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92-407: The word inselberg is a loan word from German , and means "island mountain". The term was coined in 1900 by geologist Wilhelm Bornhardt (1864–1946) to describe the abundance of such features found in eastern Africa . At that time, the term applied only to arid landscape features. However, it has since been used to describe a broader geography and range of rock features, leading to confusion about

184-455: A Mohs hardness of 2 to 4, dense limestone can have a crushing strength of up to 180 MPa . For comparison, concrete typically has a crushing strength of about 40 MPa. Although limestones show little variability in mineral composition, they show great diversity in texture. However, most limestone consists of sand-sized grains in a carbonate mud matrix. Because limestones are often of biological origin and are usually composed of sediment that

276-457: A bloom of cyanobacteria or microalgae . However, stable isotope ratios in modern carbonate mud appear to be inconsistent with either of these mechanisms, and abrasion of carbonate grains in high-energy environments has been put forward as a third possibility. Formation of limestone has likely been dominated by biological processes throughout the Phanerozoic , the last 540 million years of

368-433: A loan word , loan-word ) is a word at least partly assimilated from one language (the donor language) into another language (the recipient or target language), through the process of borrowing . Borrowing is a metaphorical term that is well established in the linguistic field despite its acknowledged descriptive flaws: nothing is taken away from the donor language and there is no expectation of returning anything (i.e.,

460-515: A talus -bordered residual known as a castle koppie appears. By this association various inselberg fields in Africa and South America are assumed to be the vestiges of eroded etchplains . Clusters of inselbergs, called inselberg fields and inselberg plains, occur in various parts of the world, including Tanzania , the Anti-Atlas of Morocco , Northeast Brazil , Namibia , the interior of Angola , and

552-434: A carbonate rock outcrop can be estimated in the field by etching the surface with dilute hydrochloric acid. This etches away the calcite and aragonite, leaving behind any silica or dolomite grains. The latter can be identified by their rhombohedral shape. Crystals of calcite, quartz , dolomite or barite may line small cavities ( vugs ) in the rock. Vugs are a form of secondary porosity, formed in existing limestone by

644-612: A central quartz grain or carbonate mineral fragment. These likely form by direct precipitation of calcium carbonate onto the ooid. Pisoliths are similar to ooids, but they are larger than 2 mm in diameter and tend to be more irregular in shape. Limestone composed mostly of ooids is called an oolite or sometimes an oolitic limestone . Ooids form in high-energy environments, such as the Bahama platform, and oolites typically show crossbedding and other features associated with deposition in strong currents. Oncoliths resemble ooids but show

736-449: A change in environment that increases the solubility of calcite. Dense, massive limestone is sometimes described as "marble". For example, the famous Portoro "marble" of Italy is actually a dense black limestone. True marble is produced by recrystallization of limestone during regional metamorphism that accompanies the mountain building process ( orogeny ). It is distinguished from dense limestone by its coarse crystalline texture and

828-949: A composition reflecting the organisms that produced them and the environment in which they were produced. Low-magnesium calcite skeletal grains are typical of articulate brachiopods , planktonic (free-floating) foraminifera, and coccoliths . High-magnesium calcite skeletal grains are typical of benthic (bottom-dwelling) foraminifera, echinoderms , and coralline algae . Aragonite skeletal grains are typical of molluscs , calcareous green algae , stromatoporoids , corals , and tube worms . The skeletal grains also reflect specific geological periods and environments. For example, coral grains are more common in high-energy environments (characterized by strong currents and turbulence) while bryozoan grains are more common in low-energy environments (characterized by quiet water). Ooids (sometimes called ooliths) are sand-sized grains (less than 2mm in diameter) consisting of one or more layers of calcite or aragonite around

920-412: A considerable fraction of the limestone bed. At depths greater than 1 km (0.62 miles), burial cementation completes the lithification process. Burial cementation does not produce stylolites. When overlying beds are eroded, bringing limestone closer to the surface, the final stage of diagenesis takes place. This produces secondary porosity as some of the cement is dissolved by rainwater infiltrating

1012-483: A drop of dilute hydrochloric acid is dropped on it. Dolomite is also soft but reacts only feebly with dilute hydrochloric acid, and it usually weathers to a characteristic dull yellow-brown color due to the presence of ferrous iron. This is released and oxidized as the dolomite weathers. Impurities (such as clay , sand, organic remains, iron oxide , and other materials) will cause limestones to exhibit different colors, especially with weathered surfaces. The makeup of

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1104-621: A few million years, as this is the most stable form of calcium carbonate. Ancient carbonate formations of the Precambrian and Paleozoic contain abundant dolomite, but limestone dominates the carbonate beds of the Mesozoic and Cenozoic . Modern dolomite is quite rare. There is evidence that, while the modern ocean favors precipitation of aragonite, the oceans of the Paleozoic and middle to late Cenozoic favored precipitation of calcite. This may indicate

1196-455: A few thousand years. As rainwater mixes with groundwater, aragonite and high-magnesium calcite are converted to low-calcium calcite. Cementing of thick carbonate deposits by rainwater may commence even before the retreat of the sea, as rainwater can infiltrate over 100 km (60 miles) into sediments beneath the continental shelf. As carbonate sediments are increasingly deeply buried under younger sediments, chemical and mechanical compaction of

1288-490: A high percentage of the mineral dolomite , CaMg(CO 3 ) 2 . Magnesian limestone is an obsolete and poorly-defined term used variously for dolomite, for limestone containing significant dolomite ( dolomitic limestone ), or for any other limestone containing a significant percentage of magnesium . Most limestone was formed in shallow marine environments, such as continental shelves or platforms , though smaller amounts were formed in many other environments. Much dolomite

1380-402: A lesser extent, Romance languages borrowed from a variety of other languages; in particular English has become an important source in more recent times. The study of the origin of these words and their function and context within the language can illuminate some important aspects and characteristics of the language, and it can reveal insights on the phenomenon of lexical borrowing in linguistics as

1472-435: A limestone sample except in thin section and are less common in ancient limestones, possibly because compaction of carbonate sediments disrupts them. Limeclasts are fragments of existing limestone or partially lithified carbonate sediments. Intraclasts are limeclasts that originate close to where they are deposited in limestone, while extraclasts come from outside the depositional area. Intraclasts include grapestone , which

1564-466: A lower Mg/Ca ratio in the ocean water of those times. This magnesium depletion may be a consequence of more rapid sea floor spreading , which removes magnesium from ocean water. The modern ocean and the ocean of the Mesozoic have been described as "aragonite seas". Most limestone was formed in shallow marine environments, such as continental shelves or platforms . Such environments form only about 5% of

1656-525: A lower diversity of organisms and a greater fraction of silica and clay minerals characteristic of marls . The Green River Formation is an example of a prominent freshwater sedimentary formation containing numerous limestone beds. Freshwater limestone is typically micritic. Fossils of charophyte (stonewort), a form of freshwater green algae, are characteristic of these environments, where the charophytes produce and trap carbonates. Limestones may also form in evaporite depositional environments . Calcite

1748-523: A mechanism for dolomitization, with one 2004 review paper describing it bluntly as "a myth". Ordinary seawater is capable of converting calcite to dolomite, if the seawater is regularly flushed through the rock, as by the ebb and flow of tides (tidal pumping). Once dolomitization begins, it proceeds rapidly, so that there is very little carbonate rock containing mixed calcite and dolomite. Carbonate rock tends to be either almost all calcite/aragonite or almost all dolomite. About 20% to 25% of sedimentary rock

1840-524: A method of enriching a language. According to Hans Henrich Hock and Brian Joseph, "languages and dialects ... do not exist in a vacuum": there is always linguistic contact between groups. The contact influences what loanwords are integrated into the lexicon and which certain words are chosen over others. In some cases, the original meaning shifts considerably through unexpected logical leaps, creating false friends . The English word Viking became Japanese バイキング ( baikingu ), meaning "buffet", because

1932-448: A plausible source of mud. Another possibility is direct precipitation from the water. A phenomenon known as whitings occurs in shallow waters, in which white streaks containing dispersed micrite appear on the surface of the water. It is uncertain whether this is freshly precipitated aragonite or simply material stirred up from the bottom, but there is some evidence that whitings are caused by biological precipitation of aragonite as part of

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2024-423: A political tinge: right-wing publications tend to use more Arabic-originated words, left-wing publications use more words adopted from Indo-European languages such as Persian and French, while centrist publications use more native Turkish root words. Almost 350 years of Dutch presence in what is now Indonesia have left significant linguistic traces. Though very few Indonesians have a fluent knowledge of Dutch,

2116-449: A radial rather than layered internal structure, indicating that they were formed by algae in a normal marine environment. Peloids are structureless grains of microcrystalline carbonate likely produced by a variety of processes. Many are thought to be fecal pellets produced by marine organisms. Others may be produced by endolithic (boring) algae or other microorganisms or through breakdown of mollusc shells. They are difficult to see in

2208-403: A review of Gneuss's (1955) book on Old English loan coinages, whose classification, in turn, is the one by Betz (1949) again. Weinreich (1953: 47ff.) differentiates between two mechanisms of lexical interference, namely those initiated by simple words and those initiated by compound words and phrases. Weinreich (1953: 47) defines simple words "from the point of view of the bilinguals who perform

2300-525: A separation mainly on spelling is (or, in fact, was) not common except amongst German linguists, and only when talking about German and sometimes other languages that tend to adapt foreign spellings, which is rare in English unless the word has been widely used for a long time. According to the linguist Suzanne Kemmer, the expression "foreign word" can be defined as follows in English: "[W]hen most speakers do not know

2392-452: A variety of ways. The studies by Werner Betz (1971, 1901), Einar Haugen (1958, also 1956), and Uriel Weinreich (1963) are regarded as the classical theoretical works on loan influence. The basic theoretical statements all take Betz's nomenclature as their starting point. Duckworth (1977) enlarges Betz's scheme by the type "partial substitution" and supplements the system with English terms. A schematic illustration of these classifications

2484-416: Is a type of carbonate sedimentary rock which is the main source of the material lime . It is composed mostly of the minerals calcite and aragonite , which are different crystal forms of CaCO 3 . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as

2576-560: Is also favored on the seaward margin of shelves and platforms, where there is upwelling deep ocean water rich in nutrients that increase organic productivity. Reefs are common here, but when lacking, ooid shoals are found instead. Finer sediments are deposited close to shore. The lack of deep sea limestones is due in part to rapid subduction of oceanic crust, but is more a result of dissolution of calcium carbonate at depth. The solubility of calcium carbonate increases with pressure and even more with higher concentrations of carbon dioxide, which

2668-482: Is an uncommon mineral in limestone, and siderite or other carbonate minerals are rare. However, the calcite in limestone often contains a few percent of magnesium . Calcite in limestone is divided into low-magnesium and high-magnesium calcite, with the dividing line placed at a composition of 4% magnesium. High-magnesium calcite retains the calcite mineral structure, which is distinct from dolomite. Aragonite does not usually contain significant magnesium. Most limestone

2760-402: Is carbonate rock, and most of this is limestone. Limestone is found in sedimentary sequences as old as 2.7 billion years. However, the compositions of carbonate rocks show an uneven distribution in time in the geologic record. About 95% of modern carbonates are composed of high-magnesium calcite and aragonite. The aragonite needles in carbonate mud are converted to low-magnesium calcite within

2852-474: Is clusters of peloids cemented together by organic material or mineral cement. Extraclasts are uncommon, are usually accompanied by other clastic sediments, and indicate deposition in a tectonically active area or as part of a turbidity current . The grains of most limestones are embedded in a matrix of carbonate mud. This is typically the largest fraction of an ancient carbonate rock. Mud consisting of individual crystals less than 5 μm (0.20 mils) in length

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2944-416: Is commonly white to gray in color. Limestone that is unusually rich in organic matter can be almost black in color, while traces of iron or manganese can give limestone an off-white to yellow to red color. The density of limestone depends on its porosity, which varies from 0.1% for the densest limestone to 40% for chalk. The density correspondingly ranges from 1.5 to 2.7 g/cm . Although relatively soft, with

3036-420: Is controlled largely by the amount of dissolved carbon dioxide ( CO 2 ) in the water. This is summarized in the reaction: Increases in temperature or decreases in pressure tend to reduce the amount of dissolved CO 2 and precipitate CaCO 3 . Reduction in salinity also reduces the solubility of CaCO 3 , by several orders of magnitude for fresh water versus seawater. Near-surface water of

3128-545: Is converted to low-magnesium calcite. Diagenesis is the likely origin of pisoliths , concentrically layered particles ranging from 1 to 10 mm (0.039 to 0.394 inches) in diameter found in some limestones. Pisoliths superficially resemble ooids but have no nucleus of foreign matter, fit together tightly, and show other signs that they formed after the original deposition of the sediments. Silicification occurs early in diagenesis, at low pH and temperature, and contributes to fossil preservation. Silicification takes place through

3220-503: Is deposited close to where it formed, classification of limestone is usually based on its grain type and mud content. Most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera . These organisms secrete structures made of aragonite or calcite, and leave these structures behind when they die. Other carbonate grains composing limestones are ooids , peloids , and limeclasts ( intraclasts and extraclasts  [ ca ] ). Skeletal grains have

3312-460: Is described as coquinite . Chalk is a soft, earthy, fine-textured limestone composed of the tests of planktonic microorganisms such as foraminifera, while marl is an earthy mixture of carbonates and silicate sediments. Limestone forms when calcite or aragonite precipitate out of water containing dissolved calcium, which can take place through both biological and nonbiological processes. The solubility of calcium carbonate ( CaCO 3 )

3404-617: Is described as micrite . In fresh carbonate mud, micrite is mostly small aragonite needles, which may precipitate directly from seawater, be secreted by algae, or be produced by abrasion of carbonate grains in a high-energy environment. This is converted to calcite within a few million years of deposition. Further recrystallization of micrite produces microspar , with grains from 5 to 15 μm (0.20 to 0.59 mils) in diameter. Limestone often contains larger crystals of calcite, ranging in size from 0.02 to 0.1 mm (0.79 to 3.94 mils), that are described as sparry calcite or sparite . Sparite

3496-462: Is distinguished from micrite by a grain size of over 20 μm (0.79 mils) and because sparite stands out under a hand lens or in thin section as white or transparent crystals. Sparite is distinguished from carbonate grains by its lack of internal structure and its characteristic crystal shapes. Geologists are careful to distinguish between sparite deposited as cement and sparite formed by recrystallization of micrite or carbonate grains. Sparite cement

3588-472: Is given below. The phrase "foreign word" used in the image below is a mistranslation of the German Fremdwort , which refers to loanwords whose pronunciation, spelling, inflection or gender have not been adapted to the new language such that they no longer seem foreign. Such a separation of loanwords into two distinct categories is not used by linguists in English in talking about any language. Basing such

3680-453: Is left behind as an isolated mountain. The strength of the uneroded rock is often attributed to the tightness of its jointing . Inselbergs can be reshaped by ice sheets much the same way as roches moutonnées . In northern Sweden , examples of this type of inselberg are called flyggbergs . The inselbergs of Eastern Africa tend to be a refuge for life in the Serengeti of Tanzania and in

3772-560: Is one of the first minerals to precipitate in marine evaporites. Most limestone is formed by the activities of living organisms near reefs, but the organisms responsible for reef formation have changed over geologic time. For example, stromatolites are mound-shaped structures in ancient limestones, interpreted as colonies of cyanobacteria that accumulated carbonate sediments, but stromatolites are rare in younger limestones. Organisms precipitate limestone both directly as part of their skeletons, and indirectly by removing carbon dioxide from

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3864-473: Is otherwise chemically fairly pure, with clastic sediments (mainly fine-grained quartz and clay minerals ) making up less than 5% to 10% of the composition. Organic matter typically makes up around 0.2% of a limestone and rarely exceeds 1%. Limestone often contains variable amounts of silica in the form of chert or siliceous skeletal fragments (such as sponge spicules, diatoms , or radiolarians ). Fossils are also common in limestone. Limestone

3956-472: Is produced by decaying organic matter settling into the deep ocean that is not removed by photosynthesis in the dark depths. As a result, there is a fairly sharp transition from water saturated with calcium carbonate to water unsaturated with calcium carbonate, the lysocline , which occurs at the calcite compensation depth of 4,000 to 7,000 m (13,000 to 23,000 feet). Below this depth, foraminifera tests and other skeletal particles rapidly dissolve, and

4048-514: Is secondary dolomite, formed by chemical alteration of limestone. Limestone is exposed over large regions of the Earth's surface, and because limestone is slightly soluble in rainwater, these exposures often are eroded to become karst landscapes. Most cave systems are found in limestone bedrock. Limestone has numerous uses: as a chemical feedstock for the production of lime used for cement (an essential component of concrete ), as aggregate for

4140-484: Is the word tea , which originated in Hokkien but has been borrowed into languages all over the world. For a sufficiently old Wanderwort, it may become difficult or impossible to determine in what language it actually originated. Most of the technical vocabulary of classical music (such as concerto , allegro , tempo , aria , opera , and soprano ) is borrowed from Italian , and that of ballet from French . Much of

4232-435: Is used to describe a mountain that rises from an area of relatively flat and/or lower terrain. For instance, Mount Monadnock rises 610 metres (2,000 ft) above its surrounding terrain and stands, at 965 m (3,165 ft), nearly 300 m (1,000 ft) higher than any mountain peak within 48 km (30 mi). Inselbergs are common in eroded and weathered shields . The presence of an inselberg typically indicates

4324-500: The English language include café (from French café , which means "coffee"), bazaar (from Persian bāzār , which means "market"), and kindergarten (from German Kindergarten , which literally means "children's garden"). The word calque is a loanword, while the word loanword is a calque: calque comes from the French noun calque ("tracing; imitation; close copy"); while

4416-494: The Masai Mara of Kenya . Where the soil is too thin or hard to support tree life in large areas, soil trapped by inselbergs can be dense with trees while the surrounding land contains only short grass. Hollows in the rock surfaces provide catchments for rainwater. Many animals have adapted to the use of inselbergs, including the lion , the hyrax , and an abundance of bird and reptile life. Loan word A loanword (also

4508-431: The terminology of the sport of fencing also comes from French. Many loanwords come from prepared food, drink, fruits, vegetables, seafood and more from languages around the world. In particular, many come from French cuisine ( crêpe , Chantilly , crème brûlée ), Italian ( pasta , linguine , pizza , espresso ), and Chinese ( dim sum , chow mein , wonton ). Loanwords are adapted from one language to another in

4600-604: The ʻokina and macron diacritics. Most English affixes, such as un- , -ing , and -ly , were used in Old English. However, a few English affixes are borrowed. For example, the verbal suffix -ize (American English) or ise (British English) comes from Greek -ιζειν ( -izein ) through Latin -izare . Pronunciation often differs from the original language, occasionally dramatically, especially when dealing with place names . This often leads to divergence when many speakers anglicize pronunciations as other speakers try to maintain

4692-421: The 14th century had the highest number of loans. In the case of Romanian, the language underwent a "re-Latinization" process later than the others (see Romanian lexis , Romanian language § French, Italian, and English loanwords ), in the 18th and 19th centuries, partially using French and Italian words (many of these themselves being earlier borrowings from Latin) as intermediaries, in an effort to modernize

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4784-496: The Earth's history. Limestone may have been deposited by microorganisms in the Precambrian , prior to 540 million years ago, but inorganic processes were probably more important and likely took place in an ocean more highly oversaturated in calcium carbonate than the modern ocean. Diagenesis is the process in which sediments are compacted and turned into solid rock . During diagenesis of carbonate sediments, significant chemical and textural changes take place. For example, aragonite

4876-520: The Indonesian language inherited many words from Dutch, both in words for everyday life (e.g., buncis from Dutch boontjes for (green) beans) and as well in administrative, scientific or technological terminology (e.g., kantor from Dutch kantoor for office). The Professor of Indonesian Literature at Leiden University , and of Comparative Literature at UCR , argues that roughly 20% of Indonesian words can be traced back to Dutch words. In

4968-616: The Romance language's character. Latin borrowings can be known by several names in Romance languages: in French, for example, they are usually referred to as mots savants , in Spanish as cultismos , and in Italian as latinismi . Latin is usually the most common source of loanwords in these languages, such as in Italian, Spanish, French, Portuguese, etc., and in some cases the total number of loans may even outnumber inherited terms (although

5060-430: The accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite , a closely related rock, which contains

5152-414: The ancestral language, rather than because one borrowed the word from the other. A loanword is distinguished from a calque (or loan translation ), which is a word or phrase whose meaning or idiom is adopted from another language by word-for-word translation into existing words or word-forming roots of the recipient language. Loanwords, in contrast, are not translated. Examples of loanwords in

5244-434: The base of roads, as white pigment or filler in products such as toothpaste or paint, as a soil conditioner , and as a popular decorative addition to rock gardens . Limestone formations contain about 30% of the world's petroleum reservoirs . Limestone is composed mostly of the minerals calcite and aragonite , which are different crystal forms of calcium carbonate ( CaCO 3 ). Dolomite , CaMg(CO 3 ) 2 ,

5336-657: The beds. This may include the formation of vugs , which are crystal-lined cavities within the limestone. Diagenesis may include conversion of limestone to dolomite by magnesium-rich fluids. There is considerable evidence of replacement of limestone by dolomite, including sharp replacement boundaries that cut across bedding. The process of dolomitization remains an area of active research, but possible mechanisms include exposure to concentrated brines in hot environments ( evaporative reflux ) or exposure to diluted seawater in delta or estuary environments ( Dorag dolomitization ). However, Dorag dolomitization has fallen into disfavor as

5428-462: The depositional fabric of carbonate rocks. Dunham divides the rocks into four main groups based on relative proportions of coarser clastic particles, based on criteria such as whether the grains were originally in mutual contact, and therefore self-supporting, or whether the rock is characterized by the presence of frame builders and algal mats. Unlike the Folk scheme, Dunham deals with the original porosity of

5520-469: The deposits are highly porous, so that they have a spongelike texture, they are typically described as tufa . Secondary calcite deposited by supersaturated meteoric waters ( groundwater ) in caves is also sometimes described as travertine. This produces speleothems , such as stalagmites and stalactites . Coquina is a poorly consolidated limestone composed of abraded pieces of coral , shells , or other fossil debris. When better consolidated, it

5612-406: The development of inselbergs have been advanced, refuted and reiterated over a period of more than seventy years." Volcanic or other processes, such as a meteor crater , may give rise to a body of rock resistant to erosion , inside a body of softer rock such as limestone , which is more susceptible to erosion. When the less resistant rock is eroded away to form a plain , the more resistant rock

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5704-406: The earth's oceans are oversaturated with CaCO 3 by a factor of more than six. The failure of CaCO 3 to rapidly precipitate out of these waters is likely due to interference by dissolved magnesium ions with nucleation of calcite crystals, the necessary first step in precipitation. Precipitation of aragonite may be suppressed by the presence of naturally occurring organic phosphates in

5796-547: The empire, such as Albanian , Bosnian , Bulgarian , Croatian , Greek , Hungarian , Ladino , Macedonian , Montenegrin and Serbian . After the empire fell after World War I and the Republic of Turkey was founded, the Turkish language underwent an extensive language reform led by the newly founded Turkish Language Association , during which many adopted words were replaced with new formations derived from Turkic roots. That

5888-403: The existence of a nearby plateau or highland, or their remnants. This is especially the case for inselbergs composed of sedimentary rock , which will display the same stratigraphic units as this nearby plateau. However once exposed, the inselbergs are destroyed by marginal collapse of joint blocks and exfoliation sheets . This process leaves behind tors perched at their summits and, over time,

5980-399: The first refers to the grains and the second to the cement. For example, a limestone consisting mainly of ooids, with a crystalline matrix, would be termed an oosparite. It is helpful to have a petrographic microscope when using the Folk scheme, because it is easier to determine the components present in each sample. Robert J. Dunham published his system for limestone in 1962. It focuses on

6072-769: The first restaurant in Japan to offer buffet -style meals, inspired by the Nordic smörgåsbord , was opened in 1958 by the Imperial Hotel under the name "Viking". The German word Kachel , meaning "tile", became the Dutch word kachel meaning "stove", as a shortening of kacheloven , from German Kachelofen , a cocklestove . The Indonesian word manset primarily means "base layer", "inner bolero", or "detachable sleeve", while its French etymon manchette means "cuff". Limestone Limestone ( calcium carbonate CaCO 3 )

6164-572: The formation of distinctive minerals from the silica and clay present in the original limestone. Two major classification schemes, the Folk and Dunham, are used for identifying the types of carbonate rocks collectively known as limestone. Robert L. Folk developed a classification system that places primary emphasis on the detailed composition of grains and interstitial material in carbonate rocks . Based on composition, there are three main components: allochems (grains), matrix (mostly micrite), and cement (sparite). The Folk system uses two-part names;

6256-429: The geologic record are called bioherms . Many are rich in fossils, but most lack any connected organic framework like that seen in modern reefs. The fossil remains are present as separate fragments embedded in ample mud matrix. Much of the sedimentation shows indications of occurring in the intertidal or supratidal zones, suggesting sediments rapidly fill available accommodation space in the shelf or platform. Deposition

6348-708: The language, often adding concepts that did not exist until then, or replacing words of other origins. These common borrowings and features also essentially serve to raise mutual intelligibility of the Romance languages, particularly in academic/scholarly, literary, technical, and scientific domains. Many of these same words are also found in English (through its numerous borrowings from Latin and French) and other European languages. In addition to Latin loanwords, many words of Ancient Greek origin were also borrowed into Romance languages, often in part through scholarly Latin intermediates, and these also often pertained to academic, scientific, literary, and technical topics. Furthermore, to

6440-692: The late 17th century, the Dutch Republic had a leading position in shipbuilding. Czar Peter the Great , eager to improve his navy, studied shipbuilding in Zaandam and Amsterdam . Many Dutch naval terms have been incorporated in the Russian vocabulary, such as бра́мсель ( brámselʹ ) from Dutch bramzeil for the topgallant sail , домкра́т ( domkrát ) from Dutch dommekracht for jack , and матро́с ( matrós ) from Dutch matroos for sailor. A large percentage of

6532-489: The learned borrowings are less often used in common speech, with the most common vocabulary being of inherited, orally transmitted origin from Vulgar Latin). This has led to many cases of etymological doublets in these languages. For most Romance languages, these loans were initiated by scholars, clergy, or other learned people and occurred in Medieval times, peaking in the late Middle Ages and early Renaissance era - in Italian,

6624-476: The lexicon of Romance languages , themselves descended from Vulgar Latin , consists of loanwords (later learned or scholarly borrowings ) from Latin. These words can be distinguished by lack of typical sound changes and other transformations found in descended words, or by meanings taken directly from Classical or Ecclesiastical Latin that did not evolve or change over time as expected; in addition, there are also semi-learned terms which were adapted partially to

6716-404: The loanword). Loanwords may be contrasted with calques , in which a word is borrowed into the recipient language by being directly translated from the donor language rather than being adopted in (an approximation of) its original form. They must also be distinguished from cognates , which are words in two or more related languages that are similar because they share an etymological origin in

6808-403: The meaning of these terms is reasonably well-defined only in second language acquisition or language replacement events, when the native speakers of a certain source language (the substrate) are somehow compelled to abandon it for another target language (the superstrate). A Wanderwort is a word that has been borrowed across a wide range of languages remote from its original source; an example

6900-479: The northern portions of Finland and Sweden . The classification of Anthony Young (1969) distinguishes six types of inselbergs; buttes , conical hills , convex-concave hills, rock crest over regolith-covered slope, rock dome (sugarloaf) and kopje or tor . The types of rock of which inselbergs are made include granite , gneiss and gabbro . Summarizing the understanding on the origin of inselbergs in 1974, geomorphologist Michael Thomas writes "Hypotheses for

6992-410: The ocean basins, but limestone is rarely preserved in continental slope and deep sea environments. The best environments for deposition are warm waters, which have both a high organic productivity and increased saturation of calcium carbonate due to lower concentrations of dissolved carbon dioxide. Modern limestone deposits are almost always in areas with very little silica-rich sedimentation, reflected in

7084-463: The original phonology even though a particular phoneme might not exist or have contrastive status in English. For example, the Hawaiian word ʻaʻā is used by geologists to specify lava that is thick, chunky, and rough. The Hawaiian spelling indicates the two glottal stops in the word, but the English pronunciation, / ˈ ɑː ( ʔ ) ɑː / , contains at most one. The English spelling usually removes

7176-763: The precise definition of the term. In a 1973 study examining the use of the term, one researcher found that the term had been used for features in savannah climates 40% of the time, arid or semi-arid climates 32% of the time, humid-subtropical and arctic 12% of the time, and 6% each in humid-tropical and Mediterranean climates. A 1972 paper defined inselbergs as "steep-sided isolated hills rising relatively abruptly above gently sloping ground". This definition includes such features as buttes ; conical hills with rectilinear sides typically found in arid regions; regolith -covered concave-convex hills; rock crests over regolith slopes; rock domes with near vertical sides; tors (koppies) formed of large boulders but with solid rock cores. Thus,

7268-426: The reaction: Fossils are often preserved in exquisite detail as chert. Cementing takes place rapidly in carbonate sediments, typically within less than a million years of deposition. Some cementing occurs while the sediments are still under water, forming hardgrounds . Cementing accelerates after the retreat of the sea from the depositional environment, as rainwater infiltrates the sediment beds, often within just

7360-482: The relative purity of most limestones. Reef organisms are destroyed by muddy, brackish river water, and carbonate grains are ground down by much harder silicate grains. Unlike clastic sedimentary rock, limestone is produced almost entirely from sediments originating at or near the place of deposition. Limestone formations tend to show abrupt changes in thickness. Large moundlike features in a limestone formation are interpreted as ancient reefs , which when they appear in

7452-460: The rock. The Dunham scheme is more useful for hand samples because it is based on texture, not the grains in the sample. A revised classification was proposed by Wright (1992). It adds some diagenetic patterns to the classification scheme. Travertine is a term applied to calcium carbonate deposits formed in freshwater environments, particularly waterfalls , cascades and hot springs . Such deposits are typically massive, dense, and banded. When

7544-479: The sediments increases. Chemical compaction takes place by pressure solution of the sediments. This process dissolves minerals from points of contact between grains and redeposits it in pore space, reducing the porosity of the limestone from an initial high value of 40% to 80% to less than 10%. Pressure solution produces distinctive stylolites , irregular surfaces within the limestone at which silica-rich sediments accumulate. These may reflect dissolution and loss of

7636-662: The sediments of the ocean floor abruptly transition from carbonate ooze rich in foraminifera and coccolith remains ( Globigerina ooze) to silicic mud lacking carbonates. In rare cases, turbidites or other silica-rich sediments bury and preserve benthic (deep ocean) carbonate deposits. Ancient benthic limestones are microcrystalline and are identified by their tectonic setting. Fossils typically are foraminifera and coccoliths. No pre-Jurassic benthic limestones are known, probably because carbonate-shelled plankton had not yet evolved. Limestones also form in freshwater environments. These limestones are not unlike marine limestone, but have

7728-564: The terms monadnock and inselberg may not perfectly match, though some authors have explicitly argued these terms are completely synonymous. Monadnock is derived from an Abenaki term for an isolated hill or a lone mountain that stands above the surrounding area, typically by surviving erosion. Geologists took the name from Mount Monadnock in southwestern New Hampshire . It is thought to derive from either menonadenak ( transl.  smooth mountain ) or menadena ( transl.  isolated mountain ). In this context, monadnock

7820-487: The transfer, rather than that of the descriptive linguist. Accordingly, the category 'simple' words also includes compounds that are transferred in unanalysed form". After this general classification, Weinreich then resorts to Betz's (1949) terminology. The English language has borrowed many words from other cultures or languages. For examples, see Lists of English words by country or language of origin and Anglicisation . Some English loanwords remain relatively faithful to

7912-533: The water by photosynthesis and thereby decreasing the solubility of calcium carbonate. Limestone shows the same range of sedimentary structures found in other sedimentary rocks. However, finer structures, such as lamination , are often destroyed by the burrowing activities of organisms ( bioturbation ). Fine lamination is characteristic of limestone formed in playa lakes , which lack the burrowing organisms. Limestones also show distinctive features such as geopetal structures , which form when curved shells settle to

8004-553: The water. Although ooids likely form through purely inorganic processes, the bulk of CaCO 3 precipitation in the oceans is the result of biological activity. Much of this takes place on carbonate platforms . The origin of carbonate mud, and the processes by which it is converted to micrite, continue to be a subject of research. Modern carbonate mud is composed mostly of aragonite needles around 5 μm (0.20 mils) in length. Needles of this shape and composition are produced by calcareous algae such as Penicillus , making this

8096-465: The way the name would sound in the original language, as in the pronunciation of Louisville . During more than 600 years of the Ottoman Empire , the literary and administrative language of the empire was Turkish , with many Persian and Arabic loanwords, called Ottoman Turkish , considerably differing from the everyday spoken Turkish of the time. Many such words were adopted by other languages of

8188-655: The word loanword and the phrase loan translation are translated from German nouns Lehnwort and Lehnübersetzung ( German: [ˈleːnʔybɐˌzɛt͡sʊŋ] ). Loans of multi-word phrases, such as the English use of the French term déjà vu , are known as adoptions, adaptations, or lexical borrowings. Although colloquial and informal register loanwords are typically spread by word-of-mouth, technical or academic loanwords tend to be first used in written language, often for scholarly, scientific, or literary purposes. The terms substrate and superstrate are often used when two languages interact. However,

8280-695: The word and if they hear it think it is from another language, the word can be called a foreign word. There are many foreign words and phrases used in English such as bon vivant (French), mutatis mutandis (Latin), and Schadenfreude (German)." This is not how the term is used in this illustration: [REDACTED] On the basis of an importation-substitution distinction, Haugen (1950: 214f.) distinguishes three basic groups of borrowings: "(1) Loanwords show morphemic importation without substitution.... (2) Loanblends show morphemic substitution as well as importation.... (3) Loanshifts show morphemic substitution without importation". Haugen later refined (1956) his model in

8372-416: Was likely deposited in pore space between grains, suggesting a high-energy depositional environment that removed carbonate mud. Recrystallized sparite is not diagnostic of depositional environment. Limestone outcrops are recognized in the field by their softness (calcite and aragonite both have a Mohs hardness of less than 4, well below common silicate minerals) and because limestone bubbles vigorously when

8464-426: Was part of the ongoing cultural reform of the time, in turn a part in the broader framework of Atatürk's Reforms , which also included the introduction of the new Turkish alphabet . Turkish also has taken many words from French , such as pantolon for trousers (from French pantalon ) and komik for funny (from French comique ), most of them pronounced very similarly. Word usage in modern Turkey has acquired

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