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109-522: Lake Mungo is a dry lake located in New South Wales , Australia. It is about 760 km (472 miles) due west of Sydney and 90 km (56 miles) north-east of Mildura . The lake is the central feature of Mungo National Park , and is one of seventeen lakes in the World Heritage listed Willandra Lakes Region . Many important archaeological findings have been made at the lake, most significantly

218-409: A body of water from 2 hectares (5 acres) to 8 hectares (20 acres). Pioneering animal ecologist Charles Elton regarded lakes as waterbodies of 40 hectares (99 acres) or more. The term lake is also used to describe a feature such as Lake Eyre , which is a dry basin most of the time but may become filled under seasonal conditions of heavy rainfall. In common usage, many lakes bear names ending with

327-652: A colouring agent in Africa for over 200,000 years. Women of the Himba ethnic group in Namibia use a mix of ochre and animal fat for body decoration, to achieve a reddish skin colour. The ochre mixture is also applied to their hair after braiding. Men and women of the Maasai people in Kenya and Tanzania have also used ochre in the same way. In Ancient Egypt , yellow was associated with gold, which

436-496: A comprehensive analysis of the origin of lakes and proposed what is a widely accepted classification of lakes according to their origin. This classification recognizes 11 major lake types that are divided into 76 subtypes. The 11 major lake types are: Tectonic lakes are lakes formed by the deformation and resulting lateral and vertical movements of the Earth's crust. These movements include faulting, tilting, folding, and warping. Some of

545-448: A field strength of .1 to .2×10 T. Because most of the excursions found before Lake Mungo were contained in sedimentary material, it had been suggested that the magnetic field directional anomalies were detrital or diagenetic in origin. The Lake Mungo results were due to thermoremanent magnetization , ruling out a sedimentological phenomenon. Two excursions have been recorded in sediments from Skjonghelleren on Valderøy , Norway , with

654-402: A form of organic lake. They form where a buildup of partly decomposed plant material in a wet environment leaves the vegetated surface below the water table for a sustained period of time. They are often low in nutrients and mildly acidic, with bottom waters low in dissolved oxygen. Artificial lakes or anthropogenic lakes are large waterbodies created by human activity . They can be formed by

763-538: A higher perimeter to area ratio than other lake types. These form where sediment from a tributary blocks the main river. These form where sediment from the main river blocks a tributary, usually in the form of a levee . Lakes formed by other processes responsible for floodplain basin creation. During high floods they are flushed with river water. There are four types: 1. Confluent floodplain lake, 2. Contrafluent-confluent floodplain lake, 3. Contrafluent floodplain lake, 4. Profundal floodplain lake. A solution lake

872-510: A hypolimnion; accordingly, very shallow lakes are excluded from this classification system. Based upon their thermal stratification, lakes are classified as either holomictic , with a uniform temperature and density from top to bottom at a given time of year, or meromictic , with layers of water of different temperature and density that do not intermix. The deepest layer of water in a meromictic lake does not contain any dissolved oxygen so there are no living aerobic organisms . Consequently,

981-428: A lake consists of a large area of standing water that occupies an extensive closed depression in limestone, it is also called a karst lake . Smaller solution lakes that consist of a body of standing water in a closed depression within a karst region are known as karst ponds. Limestone caves often contain pools of standing water, which are known as underground lakes . Classic examples of solution lakes are abundant in

1090-483: A large collection of ochre samples from many sites across Australia. There are many words for ochre in Australian Aboriginal languages throughout Australia, including: The Māori people of New Zealand were found to be making extensive use of mineral ochre mixed with fish oil. Ochre was the predominant colouring agent used by Maori, and was used to paint their large waka taua (war canoe). Ochre prevented

1199-470: A large number of studies agree that small ponds are much more abundant than large lakes. For example, one widely cited study estimated that Earth has 304 million lakes and ponds, and that 91% of these are 1 hectare (2.5 acres) or less in area. Despite the overwhelming abundance of ponds, almost all of Earth's lake water is found in fewer than 100 large lakes; this is because lake volume scales superlinearly with lake area. Extraterrestrial lakes exist on

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1308-534: A mobile sand dune which moves farther east every year. The most publicized findings at Lake Mungo have been Mungo Man and Mungo Woman . Mungo Woman, a partially cremated body, was discovered in 1969 by Jim Bowler from the Australian National University (ANU). Mungo Woman was only partially cremated before the remainder of her bones were crushed. The time that was taken into her burial is demonstration of an advanced ritualistic process. Mungo Man

1417-433: A more lovely and perfect ochre pigment...And know that this ochre is a common pigment, particularly when working in fresco; that with other mixtures that, as i will explain to you, it is used for flesh colours, for drapery, for coloured mountains and buildings and hair and in general for many things. In early modern Malta, red ochre paint was commonly used on public buildings. The industrial process for making ochre pigment

1526-582: A mouldable putty that hardened into handles. Earlier excavations at Le Moustier prevent conclusive identification of the archaeological culture and age, but the European Mousterian style of these tools suggests they are associated with Neanderthals during the late Middle Paleolithic , between 60,000 and 35,000 years before present. It is the earliest evidence of compound adhesive use in Europe. Pieces of ochre engraved with abstract designs have been found at

1635-489: A natural outflow and lose water solely by evaporation or underground seepage, or both. These are termed endorheic lakes. Many lakes are artificial and are constructed for hydroelectric power generation, aesthetic purposes, recreational purposes, industrial use, agricultural use, or domestic water supply . The number of lakes on Earth is undetermined because most lakes and ponds are very small and do not appear on maps or satellite imagery . Despite this uncertainty,

1744-499: A possible 4th tool dating to older than 40,000 years ago was also found. Comparing the taphonomy and usewear of experimental shell tools established the addition of shells to the tool kit of the Pleistocene Australians. In 1972, Archaeomagnetic studies were conducted on the prehistoric aboriginal fireplaces occurring along the ancient shoreline of Lake Mungo. Magnetization preserved in oven-stones and baked hearths show that

1853-502: A practice was common to the Celts of the British Isles , bog iron being particularly abundant in the midlands of Ireland . Ochre has uses other than as paint: "tribal peoples alive today . . . use either as a way to treat animal skins or else as an insect repellent, to staunch bleeding, or as protection from the sun. Ochre may have been the first medicament." Red ochre has been used as

1962-403: A result of meandering. The slow-moving river forms a sinuous shape as the outer side of bends are eroded away more rapidly than the inner side. Eventually a horseshoe bend is formed and the river cuts through the narrow neck. This new passage then forms the main passage for the river and the ends of the bend become silted up, thus forming a bow-shaped lake. Their crescent shape gives oxbow lakes

2071-522: A result of the 1959 Hebgen Lake earthquake . Most landslide lakes disappear in the first few months after formation, but a landslide dam can burst suddenly at a later stage and threaten the population downstream when the lake water drains out. In 1911, an earthquake triggered a landslide that blocked a deep valley in the Pamir Mountains region of Tajikistan , forming the Sarez Lake . The Usoi Dam at

2180-526: A series of crescent -shaped sand dunes or lunettes , up to 40m in height, that stretch for more than 33 km, where most archaeological material has been found. There are three distinct layers of sands and soil forming the Walls. The oldest is the reddish Gol Gol layer, formed between 100,000 and 120,000 years ago. The middle greyish layer is the Mungo layer, deposited between 50,000 and 25,000 years ago. The most recent

2289-452: A significant human population, as well as many varieties of Australian megafauna . During the last ice age period, the water level in the lake dropped, and it became a salt lake . This made the soil alkaline , which helped to preserve the remains left behind in the Walls. Although the lake completely dried up several thousand years ago, ground vegetation remained on the Walls, which helped to stabilise them and protect them from erosion. With

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2398-518: A specific archaeological period in the Woodlands c.  1000 –400 BC. California Native Americans such as the Tongva and Chumash were also known to use red ochre as body paint. Researchers diving into dark submerged caves on Mexico's Yucatán Peninsula have found evidence of an ambitious mining operation starting 12,000 years ago and lasting two millennia for red ochre. In Newfoundland , red ochre

2507-422: A variation in density because of thermal gradients. Stratification can also result from a density variation caused by gradients in salinity. In this case, the hypolimnion and epilimnion are separated not by a thermocline but by a halocline , which is sometimes referred to as a chemocline . Lakes are informally classified and named according to the seasonal variation in their lake level and volume. Some of

2616-513: A waxy waterproof coating on structures. The reddle was sold as a ready-made mixture to farmers and herders by travelling workers called reddlemen. In Classical antiquity , the finest red ochre came from a Greek colony on the Black Sea where the modern city of Sinop in Turkey is located. It was carefully regulated, expensive and marked by a special seal, and this colour was called sealed Sinope. Later

2725-443: Is sag ponds . Volcanic lakes are lakes that occupy either local depressions, e.g. craters and maars , or larger basins, e.g. calderas , created by volcanism . Crater lakes are formed in volcanic craters and calderas, which fill up with precipitation more rapidly than they empty via either evaporation, groundwater discharge, or a combination of both. Sometimes the latter are called caldera lakes, although often no distinction

2834-403: Is a lake occupying a basin formed by surface dissolution of bedrock. In areas underlain by soluble bedrock, its solution by precipitation and percolating water commonly produce cavities. These cavities frequently collapse to form sinkholes that form part of the local karst topography . Where groundwater lies near the grounds surface, a sinkhole will be filled water as a solution lake. If such

2943-424: Is an often naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land . Lakes lie completely on land and are separate from the ocean , although they may be connected with the ocean by rivers . Lakes, as with other bodies of water , are part of the water cycle , the processes by which water moves around

3052-462: Is dammed behind an ice shelf that is attached to the coastline. They are mostly found in Antarctica. Fluvial (or riverine) lakes are lakes produced by running water. These lakes include plunge pool lakes , fluviatile dams and meander lakes. The most common type of fluvial lake is a crescent-shaped lake called an oxbow lake due to the distinctive curved shape. They can form in river valleys as

3161-592: Is difficult to pinpoint an exact shade or hue of red that would be considered the traditional " fishing stage red". In the Bonavista Bay area one man maintained that seal oil mixed with the ochre gave the sails a purer red colour, while cod liver oil would give a "foxy" colour, browner in hue. During the Renaissance, yellow and red ochre pigments were widely used in painting panels and frescoes. The colours vary greatly from region to region, depending upon whether

3270-458: Is highlighted by the great number of powders of this color found in the containers. The powders were probably used to give a hue to cheeks or to lips. Besides these uses as make-up powders, we can also assume a ritual use of ointments and powders containing cinnabar or ochre, applied to the face and the forehead during preparation rituals of the bodies. The discovery of red paint traces on bones and skulls suggests that these practices were common among

3379-448: Is made. An example is Crater Lake in Oregon , in the caldera of Mount Mazama . The caldera was created in a massive volcanic eruption that led to the subsidence of Mount Mazama around 4860 BCE. Other volcanic lakes are created when either rivers or streams are dammed by lava flows or volcanic lahars . The basin which is now Malheur Lake , Oregon was created when a lava flow dammed

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3488-488: Is particularly intensive: it is not unusual to find a layer of the cave floor impregnated with a purplish red to a depth of eight inches. The size of these ochre deposits raises a problem not yet solved. The colouring is so intense that practically all the loose ground seems to consist of ochre. One can imagine that the Aurignacians regularly painted their bodies red, dyed their animal skins, coated their weapons, and sprinkled

3597-526: Is the Zanci layer, which is pale brown, and was laid down mostly between 25,000 and 15,000 years ago. The Mungo layer, which was deposited before the last ice age period, is the most archaeologically rich. Although the layer corresponded with a time of low rainfall and cooler weather, more rainwater ran off the western side of the Great Dividing Range during that period, keeping the lake full. It supported

3706-490: Is the traditional land of the Barkindji, Nyiampaar and Mutthi Mutthi. These original inhabitants were driven off by European squatters for their sheep farming in the 1840s, a remnant of which is the 45m woodshed, constructed from Murray pine in 1869 by Chinese labourers. The indigenous who survived the seizure of their homeland, and European-introduced diseases, were moved to a mission at Balranald . Mungo sheep station (15,700 ha.)

3815-429: Is unknown but is estimated to be at least 2 million. Finland has 168,000 lakes of 500 square metres (5,400 sq ft) in area, or larger, of which 57,000 are large (10,000 square metres (110,000 sq ft) or larger). Most lakes have at least one natural outflow in the form of a river or stream , which maintain a lake's average level by allowing the drainage of excess water. Some lakes do not have

3924-752: The Malheur River . Among all lake types, volcanic crater lakes most closely approximate a circular shape. Glacial lakes are lakes created by the direct action of glaciers and continental ice sheets. A wide variety of glacial processes create enclosed basins. As a result, there are a wide variety of different types of glacial lakes and it is often difficult to define clear-cut distinctions between different types of glacial lakes and lakes influenced by other activities. The general types of glacial lakes that have been recognized are lakes in direct contact with ice, glacially carved rock basins and depressions, morainic and outwash lakes, and glacial drift basins. Glacial lakes are

4033-540: The Proto-Indo-European root * leǵ- ('to leak, drain'). Cognates include Dutch laak ('lake, pond, ditch'), Middle Low German lāke ('water pooled in a riverbed, puddle') as in: de:Wolfslake , de:Butterlake , German Lache ('pool, puddle'), and Icelandic lækur ('slow flowing stream'). Also related are the English words leak and leach . There is considerable uncertainty about defining

4142-774: The Russian Revolution and the Spanish Civil War . Ochre also began to face growing competition from newly synthetic pigment industry. The quarries in Roussillon, Rustrel, the Mines of Bruoux closed one by one. Today, the last quarry in activity is in Gargas (Vaucluse) and belongs to the Société des Ocres de France. Ochre, both red and yellow, appear as tinctures in South African heraldry ;

4251-546: The Vaucluse department of Provence , in France. Thanks to the process invented by Astier and refined by his successors, ochre pigments from Vaucluse were exported across Europe and around the world. It was not only used for artists paints and house paints; it also became an important ingredient for the early rubber industry. Ochre from Vaucluse was an important French export until the mid-20th century, when major markets were lost due to

4360-606: The Virtual Geomagnetic Pole (VGP) of one being synchronous with Lake Mungo. This suggests that the Lake Mungo event was global, rather than a local event. Data from lake sediments of a similar age in France having near identical magnetic field lines also support Lake Mungo being a global event. However, it has been suggested that Lake Mungo's anomalous field is the result of lightning strikes. The rich archaeological heritage of

4469-591: The Western Desert , Kimberley and Arnhem Land regions, and occur in many archaeological sites. The practice of ochre painting has been prevalent among Aboriginal Australians for over 40,000 years. Pleistocene burials with red ochre date as early as 40,000 BP and ochre plays a role in expressing symbolic ideologies of the earliest arrivals to the continent. Ochre has been used for millennia by Aboriginal people for body decoration, sun protection , mortuary practices, cave painting, bark painting and other artwork, and

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4578-402: The axial dipole field moved up to 120 degrees from its normal position around 30,000 years ago. Called a geomagnetic excursion , the event occurred between 30,780 and 28,140 years BP with a very high field strength of 1 to 2×10 T (around 3.5 times higher than Earths current 5.8×10 T) which subsequently decreased to .2 to .3×10 T. There is also evidence of a second excursion around 26,000 BP with

4687-465: The cave of Altamira in Spain ( c.  16,500 –15,000 BC). The cave of Lascaux has an image of a horse coloured with yellow ochre estimated to be 17,300 years old. Neolithic burials may have used red ochre pigments symbolically, either to represent a return to the earth or possibly as a form of ritual rebirth, in which the colour may symbolize blood and a hypothesized Great Goddess . The use of ochre

4796-399: The density of water varies with temperature, with a maximum at +4 degrees Celsius, thermal stratification is an important physical characteristic of a lake that controls the fauna and flora , sedimentation, chemistry, and other aspects of individual lakes. First, the colder, denser water typically forms a layer near the bottom, which is called the hypolimnion . Second, normally overlying

4905-698: The national coat of arms , adopted in 2000, includes red ochre , while (yellow) ochre appears in the arms of the University of Transkei . Ochre is also used as a symbol of Indigenous Australians , and appears on the Flag of the Northern Territory and on the flags of the Taungurung and Aṉangu people. A reddleman named Diggory Venn was prominently described in Thomas Hardy 's 1878 novel entitled The Return of

5014-527: The usewear on these tools with ethnographic and experimental sandstones confirmed at least 14 tools were used for seed grinding (9 from the Pleistocene, all 4 Holocene tools, and 1 of the undated tools). Evidence for seed grinding in Australia during the Pleistocene is rare, only having been confirmed in 1 other site at Cuddie Springs . In addition there have been 3 shell tools found dating to 40-30,000 years ago,

5123-475: The British fishing industry, where it was combined with oil and used to coat sails to protect them from seawater, giving them a reddish colour. The ochre was boiled in great caldrons, together with tar , tallow and oak bark , the last ingredient giving the name of barking yards to the places where the hot mixture was painted on to the sails, which were then hung up to dry. In 1894, a theft case provided insights into

5232-583: The Earth by extraterrestrial objects (either meteorites or asteroids ). Examples of meteorite lakes are Lonar Lake in India, Lake El'gygytgyn in northeast Siberia, and the Pingualuit crater lake in Quebec, Canada. As in the cases of El'gygytgyn and Pingualuit, meteorite lakes can contain unique and scientifically valuable sedimentary deposits associated with long records of paleoclimatic changes. In addition to

5341-420: The Earth. Most lakes are freshwater and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater . Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds , which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing

5450-522: The Latin and Italian name sinopia was given to wide range of dark red ochre pigments. Roman triumphators painted their faces red, perhaps to imitate the red-painted flesh of statues of the Gods. The Romans used yellow ochre in their paintings to represent gold and skin tones, and as a background colour. It is found frequently in the murals of Pompeii . Ochre pigments are plentiful across Australia, especially

5559-551: The Lusatian Lake District, Germany. In India, Sudarshana Lake is a historical artificial lake located in the semi-arid region of Girnar, Gujarat, originally constructed during the reign of Chandragupta Maurya. See: List of notable artificial lakes in the United States Meteorite lakes, also known as crater lakes (not to be confused with volcanic crater lakes ), are created by catastrophic impacts with

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5668-585: The Mungo Woman with radiocarbon was explained by contamination of newer carbon in the samples analyzed. 11 silcrete flakes dating to 50,000 years ago represents the first evidence of human occupation in the lake. In 2014 a full study of the lunette sequence at the lake using single grain OSL was conducted revealing the different phases of the lake. 10,000 years after humans first arrived, the lake began fluctuating from full to drier conditions, this pattern would remain until

5777-553: The Phoenicians as for other populations.” Greater-quality pigments and more intricate applications would typically indicate people of greater rank or particular significance within the community. Moreover, the presence and quality of pigments in a burial site may indicate the identity or social standing of the deceased. In addition to acting as offerings to the gods and protective symbols, pigments were employed to adorn grave goods including pottery, amulets, and other objects, so elevating

5886-404: The afterlife, and social hierarchy, thus providing a richer understanding of Phoenician customs and values. Ochre was the most commonly used pigment for painting walls in the ancient Mediterranean world . In Ancient Greece , red ochre was called μίλτος, míltos (hence Miltiades : "red-haired" or "ruddy"). In ancient Athens when Assembly was called, a contingent of public slaves would sweep

5995-399: The arrival of European settlers in the area since the 1880s, introduced species, notably rabbits and sheep , have destroyed the vegetation cover. Herds of feral goats are also present in the region. This has led to increased erosion of the dunes. However, this erosion has led to the uncovering of many human and animal remains. Wind has moved sand and soil eastwards from the Walls, forming

6104-856: The base of the valley has remained in place for more than 100 years but the terrain below the lake is in danger of a catastrophic flood if the dam were to fail during a future earthquake. Tal-y-llyn Lake in north Wales is a landslide lake dating back to the last glaciation in Wales some 20000 years ago. Aeolian lakes are produced by wind action . These lakes are found mainly in arid environments, although some aeolian lakes are relict landforms indicative of arid paleoclimates . Aeolian lakes consist of lake basins dammed by wind-blown sand; interdunal lakes that lie between well-oriented sand dunes ; and deflation basins formed by wind action under previously arid paleoenvironments. Moses Lake in Washington , United States,

6213-585: The climax of the practice coinciding broadly with the emergence of Homo sapiens. Evidence of ochre's use in Australia is more recent, dated to 50,000 years ago, while new research has uncovered evidence in Asia that is dated to 40,000 years ago. A re-examination of artifacts uncovered in 1908 at Le Moustier rock shelters in France has identified Mousterian stone tools that were attached to grips made of ochre and bitumen . The grips were formulated with 55% ground goethite ochre and 45% cooked liquid bitumen to create

6322-915: The courses of mature rivers, where a river channel has widened over a basin formed by eroded floodplains and wetlands . Some lakes are found in caverns underground . Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ice age . All lakes are temporary over long periods of time , as they will slowly fill in with sediments or spill out of the basin containing them. Artificially controlled lakes are known as reservoirs , and are usually constructed for industrial or agricultural use, for hydroelectric power generation, for supplying domestic drinking water , for ecological or recreational purposes, or for other human activities. The word lake comes from Middle English lake ('lake, pond, waterway'), from Old English lacu ('pond, pool, stream'), from Proto-Germanic * lakō ('pond, ditch, slow moving stream'), from

6431-513: The creation of lakes by the disruption of preexisting drainage networks, it also creates within arid regions endorheic basins that contain salt lakes (also called saline lakes). They form where there is no natural outlet, a high evaporation rate and the drainage surface of the water table has a higher-than-normal salt content. Examples of these salt lakes include Great Salt Lake and the Dead Sea . Another type of tectonic lake caused by faulting

6540-622: The difference between lakes and ponds , and neither term has an internationally accepted definition across scientific disciplines or political boundaries. For example, limnologists have defined lakes as water bodies that are simply a larger version of a pond, which can have wave action on the shoreline or where wind-induced turbulence plays a major role in mixing the water column. None of these definitions completely excludes ponds and all are difficult to measure. For this reason, simple size-based definitions are increasingly used to separate ponds and lakes. Definitions for lake range in minimum sizes for

6649-559: The digestive system while others, which are rich in iron, can assist with lethargy and fatigue. Ochre is also often mixed with plant oils and animal fats to create other medicines. This ochre was mined by Aboriginal people in pits and quarries across Australia; there are over 400 recorded sites, and many of these (including the Ochre Pits in the Tjoritja / West MacDonnell National Park ) are still in use. The National Museum of Australia has

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6758-457: The discovery of the remains of Mungo Man , the oldest human remains found in Australia, Mungo Woman , the oldest human remains in the world to be ritually cremated and as the location of the Lake Mungo geomagnetic excursion, the first convincing evidence that Geomagnetic excursions are a geomagnetic phenomenon rather than sedimentological . The area that in 1979 was declared a National Park

6867-503: The drying out of the wood in canoes and the carvings of meeting houses; later missionaries estimated that it would last for 30 years. It was also roughly smeared over the face, especially by women, to keep off insects. Solid chunks of ochre were ground on a flat but rough surfaced rock to produce the powder. In Newfoundland its use is most often associated with the Beothuk , whose use of red ochre led them to be referred to as "Red Indians" by

6976-415: The earth of mountains, where particular seams like sulphur are found. And there, where these seams are, sinopia, green earth and other types of pigment are found...And the abovementioned pigments running through this landscape looked as a scar on the face of a man or of a woman looks...I went in behind with my little knife, prospecting at the scar of this pigment; and in this way, I promise you, I never sampled

7085-523: The exception of criterion 3, the others have been accepted or elaborated upon by other hydrology publications. The majority of lakes on Earth are freshwater , and most lie in the Northern Hemisphere at higher latitudes . Canada , with a deranged drainage system , has an estimated 31,752 lakes larger than 3 square kilometres (1.2 sq mi) in surface area. The total number of lakes in Canada

7194-399: The final drying of the lake around 15,000 years ago. The people in the area were able to adapt to the changing conditions of the lake. Although there was a decline of activity, people remained in the area after the lake dried. In 2015 evidence of a "mega-lake" event was found after using dGPS to clarify the main shoreline of the lake and comparing the results with a line of beach gravel that

7303-620: The first Europeans to Newfoundland. The Beothuk may have also used yellow ochre to colour their hair. It was also used by the Maritime Archaic as evidenced by its discovery in the graves of over 100 individuals during an archaeological excavation at Port au Choix . Its use was widespread at times in the Eastern Woodlands cultural area of Canada and the US; the Red Ocher people complex refers to

7412-425: The grains of sand from the particles of ochre. The remaining mixture was then decanted in large basins, to further separate the ochre from the sand. The water was then drained, and the ochre was dried, cut into bricks, crushed, sifted, and then classified by colour and quality. The best quality was reserved for artists' pigments. In Britain , ochre was mined at Brixham , England . It became an important product for

7521-537: The ground of their dwellings, and that a paste of ochre was used for decorative purposes in every phase of their domestic life. We must assume no less, if we are to account for the veritable mines of ochre on which some of them lived... The Ancient Picts were said to paint themselves "Iron Red" according to the Gothic historian Jordanes . Frequent references in Irish myth to "red men" ( Gaelic : Fer Dearg) make it likely that such

7630-422: The hypolimnion is a transition zone known as the metalimnion . Finally, overlying the metalimnion is a surface layer of warmer water with a lower density, called the epilimnion . This typical stratification sequence can vary widely, depending on the specific lake or the time of year, or a combination of both. The classification of lakes by thermal stratification presupposes lakes with sufficient depth to form

7739-907: The intentional damming of rivers and streams, rerouting of water to inundate a previously dry basin , or the deliberate filling of abandoned excavation pits by either precipitation runoff , ground water , or a combination of both. Artificial lakes may be used as storage reservoirs that provide drinking water for nearby settlements , to generate hydroelectricity , for flood management , for supplying agriculture or aquaculture , or to provide an aquatic sanctuary for parks and nature reserves . The Upper Silesian region of southern Poland contains an anthropogenic lake district consisting of more than 4,000 water bodies created by human activity. The diverse origins of these lakes include: reservoirs retained by dams, flooded mines, water bodies formed in subsidence basins and hollows, levee ponds, and residual water bodies following river regulation. Same for

7848-409: The island. Strangely there is no evidence for this mega-lake event in the southern part of the lunette. Fish otoliths have been recovered from hearths in the lake, using radiocarbon they were dated to 19,000 years ago. Analysis of the geochemistry of the otoliths confirmed that the fish came into the lake a few years before death, they came into the lake during flooding periods and became trapped when

7957-466: The karst regions at the Dalmatian coast of Croatia and within large parts of Florida . A landslide lake is created by the blockage of a river valley by either mudflows , rockslides , or screes . Such lakes are most common in mountainous regions. Although landslide lakes may be large and quite deep, they are typically short-lived. An example of a landslide lake is Quake Lake , which formed as

8066-435: The lake level. Ochre The word ochre also describes clays coloured with iron oxide derived during the extraction of tin and copper . Ochre is a family of earth pigments, which includes yellow ochre, red ochre, purple ochre, sienna, and umber. The major ingredient of all the ochres is iron(III) oxide-hydroxide , known as limonite , which gives them a yellow colour. A range of other minerals may also be included in

8175-468: The lake was evaporating. The fish would've became sluggish from oxygen deprivation in the lake leading to the theory of humans coming to the lake during these evaporating periods to hunt easy fish. 17 sandstone tools have been found at Lake Mungo, 10 of these date to 25-14,000 years ago in the Pleistocene, 4 were deposited around 8,000 years ago in the Holocene, and 3 couldn't be dated with certainty. Comparing

8284-648: The largest lakes on Earth are rift lakes occupying rift valleys, e.g. Central African Rift lakes and Lake Baikal . Other well-known tectonic lakes, Caspian Sea , the Sea of Aral , and other lakes from the Pontocaspian occupy basins that have been separated from the sea by the tectonic uplift of the sea floor above the ocean level. Often, the tectonic action of crustal extension has created an alternating series of parallel grabens and horsts that form elongate basins alternating with mountain ranges. Not only does this promote

8393-528: The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed, which allows for the development of lacustrine deposits . In a holomictic lake, the uniformity of temperature and density allows the lake waters to completely mix. Based upon thermal stratification and frequency of turnover, holomictic lakes are divided into amictic lakes , cold monomictic lakes , dimictic lakes , warm monomictic lakes, polymictic lakes , and oligomictic lakes. Lake stratification does not always result from

8502-560: The level of a lake are controlled by the difference between the input and output compared to the total volume of the lake. Significant input sources are precipitation onto the lake, runoff carried by streams and channels from the lake's catchment area, groundwater channels and aquifers, and artificial sources from outside the catchment area. Output sources are evaporation from the lake, surface and groundwater flows, and any extraction of lake water by humans. As climate conditions and human water requirements vary, these will create fluctuations in

8611-408: The local clay was richer in yellowish limonite or reddish hematite. The red earth from Pozzuoli near Naples was a salmon pink, while the pigment from Tuscany contained manganese, making it a darker reddish brown called terra di siena, or sienna earth. The 15th-century painter Cennino Cennini described the uses of ochre pigments in his famous treatise on painting. This pigment is found in

8720-481: The mainland; lakes cut off from larger lakes by a bar; or lakes divided by the meeting of two spits. Organic lakes are lakes created by the actions of plants and animals. On the whole they are relatively rare in occurrence and quite small in size. In addition, they typically have ephemeral features relative to the other types of lakes. The basins in which organic lakes occur are associated with beaver dams, coral lakes, or dams formed by vegetation. Peat lakes are

8829-448: The mixture: When natural sienna and umber pigments are heated, they are dehydrated and some of the limonite is transformed into hematite, giving them more reddish colours, called burnt sienna and burnt umber. Ochres are non-toxic and can be used to make an oil paint that dries quickly and covers surfaces thoroughly. Modern ochre pigments often are made using synthetic iron oxide. Pigments which use natural ochre pigments indicate it with

8938-424: The mode of origin, lakes have been named and classified according to various other important factors such as thermal stratification , oxygen saturation, seasonal variations in lake volume and water level, salinity of the water mass, relative seasonal permanence, degree of outflow, and so on. The names used by the lay public and in the scientific community for different types of lakes are often informally derived from

9047-485: The moon Titan , which orbits the planet Saturn . The shape of lakes on Titan is very similar to those on Earth. Lakes were formerly present on the surface of Mars, but are now dry lake beds . In 1957, G. Evelyn Hutchinson published a monograph titled A Treatise on Limnology , which is regarded as a landmark discussion and classification of all major lake types, their origin, morphometric characteristics, and distribution. Hutchinson presented in his publication

9156-415: The morphology of the lakes' physical characteristics or other factors. Also, different cultures and regions of the world have their own popular nomenclature. One important method of lake classification is on the basis of thermal stratification, which has a major influence on the animal and plant life inhabiting a lake, and the fate and distribution of dissolved and suspended material in the lake. For example,

9265-406: The most numerous lakes in the world. Most lakes in northern Europe and North America have been either influenced or created by the latest, but not last, glaciation, to have covered the region. Glacial lakes include proglacial lakes , subglacial lakes , finger lakes , and epishelf lakes. Epishelf lakes are highly stratified lakes in which a layer of freshwater, derived from ice and snow melt,

9374-543: The name PY-43 (Pigment yellow 43) on the label, following the Colour Index International system. Over recent decades, red ochre has played a pivotal role in discussions about the cognitive and cultural evolution of early modern humans during the African Middle Stone Age. In Africa, evidence for the processing and use of red ochre pigments has been dated by archaeologists to around 300,000 years ago,

9483-791: The names include: Lakes may be informally classified and named according to the general chemistry of their water mass. Using this classification method, the lake types include: A paleolake (also palaeolake ) is a lake that existed in the past when hydrological conditions were different. Quaternary paleolakes can often be identified on the basis of relict lacustrine landforms, such as relict lake plains and coastal landforms that form recognizable relict shorelines called paleoshorelines . Paleolakes can also be recognized by characteristic sedimentary deposits that accumulated in them and any fossils that might be contained in these sediments. The paleoshorelines and sedimentary deposits of paleolakes provide evidence for prehistoric hydrological changes during

9592-581: The open space of the Agora with ropes dipped in miltos : those citizens that loitered there instead of moving to the Assembly area would risk having their clothes stained with the paint. This prevented them from wearing these clothes in public again, as failure to attend the Assembly incurred a fine. In England, red ochre was also known as "raddle", "reddle", or "ruddle" and was used to mark sheep and can also be used as

9701-562: The organic-rich deposits of pre-Quaternary paleolakes are important either for the thick deposits of oil shale and shale gas contained in them, or as source rocks of petroleum and natural gas . Although of significantly less economic importance, strata deposited along the shore of paleolakes sometimes contain coal seams . Lakes have numerous features in addition to lake type, such as drainage basin (also known as catchment area), inflow and outflow, nutrient content, dissolved oxygen , pollutants , pH , and sedimentation . Changes in

9810-518: The preservation of animal skins, among other uses. At Lake Mungo , in Western New South Wales , burial sites have been excavated and burial materials, including ochre-painted bones, have been dated to the arrival of people in Australia; " Mungo Man " (LM3) was buried sprinkled with red ochre at least 30,000 BP, and possibly as early as 60,000 BP. Ochre was also widely used as medicine and, when ingested, some ochres have an antacid effect on

9919-680: The site is very significant to the Aboriginal Australian people from the area. The Willandra region is inhabited by the Barkindji , Ngiyampaa and Mutthi Mutthi peoples, who have entered Joint Management Agreements with the Government of New South Wales to manage the lake and the Mungo National Park since 2001. 33°45′S 143°05′E  /  33.750°S 143.083°E  / -33.750; 143.083 Lake A lake

10028-642: The site of the Blombos Cave in South Africa, dated to around 75,000 years ago. " Mungo Man " (LM3) in Australia was buried sprinkled with red ochre around 40,000 years ago. In Wales, the paleolithic burial called the Red Lady of Paviland from its coating of red ochre has been dated to around 33,000 years before present. Paintings of animals made with red and yellow ochre pigments have been found in paleolithic sites at Pech Merle in France (ca. 25,000 years old), and

10137-565: The spiritual purity of the interment. The visual impact of red ochre could also have been intended to preserve the appearance of the body or make it presentable for mourning ceremonies, ensuring that the deceased was honored appropriately. This vivid color would enhance the overall visual and emotional impact of funerary displays. In essence, the use of red ochre and other pigments in Phoenician funerary contexts highlights their cultural and symbolic importance, reflecting deep-seated beliefs about death,

10246-433: The study was widely criticised for its contradictions with other research and uncertainty of using electron-spin resonance as a dating method for the site. Further work using OSL dating by Bowler in 2003 has modified the dating of both remains to 40,000 years ago, revealing both burials to be near in timing and confirming Mungo Woman to be the earliest known human to have been cremated. The drastic difference in age for dating

10355-404: The thermal stratification, as well as the degree and frequency of mixing, has a strong control over the distribution of oxygen within the lake. Professor F.-A. Forel , also referred to as the "Father of limnology", was the first scientist to classify lakes according to their thermal stratification. His system of classification was later modified and improved upon by Hutchinson and Löffler. As

10464-456: The times that they existed. There are two types of paleolake: Paleolakes are of scientific and economic importance. For example, Quaternary paleolakes in semidesert basins are important for two reasons: they played an extremely significant, if transient, role in shaping the floors and piedmonts of many basins; and their sediments contain enormous quantities of geologic and paleontologic information concerning past environments. In addition,

10573-641: The two. Lakes are also distinct from lagoons , which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of oceans or large lakes. Most lakes are fed by springs , and both fed and drained by creeks and rivers , but some lakes are endorheic without any outflow, while volcanic lakes are filled directly by precipitation runoffs and do not have any inflow streams. Natural lakes are generally found in mountainous areas (i.e. alpine lakes ), dormant volcanic craters , rift zones and areas with ongoing glaciation . Other lakes are found in depressed landforms or along

10682-545: The use of the pigment as a food adulterant in sausage roll production whereby the accused apprentice was taught to soak brown bread in red ochre, salt , and pepper to give the appearance of beef sausage for the filling. As noted above, the industrial process for making ochre pigment was developed by the French scientist Jean-Étienne Astier in the 1780s, using the ochre mines and quarries in Roussillon , Rustrel, or Gargas in

10791-462: The word pond , and a lesser number of names ending with lake are, in quasi-technical fact, ponds. One textbook illustrates this point with the following: "In Newfoundland, for example, almost every lake is called a pond, whereas in Wisconsin, almost every pond is called a lake." One hydrology book proposes to define the term "lake" as a body of water with the following five characteristics: With

10900-501: Was also discovered by Bowler, on 26 February 1974. The remains were covered with red ochre , in what is the earliest known incidence of such a burial practice. Red ochre is commonly used in burials for ritualistic purposes. Mungo Woman was initially dated to 26,000 years ago through radiocarbon methods, meanwhile Mungo Man was dated to 42-45,000 years ago from thermoluminescence . Another study proposed that Mungo Man could be almost 80,000 years old using electron-spin resonance however

11009-488: Was considered to be eternal and indestructible. The skin and bones of the gods were believed to be made of gold. The Egyptians used yellow ochre extensively in tomb painting, though occasionally they used orpiment , which made a brilliant colour, but was highly toxic, since it was made with arsenic . In tomb paintings, men were always shown with brown faces, women with yellow ochre or gold faces. Red ochre in Ancient Egypt

11118-417: Was developed by the French scientist Jean-Étienne Astier in the 1780s. He was from Roussillon in the Vaucluse department of Provence , and he was fascinated by the cliffs of red and yellow clay in the region. He invented a process to make the pigment on a large scale. First the clay was extracted from open pits or mines. The raw clay contained about 10 to 20 percent ochre. Then he washed the clay to separate

11227-403: Was evocative of blood and energy, red ochre represented life, death, and rebirth. It also represented the desire for resurrection and the belief in an afterlife. In order to honor the deceased and get them ready for their passage to the afterlife, these pigments, particularly red ochre, were most likely applied to their body or other grave goods as part of the burial rites. “Phoenicians' love of red

11336-438: Was found to be more elevated than the main shoreline. The mega-lake was dated to a brief period at 24,000 years ago. As the lake volume increased, it connected with Lake Leaghur , which resulted in the north part of the lunette forming an island temporarily. There have been traces of human adaptivity found during this time on the island, including hearths indicating food being eaten on the island and stone artefacts sourced from off

11445-563: Was mixed with some type of liquid raw material to create a rough paint. The liquid material was usually seal oil or cod liver oil in Newfoundland and Labrador, while Scandinavian recipes sometimes called for linseed oil . Red ochre paint was sometimes prepared months in advance and allowed to sit, and the smell of ochre paint being prepared is still remembered today. Variations in local recipes, shades of ore, and type of oil used resulted in regional variations in colour. Because of this, it

11554-611: Was originally a shallow natural lake and an example of a lake basin dammed by wind-blown sand. China's Badain Jaran Desert is a unique landscape of megadunes and elongated interdunal aeolian lakes, particularly concentrated in the southeastern margin of the desert. Shoreline lakes are generally lakes created by blockage of estuaries or by the uneven accretion of beach ridges by longshore and other currents. They include maritime coastal lakes, ordinarily in drowned estuaries; lakes enclosed by two tombolos or spits connecting an island to

11663-529: Was subdivided from Gol-Gol holdings after WWI for returned soldiers , the Cameron Brothers, who named it after St Mungo ’s Church in Scotland. The station lease included the eastern lake lunette , while a small section at the southern end was covered by Jounli station. Sediments at Lake Mungo have been deposited over more than 120,000 years. On the eastern side of the Mungo lake bed are the "Walls of China,"

11772-423: Was the pigment of choice for use in vernacular outbuildings and work buildings associated with the cod fishery. Deposits of ochre are found throughout Newfoundland, notably near Fortune Harbour and at Ochre Pit Cove. While earliest settlers may have used locally collected ochre, people were later able to purchase pre-ground ochre through local merchants, largely imported from England . The dry ingredient, ochre,

11881-777: Was used as a rouge, or lip gloss for women. Ochre-coloured lines were also discovered on the Unfinished obelisk at the northern region of the Aswan Stone Quarry , marking work sites. Ochre clays were also used medicinally in Ancient Egypt: such use is described in the Ebers Papyrus from Egypt, dating to about 1550 BC. Pigments, particularly red ochre, were essential to grave rituals in ancient Phoenician society. They were more than just cosmetics; they also had important symbolic and ritualistic connotations. With its vivid color that

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