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119-415: Amazonas State may refer to: Amazonas State (Brazil) Amazonas State (Venezuela) See also [ edit ] Amazonas (disambiguation) [REDACTED] Topics referred to by the same term This disambiguation page lists articles about distinct geographical locations with the same name. If an internal link led you here, you may wish to change

238-617: A complex series of orogenic events assembled the eastern parts of Gondwana (eastern Africa, Arabian-Nubian Shield, Seychelles, Madagascar, India, Sri Lanka, East Antarctica, and Australia) c. 750 to 530 Ma . First, the Arabian-Nubian Shield collided with eastern Africa (in the Kenya-Tanzania region) in the East African Orogeny c. 750 to 620 Ma . Then Australia and East Antarctica were merged with

357-585: A continuous arc chain, the direction of subduction was different between the Australian-Tasmanian and New Zealand-Antarctica arc segments. Many terranes were accreted to Eurasia during Gondwana's existence, but the Cambrian or Precambrian origin of many of these terranes remains uncertain. For example, some Palaeozoic terranes and microcontinents that now make up Central Asia, often called the "Kazakh" and "Mongolian terranes", were progressively amalgamated into

476-715: A diversified assemblage of true insects. In Gondwana, in contrast, ice and, in Australia, volcanism decimated the Devonian flora to a low-diversity seed fern flora – the pteridophytes were increasingly replaced by the gymnosperms which were to dominate until the Mid-Cretaceous. Australia, however, was still located near the Equator during the Early Carboniferous, and during this period, temnospondyl and lepospondyl amphibians and

595-472: A few million years, reached its peak at c. 200 Ma , and coincided with the Triassic–Jurassic extinction event . The reformed Gondwanan continent was not precisely the same as that which had existed before Pangaea formed; for example, most of Florida and southern Georgia and Alabama is underlain by rocks that were originally part of Gondwana, but this region stayed attached to North America when

714-562: A fishing and hunter-gatherer lifestyle. Because of Christopher Columbus' misunderstanding of the continent at which he had arrived, the native population were and are denominated "índios" by the Portuguese. Approximately two thousand Indian tribes lived in the region in the sixteenth century, perhaps amounting to some millions of people, but phenomena such as disease and assimilation to Brazilian culture caused their numbers to fall to approximately three hundred thousand, and two hundred tribes, by

833-589: A gradual decline during the Triassic while ferns, though never dominant, managed to diversify. The brief period of icehouse conditions during the Triassic–Jurassic extinction event had a dramatic impact on dinosaurs but left plants largely unaffected. The Jurassic was mostly one of hot-house conditions and, while vertebrates managed to diversify in this environment, plants have left little evidence of such development, apart from Cheiroleidiacean conifers and Caytoniales and other groups of seed ferns. In terms of biomass,

952-473: A much older supercontinent, Rodinia , to amalgamate. One of those orogenic belts, the Mozambique Belt , formed 800 to 650 Ma and was originally interpreted as the suture between East (India, Madagascar, Antarctica, and Australia) and West Gondwana (Africa and South America). Three orogenies were recognised during the 1990s as a result of data sets compiled on behalf of oil and mining companies:

1071-514: A north-east motion about 90 million years ago. While subduction direction changed, it remained oblique (and not perpendicular) to the coast of South America, and the direction change affected several subduction zone -parallel faults including Atacama , Domeyko and Liquiñe-Ofqui . Insular India began to collide with Asia circa 70 Ma , forming the Indian subcontinent , since which more than 1,400 km (870 mi) of crust has been absorbed by

1190-623: A number of species related to those of the laurissilva of Valdivia, through the connection of the Antarctic flora . These include gymnosperms and the deciduous species of Nothofagus , as well as the New Zealand laurel, Corynocarpus laevigatus , and Laurelia novae-zelandiae . New Caledonia and New Zealand became separated from Australia by continental drift 85 million years ago. The islands still retain plants that originated in Gondwana and spread to

1309-531: A pattern that reflects the Jurassic break-up of Pangaea. The Cretaceous saw the arrival of the angiosperms , or flowering plants, a group that probably evolved in western Gondwana (South America–Africa). From there the angiosperms diversified in two stages: the monocots and magnoliids evolved in the Early Cretaceous, followed by the hammamelid dicots . By the Mid-Cretaceous, angiosperms constituted half of

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1428-514: A peak in biodiversity – the end-Permian extinction was enormous and so was the radiation that followed. Two families of conifers, Podocarpaceae and Araucariaceae , dominated Gondwana in the Early Triassic, but Dicroidium , an extinct genus of fork-leaved seed ferns, dominated woodlands and forests of Gondwana during most of the Triassic. Conifers evolved and radiated during the period, with six of eight extant families already present before

1547-564: A possession marker at the upper Japurá River in 1639. Soon after that the Portuguese bandeirante António Raposo Tavares , whose bandeira , leaving the captaincy of São Vicente travelling overland, reached the Andes, and following the Amazon River, returned to Belém, visiting a total of about 12,000 kilometres (7,500 mi), between 1648 and 1651. Tropical jungle is hostile and impenetrable as well as European settlements were exclusively along

1666-808: A series of events severally restricted the Proto-ACC: change to shallow marine conditions along the North Scotia Ridge; closure of the Fuegan Seaway, the deep sea that existed in Tierra del Fuego; and uplift of the Patagonian Cordillera. This, together with the reactivated Iceland plume , contributed to global warming. During the Miocene, the Drake Passage began to widen, and as water flow between South America and

1785-681: A single jaw from Australia. The closure of the Rheic Ocean and the formation of Pangaea in the Carboniferous resulted in the rerouting of ocean currents that initiated an Ice House period. As Gondwana began to rotate clockwise, Australia shifted south to more temperate latitudes. An ice cap initially covered most of southern Africa and South America but spread to eventually cover most of the supercontinent, save for northernmost Africa-South America and eastern Australia. Giant lycopod and horsetail forests continued to evolve in tropical Laurasia together with

1904-504: Is tropical jungle ; cities are clustered along navigable waterways and are accessible only by boat or plane. The capital and largest city is Manaus , a modern city of 2.1 million inhabitants in the middle of the jungle on the Amazon River, 1,500 km upstream from the Atlantic Ocean . Nearly half the state's population lives in the city; the other large cities, Parintins , Manacapuru , Itacoatiara , Tefé , and Coari are also along

2023-579: Is a populated place today, San Pablo, now the municipality of São Paulo de Olivença . Starting about 1580, without effective occupation, English, Dutch, French (and even some Irish) searching for so-called Drogas do Sertão (spices of the backlands ) had established some outposts upstream of the mouth of the Amazon. From at least the time of the Tordesillas Treaty in 1494 until the Treaty of Madrid in 1750,

2142-675: Is named after the Amazon River , and was formerly part of the Spanish Empire 's Viceroyalty of Peru , a region called Spanish Guyana . It was settled by the Portuguese moving northwest from Brazil in the early 18th century and incorporated into the Portuguese empire after the Treaty of Madrid in 1750. It became a state under the First Brazilian Republic in 1889. Most of the state

2261-771: Is now the Transantarctic Mountains ): the Antarctic Peninsula , Marie Byrd Land , Zealandia , and Thurston Island ; the Falkland Islands and Ellsworth–Whitmore Mountains (in Antarctica) were rotated 90° in opposite directions; and South America south of the Gastre Fault (often referred to as Patagonia ) was pushed westward. The history of the Africa-Antarctica break-up can be studied in great detail in

2380-566: Is now the southern Weddell Sea where initial break-up occurred during the Jurassic c. 180 to 160 Ma . Gondwana began to break up in the early Jurassic following the extensive and fast emplacement of the Karoo-Ferrar flood basalts c. 184 Ma . Before the Karoo plume initiated rifting between Africa and Antarctica , it separated a series of smaller continental blocks from Gondwana's southern, Proto-Pacific margin (along what

2499-410: Is one of the oldest in the Amazon, originating in a Mercedarian Indian mission founded in 1663. By the early 18th century, they were destroyed by the Portuguese, depopulated by smallpox, or their indigenous residents taken away as slaves by Portuguese Bandeirantes. A few were taken over by Portuguese Carmelites. The destruction of the missions was the end of Spanish claims in western Amazonia. Only one

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2618-537: Is presumed to have been linked to the subduction of cold oceanic lithosphere . During the mid to Late Cretaceous ( c.  90 million years ago ), the Andean orogeny changed significantly in character. Warmer and younger oceanic lithosphere is believed to have started to be subducted beneath South America around this time. Such kind of subduction is held responsible not only for the intense contractional deformation that different lithologies were subject to, but also

2737-612: The Andes Mountains and explored the course of the river to the Atlantic Ocean. The indigenous people called this river the Conoris . The myth of women warriors on the river has spread in the accounts and books, without any popular scope, still making those regions to receive names of warriors of Greek mythology, the Amazons — among them the largest river in the region that became known as

2856-755: The Antarctic Peninsula increased, the renewed ACC resulted in cooler global climate. Since the Eocene, the northward movement of the Australian Plate has resulted in an arc-continent collision with the Philippine and Caroline plates and the uplift of the New Guinea Highlands . From the Oligocene to the late Miocene, the climate in Australia, dominated by warm and humid rainforests before this collision, began to alternate between open forest and rainforest before

2975-850: The Antongil Block in far eastern Madagascar, the Seychelles , and the Napier and Rayner Complexes in East Antarctica ). The Azania continent (much of central Madagascar , the Horn of Africa and parts of Yemen and Arabia) was an island in the Mozambique Ocean. The continent Australia/ Mawson was still separated from India, eastern Africa, and Kalahari by c. 600 Ma , when most of western Gondwana had already been amalgamated. By c. 550 Ma, India had reached its Gondwanan position, which initiated

3094-1006: The Australian Plate are now separated by the Capricorn Plate and its diffuse boundaries. During the opening of the Indian Ocean, the Kerguelen hotspot first formed the Kerguelen Plateau on the Antarctic Plate c. 118 to 95 Ma and then the Ninety East Ridge on the Indian Plate at c. 100 Ma . The Kerguelen Plateau and the Broken Ridge , the southern end of the Ninety East Ridge, are now separated by

3213-827: The Campbell Plateau , Chatham Rise , Lord Howe Rise , Norfolk Ridge , and New Caledonia , from West Antarctica c. 84 Ma . The opening of the South Atlantic Ocean divided West Gondwana (South America and Africa), but there is considerable debate over the exact timing of this break-up. Rifting propagated from south to north along Triassic–Early Jurassic lineaments, but intra-continental rifts also began to develop within both continents in Jurassic–Cretaceous sedimentary basins, subdividing each continent into three sub-plates. Rifting began c. 190 Ma at Falkland latitudes, forcing Patagonia to move relative to

3332-590: The Central Atlantic opened . Antarctica, the centre of the supercontinent, shared boundaries with all other Gondwana continents and the fragmentation of Gondwana propagated clockwise around it. The break-up was the result of the eruption of the Karoo-Ferrar igneous province , one of the Earth's most extensive large igneous provinces (LIP) c. 200 to 170 Ma , but the oldest magnetic anomalies between South America, Africa, and Antarctica are found in what

3451-795: The Drake Passage and the deepening of the Tasman Gateway. The oldest oceanic crust in the Drake Passage, however, is 34 to 29 Ma -old which indicates that the spreading between the Antarctic and South American plates began near the Eocene/Oligocene boundary. Deep sea environments in Tierra del Fuego and the North Scotia Ridge during the Eocene and Oligocene indicate a "Proto-ACC" opened during this period. Later, 26 to 14 Ma ,

3570-575: The East African Orogeny ( 650 to 800 Ma ) and Kuunga orogeny (including the Malagasy Orogeny in southern Madagascar) ( 550 Ma ), the collision between East Gondwana and East Africa in two steps, and the Brasiliano orogeny ( 660 to 530 Ma ), the successive collision between South American and African cratons . The last stages of Gondwanan assembly overlapped with

3689-551: The East African Orogeny , the collision of India and Madagascar with East Africa, and culminating in c.   600 to 530 Ma with the overlapping Brasiliano and Kuunga orogenies, the collision of South America with Africa, and the addition of Australia and Antarctica, respectively. Eventually, Gondwana became the largest piece of continental crust of the Palaeozoic Era, covering an area of some 100,000,000 km (39,000,000 sq mi), about one-fifth of

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3808-720: The Great American Interchange . The break-up of Gondwana can be said to continue in eastern Africa at the Afar Triple Junction , which separates the Arabian , Nubian , and Somali plates, resulting in rifting in the Red Sea and East African Rift . In the Early Cenozoic , Australia was still connected to Antarctica c. 35–40° south of its current location and both continents were largely unglaciated. A rift between

3927-765: The Himalayan - Tibetan orogen. During the Cenozoic, the orogen resulted in the construction of the Tibetan Plateau between the Tethyan Himalayas in the south and the Kunlun and Qilian mountains in the north. Later, South America was connected to North America via the Isthmus of Panama , cutting off a circulation of warm water and thereby making the Arctic colder, as well as allowing

4046-407: The Javari and the Carmelite aldeia of São Pedro; the other at the western mouth of the great river Japurá. This was the beginning of what came to be called the Jesuit–Carmelite War . Antidote to settlement was disease: fierce smallpox epidemics in 1661, 1695, 1724, and 1743/49 left the region nearly depopulated. A Carmelite Friar had notable success with the method of variolation in 1729, but

4165-481: The Ordovician . This is the Cuyania or Precordillera terrane of the Famatinian orogeny in northwest Argentina which may have continued the line of the Appalachians southwards. Chilenia terrane accreted later against Cuyania. The collision of the Patagonian terrane with the southwestern Gondwanan occurred in the late Paleozoic. Subduction-related igneous rocks from beneath the North Patagonian Massif have been dated at 320–330 million years old, indicating that

4284-456: The Paleogene (from around 66 to 23 million years ago (Ma)). Gondwana was not considered a supercontinent by the earliest definition, since the landmasses of Baltica , Laurentia , and Siberia were separated from it. To differentiate it from the Indian region of the same name (see § Name ), it is also commonly called Gondwanaland . Regions that were part of Gondwana shared floral and zoological elements that persist to

4403-481: The Pangaea supercontinent during the Carboniferous. Pangaea began to break up in the Mid-Jurassic when the Central Atlantic opened . In the western end of Pangaea, the collision between Gondwana and Laurasia closed the Rheic and Palaeo-Tethys oceans. The obliquity of this closure resulted in the docking of some northern terranes in the Marathon , Ouachita , Alleghanian , and Variscan orogenies, respectively. Southern terranes, such as Chortis and Oaxaca , on

4522-412: The Portuguese Empire by the First Treaty of San Ildefonso . The State also includes territory from failed attempts at colonization by the European powers, such as England and the Dutch empire. The first Spanish expedition was by Francisco de Orellana in conjunction with Catholic priest Gaspar de Carvajal , who documented the expedition. He reported a conflict against indigenous women which led to

4641-409: The Province of Amazonas was officially created by Emperor Pedro II in 1850. From the mid-19th century, the territory began to receive migrants from the northeast seeking a better life. Attracted by the rubber boom, they settled in important Amazonian cities such as Manaus, Tabatinga, Parintins, Itacoatiara and Barcelos, the first capital of Amazonas. The state had an era of splendor in the 1890s, at

4760-499: The Southeast Indian Ridge . Separation between Australia and East Antarctica began c. 132 Ma with seafloor spreading occurring c. 96 Ma . A shallow seaway developed over the South Tasman Rise during the Early Cenozoic and as oceanic crust started to separate the continents during the Eocene c. 35.5 Ma global ocean temperature dropped significantly. A dramatic shift from arc- to rift magmatism c. 100 Ma separated Zealandia , including New Zealand ,

4879-442: The Uralian orogeny and Laurasia . Pangaea was finally amalgamated in the Late Carboniferous-Early Permian, but the oblique forces continued until Pangaea began to rift in the Triassic. In the eastern end, collisions occurred slightly later. The North China , South China , and Indochina blocks rifted from Gondwana during the middle Paleozoic and opened the Proto-Tethys Ocean . North China docked with Mongolia and Siberia during

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4998-422: The Variscan orogeny close to the Carboniferous–Permian boundary. South-east Asia was made of Gondwanan and Cathaysian continental fragments that were assembled during the Mid-Palaeozoic and Cenozoic. This process can be divided into three phases of rifting along Gondwana's northern margin: first, in the Devonian, North and South China , together with Tarim and Quidam (north-western China) rifted, opening

5117-403: The uplift and erosion known to have occurred from the Late Cretaceous onward. Plate tectonic reorganisation since the mid-Cretaceous might also have been linked to the opening of the South Atlantic Ocean . Another change related to mid-Cretaceous plate tectonic rearrangement was the change of subduction direction of the oceanic lithosphere that went from having south-east motion to having

5236-433: The Amazon River flowed westward, perhaps as part of a proto-Congo (Zaïre) river system from the interior of present-day Africa when the continents were joined as part of western Gondwana . Fifteen million years ago, the Andes were formed by the collision of the South American Plate with the Nazca Plate (eastern Pacific oceanic) plate. The rise of the Andes and the linkage of the Brazilian and Guyana bedrock shields, blocked

5355-782: The Amazon River in the eastern half of the state. The name was originally given to the Amazon River that runs through the state by the Spaniard Francisco de Orellana in 1541. Claiming to have come across a warlike tribe of Natives, with whom he fought, he likened them to the Amazons of Greek mythology , giving them the same name of Río de las Amazonas . 1616 Captaincy of Maranhão begins westward expansion 1751 Maranhão reconstituted as state of Grão-Pará e Maranhão 1755 Captaincy of Rio Negro split off 1757 Captaincy of Rio Negro rejoined 1772 Grão-Pará e Rio Negro split from Grão-Pará e Maranhão. 1775 Captaincy of Grão-Pará of state of Brazil. 1821 Province of Pará 1822 Pará province of independent Brazil. 1832 Creation of Judicial District of

5474-551: The Amazon River. Early publications, as was the style of the day, called the river after its European explorer, the Orellana . Also in the 16th century, there were the expeditions of conquistadores Pedro de Ursúa and Lope de Aguirre in search of the legendary El Dorado , the Lost City of Gold (1559–1561) Spanish Jesuit missions were the first settlements upstream on the Amazon. As many as 30 missions were founded in Amazon territory, seven in Brazil, between 1638 and 1727. The municipality of Silves on an island of Lake Saracá

5593-414: The Amazonas State, being the center of important artistic and cultural events. Bloomed so trade in luxury products and superfluous, with men and women from all over the world parading its streets and avenues, at purchase of the so-called "black gold" , as was dubbed the natural rubber, to resell big profits in the main capitals of Europe and in the United States from 1910, difficult times began, due to

5712-502: The Brazilian Amazon) was an economic development project implemented by Act number 3 173 of 3 June 1957, that reframed, enlarged and established tax incentives for deployment of an industrial, commercial and agricultural pole in a physical area of 10 000 km , with headquarters in the city of Manaus. Despite the adoption in 1957, that project has only been in fact deployed, by Decree-Law number 288 of 28 February 1967. Gondwana Gondwana ( / ɡ ɒ n d ˈ w ɑː n ə / )

5831-502: The Carboniferous–Permian, followed by South China. The Cimmerian blocks then rifted from Gondwana to form the Palaeo-Thethys and Neo-Tethys oceans in the Late Carboniferous, and docked with Asia during the Triassic and Jurassic. Western Pangaea began to rift while the eastern end was still being assembled. The formation of Pangaea and its mountains had a tremendous impact on global climate and sea levels, which resulted in glaciations and continent-wide sedimentation. In North America,

5950-405: The Early Cretaceous, and West Burma and Woyla during the Late Cretaceous. Gondwana's long, northern margin remained a mostly passive margin throughout the Palaeozoic. The Early Permian opening of the Neo-Tethys Ocean along this margin produced a long series of terranes, many of which were and still are being deformed in the Himalaya Orogeny . These terranes are, from Turkey to north-eastern India:

6069-403: The Earth's surface. It fused with Euramerica during the Carboniferous to form Pangea . It began to separate from northern Pangea ( Laurasia ) during the Triassic , and started to fragment during the Early Jurassic (around 180 million years ago). The final stages of break-up, involving the separation of Antarctica from South America (forming the Drake Passage ) and Australia, occurred during

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6188-448: The Equator during this period and remained a lifeless and barren landscape. West Gondwana drifted north during the Devonian , bringing Gondwana and Laurasia close together. Global cooling contributed to the Late Devonian extinction (19% of marine families and 50% of genera went extinct) and glaciation occurred in South America. Before Pangaea had formed, terrestrial plants, such as pteridophytes , began to diversify rapidly resulting in

6307-400: The Equator on landmasses then limited to Laurasia and, in Gondwana, to Australia. In the late Silurian, two distinctive lineages, zosterophylls and rhyniophytes , had colonised the tropics. The former evolved into the lycopods that were to dominate the Gondwanan vegetation over a long period, whilst the latter evolved into horsetails and gymnosperms . Most of Gondwana was located far from

6426-436: The Jesuits, Carmelites, Capuchines and Franciscans: the Jesuits restricted their activities to the south bank of the Amazon upstream to the mouth of the Madeira; the north shore of the Amazon as far as the Trombetas fell to the Franciscans, to the mouth of the Rio Negro to the Mercedarians, and the Negro itself and the Solimoes to the Carmelites. The Portuguese Carmelites got a later start than the Spanish Jesuits, but their impact

6545-446: The Jurassic flora was dominated by conifer families and other gymnosperms that had evolved during the Triassic. The Pteridophytes that had dominated during the Palaeozoic were now marginalised, except for ferns. In contrast to Laurentia, very few insect fossils have been found in Gondwana, to a considerable extent because of widespread deserts and volcanism. While plants had a cosmopolitan distribution, dinosaurs evolved and diversified in

6664-406: The Kuunga orogeny (also known as the Pinjarra orogeny). Meanwhile, on the other side of the newly forming Africa, Kalahari collided with Congo and Rio de la Plata which closed the Adamastor Ocean . c. 540–530 Ma, the closure of the Mozambique Ocean brought India next to Australia–East Antarctica, and both North and South China were in proximity to Australia. As the rest of Gondwana formed,

6783-422: The Late Permian, many known from South Africa and Australia. Beetles and cockroaches remained minor elements in this fauna. Tetrapod fossils from the Early Permian have only been found in Laurasia but they became common in Gondwana later during the Permian. The arrival of the therapsids resulted in the first plant-vertebrate-insect ecosystem. During the Mid- to Late Triassic, hot-house conditions coincided with

6902-405: The Miocene, a warm and humid climate developed with pockets of rainforests in central Australia, but before the end of the period, colder and drier climate severely reduced this rainforest. A brief period of increased rainfall in the Pliocene was followed by drier climate which favoured grassland. Since then, the fluctuation between wet interglacial periods and dry glacial periods has developed into

7021-408: The Negro was that known as Santo Elias dos Tarumas (originally aldeia of Nossa Senhora da Conceição, and later called Airão), dating from 1692. the capital Manaus, was founded in 1669 as the Fort of São José do Rio Negro (later called Lugar da Barra do Rio Negro or "place on the shore of Rio Negro") on the confluence of the Rio Negro and Solimões Rivers. The Royal Charter of 1693 divided Amazonia among

7140-443: The Neoproterozoic to Palaeozoic phase of the Terra Australis Orogen , a series of terranes were rafted from the proto-Andean margin when the Iapteus Ocean opened, to be added back to Gondwana during the closure of that ocean. During the Paleozoic, some blocks which helped to form parts of the Southern Cone of South America, include a piece transferred from Laurentia when the west edge of Gondwana scraped against southeast Laurentia in

7259-441: The Palaeo-Tethys behind them. These terranes accreted to Asia during Late Devonian and Permian. Second, in the Late Carboniferous to Early Permian, Cimmerian terranes opened Meso-Tethys Ocean; Sibumasu and Qiangtang were added to south-east Asia during Late Permian and Early Jurassic. Third, in the Late Triassic to Late Jurassic, Lhasa , West Burma , Woyla terranes opened the Neo-Tethys Ocean; Lhasa collided with Asia during

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7378-456: The South Atlantic (Brazil and Cameroon ) dating to around 120  million years ago , suggesting that some form of land connection still existed between Africa and South America as recently as the early Aptian . The first phases of Andean orogeny in the Jurassic and Early Cretaceous were characterised by extensional tectonics , rifting , the development of back-arc basins and the emplacement of large batholiths . This development

7497-465: The Southern Hemisphere, has a "Gondwanan distribution" and is often described as an archaic, or relict , lineage. The distributions in the Proteaceae is, nevertheless, the result of both Gondwanan rafting and later oceanic dispersal. During the Silurian, Gondwana extended from the Equator (Australia) to the South Pole (North Africa and South America) whilst Laurasia was located on the Equator opposite to Australia. A short-lived Late Ordovician glaciation

7616-448: The Spanish and Portuguese possessions, the Viceroyalty of Peru (and successor states) and Grão-Pará region of Brazil, was set between 1781 and 1791 by negotiation. In 1821, Grão-Pará and Rio Negro provinces became the unified Grão-Pará . The following year, Brazil proclaimed its independence and Grão-Pará became the Province of Pará of state of Brazil. When Emperor Pedro I declared independence from Portugal, in 1822, he had to fight also

7735-408: The Taurides in southern Turkey; the Lesser Caucasus Terrane in Georgia; the Sanand, Alborz, and Lut terranes in Iran; the Mangysglak or Kopetdag Terrane in the Caspian Sea; the Afghan Terrane; the Karakorum Terrane in northern Pakistan; and the Lhasa and Qiangtang terranes in Tibet. The Permian–Triassic widening of the Neo-Tethys pushed all these terranes across the Equator and over to Eurasia. During

7854-403: The Upper Amazonas, under Pará. 1850 Province of Amazonas split from Pará 1889 State of Amazonas Capital 1755 village of São José do Javari; it became the vila Maryua 1758, Maryua is elevated to a town and called Barcelos 1788–1799, capital moved to Barra do Rio Negro; 1799–1808 The capital was again in Barcelos 1808 Barra do Rio Negro the capital, renamed Manaus in 1832 At one time

7973-430: The area of the confluence of the Rio Negro and Amazon Rivers, in upper Amazonia. While the Treaty of Madrid in 1750 implicitly recognized the principle of uti possiditis , it did not actually specify the northern borders of the country. At that time, the border of contention between Spanish and Portuguese domains was in the upper Solimões, at the junction of the Rio Negro. In the upper Salomoes, Spanish missionary influence

8092-413: The autonomy of the Amazonas region as a separate province of Pará. The rebellion was suppressed, but the Amazons were able to send a representative to the Imperial Court, Friar José dos Santos Inocentes , who got up the creation of the District of the Upper Amazon. During Cabanagem in 1835–40, the Amazon remained loyal to the imperial government and not joined the revolt. As a sort of reward for loyalty,

8211-550: The base of the Absaroka sequence coincides with the Alleghanian and Ouachita orogenies and are indicative of a large-scale change in the mode of deposition far away from the Pangaean orogenies. Ultimately, these changes contributed to the Permian–Triassic extinction event and left large deposits of hydrocarbons, coal, evaporite, and metals. The breakup of Pangaea began with the Central Atlantic magmatic province (CAMP) between South America, Africa, North America, and Europe. CAMP covered more than seven million square kilometres over

8330-414: The colonisation of Gondwana. The Baragwanathia Flora, found only in the Yea Beds of Victoria, Australia, occurs in two strata separated by 1,700 m (5,600 ft) or 30 Ma; the upper assemblage is more diverse and includes Baragwanathia, the first primitive herbaceous lycopod to evolve from the zosterophylls. During the Devonian, giant club mosses replaced the Baragwanathia Flora, introducing

8449-492: The continent Kazakhstania in the late Silurian . Whether these blocks originated on the shores of Gondwana is not known. In the Early Palaeozoic, the Armorican terrane , which today form large parts of France, was part of either Peri-Gondwana or core Gondwana; the Rheic Ocean closed in front of it and the Palaeo-Tethys Ocean opened behind it. Precambrian rocks from the Iberian Peninsula suggest that it, too, formed part of core Gondwana before its detachment as an orocline in

8568-424: The continent became the arid or semiarid landscape it is today. The adjective "Gondwanan" is in common use in biogeography when referring to patterns of distribution of living organisms, typically when the organisms are restricted to two or more of the now-discontinuous regions that were once part of Gondwana, including the Antarctic flora . For example, the plant family Proteaceae , known from all continents in

8687-613: The current name of the river, and then to the current name of the region and the state (Amazonas in English: Amazons ). The second Spanish expedition was by Pedro de Ursúa , intending to prove the previous expedition, but resulted in the Spanish Kingdom dropping the attempt to colonize the region. After the unification of the Iberian kingdoms, Portugal launched an expedition on the river [but in reverse from Francisco de Orellana, at

8806-800: The development of rifts systems on both continents, including the Central African Rift System and the Central African Shear Zone which lasted until c. 85 Ma . At Brazilian latitudes spreading is more difficult to assess because of the lack of palaeo-magnetic data, but rifting occurred in Nigeria at the Benue Trough c. 118 Ma . North of the Equator the rifting began after 120.4 Ma and continued until c. 100 to 96 Ma . Dinosaur footprints representing identical species assemblages are known from opposite sides of

8925-532: The emergence of Colombia , Ecuador , Venezuela and Panama . Brazil signed the Treaty Vásquez Cobo–Martins (1908) (with those countries) finally entitling those possessions in the north to Brazil. One region is marked by the geodesic line Apóporis-Tabatinga; and the other is the municipal area of São Gabriel da Cachoeira , on the Brazil-Colombia border . By the Treaty of Tordesillas (1494),

9044-544: The end of it. Bennettitales and Pentoxylales , two now extinct orders of gymnospermous plants, evolved in the Late Triassic and became important in the Jurassic and Cretaceous. It is possible that gymnosperm biodiversity surpassed later angiosperm biodiversity and that the evolution of angiosperms began during the Triassic but, if so, in Laurasia rather than in Gondwana. Two Gondwanan classes, lycophytes and sphenophytes , saw

9163-460: The end of the twentieth century. Certain uncontacted tribes still exist in the region. In the colonial time, the territory which today belongs to the State of Amazonas, was a combination of treaties, expeditions, evangelism and military occupations. Scarce but recorded claims and indigenous uprisings in the region, were initially made by the Spanish Empire through the Treaty of Tordesillas and after

9282-916: The eruption of the Deccan basalts , whose eruption site may survive as the Réunion hotspot . The Seychelles and the Maldives are now separated by the Central Indian Ridge . During the initial break-up in the Early Jurassic a marine transgression swept over the Horn of Africa covering Triassic planation surfaces with sandstone , limestone , shale , marls and evaporites . East Gondwana, comprising Antarctica, Madagascar, India, and Australia, began to separate from Africa. East Gondwana then began to break up c. 132.5 to 96 Ma when India moved northwest from Australia-Antarctica. The Indian Plate and

9401-550: The evolution of Voltziales , one of the few plant orders to survive the end-Permian extinction (57% of marine families and 83% of genera went extinct) and which came to dominate in the Late Permian and from whom true conifers evolved. Tall lycopods and horsetails dominated the wetlands of Gondwana in the Early Permian. Insects co-evolved with glossopterids across Gondwana and diversified with more than 200 species in 21 orders by

9520-554: The first amniote reptilians evolved, all closely related to the Laurasian fauna, but spreading ice eventually drove these animals away from Gondwana entirely. The Gondwana ice sheet melted, and sea levels dropped during the Permian and Triassic global warming. During this period, the extinct glossopterids colonised Gondwana and reached peak diversity in the Late Permian when coal-forming forests covered much of Gondwana. The period also saw

9639-510: The first trees, and by the Late Devonian this first forest was accompanied by the progymnosperms , including the first large trees Archaeopteris . The Late Devonian extinction probably also resulted in osteolepiform fishes evolving into the amphibian tetrapods , the earliest land vertebrates, in Greenland and Russia. The only traces of this evolution in Gondwana are amphibian footprints and

9758-518: The flora in northeastern Australia. There is, however, no obvious connection between this spectacular angiosperm radiation and any known extinction event nor with vertebrate/insect evolution. Insect orders associated with pollination, such as beetles , flies , butterflies and moths , and wasps, bees, and ants , radiated continuously from the Permian-Triassic, long before the arrival of the angiosperms. Well-preserved insect fossils have been found in

9877-618: The fracture zones and magnetic anomalies flanking the Southwest Indian Ridge . The Madagascar block and the Mascarene Plateau , stretching from the Seychelles to Réunion , were broken off India, causing Madagascar and Insular India to be separate landmasses : elements of this break-up nearly coincide with the Cretaceous–Paleogene extinction event . The India–Madagascar–Seychelles separations appear to coincide with

9996-609: The frontier of the northernmost captaincy of Maranhão with the expulsion of the French from São Luis in 1615, and the founding of Belém at the mouth of the Amazon in 1616. Exploration and colonization thence followed the waterway upstream. There are accounts of Portuguese Carmelite missionaries active in the Solimões area, upstream of the Rio Negro, as early as the 1620s, but permanent settlements weren't established for another 80 years, so

10115-463: The ice ages ended, the forest was again joined, and the species that were once one, had diverged significantly enough to be designated as separate species, adding to the tremendous diversity of the region. About 6,000 years ago, sea levels rose about 130 meters, once again causing the river to be inundated like a long, giant freshwater lake. The pre-Columbian Amazonas was inhabited by seminomadic peoples whose livelihood mixed occasional agriculture with

10234-498: The island of Aibi near the mouth of Lake Arauató , followed by São Gabriel , founded in 1668 as by Franciscan Friar Teodózio [or Teodósio] da Veiga and Captain Pedro da Costa Favela on the Rio Negro, near the mouth of the Rio Aruím . In 1761, a fort was built on the location, and the settlement became the town of São Gabriel da Cachoeira . The first missionary aldea of the Portuguese in

10353-833: The lake deposits of the Santana Formation in Brazil, the Koonwarra Lake fauna in Australia, and the Orapa diamond mine in Botswana. Dinosaurs continued to prosper but, as the angiosperm diversified, conifers, bennettitaleans and pentoxylaleans disappeared from Gondwana c. 115 Ma together with the specialised herbivorous ornithischians , whilst generalist browsers, such as several families of sauropodomorph Saurischia , prevailed. The Cretaceous–Paleogene extinction event killed off all dinosaurs except birds, but plant evolution in Gondwana

10472-438: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Amazonas_State&oldid=1212833196 " Categories : Place name disambiguation pages State name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Amazonas State (Brazil) Amazonas

10591-635: The mouth of the river to the site of the present-day city of Quito , capital of Ecuador ], with the intention of attaching Spanish lands (comprising the current territory of the Brazilian Amazon ) to the Portuguese Kingdom . After the dissolution of the Iberian Union , Portuguese and Spanish possessions in the region were undefined, resulting in internal conflicts in the region between Portugal and Spain . The Portuguese Crown later asserted

10710-676: The opening of the Iapetus Ocean between Laurentia and western Gondwana. During this interval, the Cambrian explosion occurred. Laurentia was docked against the western shores of a united Gondwana for a brief period near the Precambrian/Cambrian boundary, forming the short-lived and still disputed supercontinent Pannotia . The Mozambique Ocean separated the Congo – Tanzania – Bangweulu Block of central Africa from Neoproterozoic India (India,

10829-587: The other hand, remained largely unaffected by the collision along the southern shores of Laurentia. Some Peri-Gondwanan terranes, such as Yucatán and Florida , were buffered from collisions by major promontories. Other terranes, such as Carolina and Meguma , were directly involved in the collision. The final collision resulted in the Variscan- Appalachian Mountains , stretching from present-day Mexico to southern Europe. Meanwhile, Baltica collided with Siberia and Kazakhstania which resulted in

10948-450: The peak of the rubber boom. However, the economic gains were largely the result of great human suffering: untold thousands of enslaved Amerindian seringueiros (rubber tappers) died through disease and overwork. Manaus, which already boasted as the capital administrative of the State, experienced a great population growth and the economic advancement, resulting mainly from exports of raw materials until then exclusively from Amazon Region. With

11067-542: The present arid regime. Australia has thus experienced various climate changes over a 15-million-year period with a gradual decrease in precipitation. The Tasman Gateway between Australia and Antarctica began to open c. 40 to 30 Ma . Palaeontological evidence indicates the Antarctic Circumpolar Current (ACC) was established in the Late Oligocene c. 23 Ma with the full opening of

11186-521: The present day. The continent of Gondwana was named by the Austrian scientist Eduard Suess , after the region in central India of the same name , which is derived from Sanskrit for "forest of the Gonds ". The name had been previously used in a geological context, first by H. B. Medlicott in 1872, from which the Gondwana sedimentary sequences ( Permian - Triassic ) are also described. Some scientists prefer

11305-437: The principle of uti possidetis , with respect to the region. This was the first assertion of the principle from Roman law of uti possidetis, ita possideatis , (Latin, "who has possession, has dominion"), analogous to English common law "Squatters rights" . Due account may have been taken of John Locke's labour theory of property. Conflicting issues arose between what was granted by law in the Treaty of Tordesillas (1494), and

11424-564: The provinces of Grão-Pará and Maranhão. In 1823, a ship commanded by British officer John Pascoe Grenfell arrived at the port of Belém , to combat rebels. Only in August 1824 did the new governor swear loyalty to the Brazilian Emperor. The Province of Pará , including the comarca of Rio Negro, the upper Amazon region, was incorporated into the Empire of Brazil in 1824. A revolt in 1832 demanded

11543-473: The records are nebulous. The first documented Portuguese foray into upper Amazonia was the expedition of Portuguese explorer and military officer Pedro Teixeira , who followed the great river from the Atlantic Ocean to Quito, Ecuador with 70 soldiers and 1,200 Indians in forty-seven great canoes (1637–1639). He returned by the same route, arriving back in Belem in 1639. According to the Portuguese, Pedro Teixeira placed

11662-643: The region of the upper Amazon was part of the Spanish Viceroyalty of Peru ( Viceroyalty of New Granada after 1717). Everything north of the Amazon (Solimões) and west of the Nhamundá River (Yamundá, in Spanish), an affluent of the left bank of the Amazon that forms the boundary of Amazonas with Pará, was known as Spanish Guyana. Portuguese expansion westward and northward of the Torsedillas Line began from

11781-746: The remaining Gondwana c. 570 to 530 Ma in the Kuunga Orogeny. The later Malagasy orogeny at about 550–515 Mya affected Madagascar, eastern East Africa and southern India. In it, Neoproterozoic India collided with the already combined Azania and Congo–Tanzania–Bangweulu Block, suturing along the Mozambique Belt. The 18,000 km-long (11,000 mi) Terra Australis Orogen developed along Gondwana's western, southern, and eastern margins. Proto-Gondwanan Cambrian arc belts from this margin have been found in eastern Australia, Tasmania, New Zealand, and Antarctica. Though these belts formed

11900-467: The river and caused the Amazon to become a vast inland sea. Gradually this inland sea became a massive swampy, freshwater lake and the marine inhabitants adapted to life in freshwater. For example, over 20 species of stingray, most closely related to those found in the Pacific Ocean, can be found today in the fresh waters of the Amazon. About ten million years ago, waters worked through the sandstone to

12019-648: The still static remainder of South America and Africa, and this westward movement lasted until the Early Cretaceous 126.7 Ma . From there rifting propagated northward during the Late Jurassic c. 150 Ma or Early Cretaceous c. 140 Ma most likely forcing dextral movements between sub-plates on either side. South of the Walvis Ridge and Rio Grande Rise the Paraná and Etendeka magmatics resulted in further ocean-floor spreading c. 130 to 135 Ma and

12138-751: The strong competition of natural rubber planted in rubber plantations the Asian continent, to European and American markets with superior advantages, which ultimately enact bankruptcy of Amazonian economy. By the late 19th century, the Brazilian rubber monopoly was slowly dying, as British and Dutch plantations in South-East Asia were producing cheaper, superior quality rubber, and by 1900 the Amazonas state had fallen into serious economic decline. Free trade zone of Manaus (also called Manaus Industrial Pole or Industrial Pole of

12257-399: The subduction process initiated in the early Carboniferous. This was relatively short-lived (lasting about 20 million years), and initial contact of the two landmasses occurred in the mid-Carboniferous, with broader collision during the early Permian. In the Devonian, an island arc named Chaitenia accreted to Patagonia in what is now south-central Chile. Gondwana and Laurasia formed

12376-562: The subsequent reality of colonial expansion: the Spanish, eastward from the Pacific coastal plains (though restrained by the Andes ), and the Portuguese, westward (aided by the waterways and lowlands of the mighty Amazon). The Treaty of Madrid (13 January 1750) – that determined the border between the Spanish possessions and southern Portuguese Brazil – had first enunciated the principle that new states, at

12495-475: The technique was not propagated. The Jenner cowpox vaccine was not introduced in Brazil until 1808. Variolation was prohibited in 1840, and vaccination was mandated in 1854. But epidemics got worse until finally petering out around the turn of the century. Within the project of occupying the Amazon hinterland, was formed the royal captaincy of São José do Rio Negro subordinate to Para, in Mar. 1755, with headquarters in

12614-512: The term "Gondwanaland" for the supercontinent to make a clear distinction between the region and the supercontinent. The assembly of Gondwana was a protracted process during the Neoproterozoic and Paleozoic , which remains incompletely understood because of the lack of paleo-magnetic data. Several orogenies , collectively known as the Pan-African orogeny , caused the continental fragments of

12733-458: The time of their creation shall have dominion over the lands that were settled as colonies. It implicitly opened the door to claims by prior possession in the vast lands of the north. After the independence of Brazil in 1822, the current borders of the Amazonas State were still undefined – at that time being with Gran Colombia . The internal conflicts within that neighbour country resulted in

12852-613: The two developed but remained an embayment until the Eocene-Oligocene boundary when the Circumpolar Current developed and the glaciation of Antarctica began. Australia was warm and wet during the Palaeocene and dominated by rainforest. The opening of the Tasman Gateway at the Eocene-Oligocene boundary ( 33 Ma ) resulted in abrupt cooling but the Oligocene became a period of high rainfall with swamps in southeast Australia. During

12971-476: The village of Mariuá, (now Barcelos). The boundary between the Portuguese and Spanish domination of the Amazon was eventually fixed at the Rio Javari (river that rises on the border between Amazonas state, Brazil, and Loreto department, Peru) by the Treaty of Madrid in 1750. By the mid-18th century, the effective boundary between the two empires, the Spanish Viceroyalty of Peru and Portuguese Brazil, had shifted to

13090-472: The waterways. Portuguese expansion generally was east to west, and from the main channel, the Solimões, north and south along the tributaries. The character of the settlements was of three kinds: defense and occupation ( fortes ), economic ( feitorias ), and evangelical ( missões ). The first permanent Portuguese settlements in the region were Itacoatiara 176 km east of Manaus, founded in 1655 by Portuguese Jesuit Padre António Vieira as Mission of Aroaquis on

13209-463: The wealth generated by the production and export of natural rubber ( Hevea brasiliensis ), the amazonian capital received large works such as the port of Manaus, the Amazonas Opera House , Palace of Justice, Reservoir of Mocó , the first network of electric energy and public transport services as trams. Vista as a reference, your headquarters became a symbol of prosperity and civilization for

13328-566: The west and the Amazon began to flow eastward. At this time the Amazon rainforest was born. During the Ice Age, sea levels dropped and the great Amazon lake rapidly drained and became a river. Three million years later, the ocean level receded enough to expose the Central American isthmus and allow mass migration of mammal species between the Americas. The Ice Ages caused tropical rainforest around

13447-710: The whole Amazon basin was in the area of the Spanish Crown. The mouth of a great river was explored by Spanish conquistador Vicente Yáñez Pinzón , who reached it in February 1500, with his cousin Diego de Lepe . He called the river Río Santa María de la Mar Dulce (River of Saint Mary of the Sweet Sea) on account of the large freshwater estuary extending into the sea at its mouth. In 1541, Spanish conquistadores Gonzalo Pizarro and Francisco de Orellana , from Quito , Ecuador, crossed

13566-476: The world to retreat. Although debated, it is believed that much of the Amazon reverted to savanna and montane forest . Savanna divided patches of rainforest into "islands" and separated existing species for periods long enough to allow genetic differentiation. A similar rainforest retreat took place in Africa, where Delta core samples suggest that even the mighty Congo watershed was void of rainforest at this time. When

13685-490: Was a large landmass, sometimes referred to as a supercontinent . The remnants of Gondwana make up around two-thirds of today's continental area, including South America , Africa , Antarctica , Australia , Zealandia , Arabia , and the Indian Subcontinent . Gondwana was formed by the accretion of several cratons (large stable blocks of the Earth's crust), beginning c.   800 to 650 Ma with

13804-529: Was being displaced, and the Viceroy was indifferent to colonization, but Portuguese settlements were not yet established. Part of the northern boundary between Brazil and what was then British Guyana, was set by the Spanish Boundary-line Commission of Yturriaga and Solano (1757–1763). After two indecisive wars between Portuguese and Spanish colonial forces 1761–1763 and 1776–1777, the border between

13923-477: Was followed by a Silurian Hot House period. The End-Ordovician extinction , which resulted in 27% of marine invertebrate families and 57% of genera going extinct, occurred during this shift from Ice House to Hot House. By the end of the Ordovician, Cooksonia , a slender, ground-covering plant, became the first known vascular plant to establish itself on land. This first colonisation occurred exclusively around

14042-533: Was hardly affected. Gondwanatheria is an extinct group of non- therian mammals with a Gondwanan distribution (South America, Africa, Madagascar, India, Zealandia and Antarctica) during the Late Cretaceous and Palaeogene. Xenarthra and Afrotheria , two placental clades, are of Gondwanan origin and probably began to evolve separately c. 105 Ma when Africa and South America separated. The laurel forests of Australia, New Caledonia, and New Zealand have

14161-535: Was more durable. Between 1697 and 1757, they established eight missions on the Solimões and nine on the Rio Negro. In addition, there were a few Portuguese Jesuit missions in the Solimões. In 1731, Portuguese Jesuits received orders from the Governor Luiz de Vasconcellos Lobo to establish two aldeias above the mouth of the Rio Negro, one on the right bank of the Orellana Solimões , between the eastern mouth of

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