The main tectonic element of North America is the North Amer and Kan platform with the Canadian crystal shield within the platform, a number of large tectonic elements are distinguished that control the location of oil and gas provinces and regions (Fig. 54)
In the inner part of the platform, Paleozoic oil and gas bearing provinces are distinguished, within which oil and gas bearing areas associated with tectonic elements are isolated: with the arched uplifts of Cincinnati, Central Kansas, etc.; with intraplatform depressions Illinois, Michigan, Permian basin. In the junction zones of the platform with folded belts, the Paleozoic Appalachian in the east and the Paleozoic-Mesozoic of the Rocky Mountains in the west stand out. In the southwest of the continent, the Gulf Coast Province (Gulf of Mexico) is distinguished, which is a passive continental margin of the North American continent that has been developing since the Lower Mesozoic. On the Pacific coast
arctic ocean
Rice. 54. Scheme of tectonic and petrogeological zoning of North America (according to Yu.N. Uspenskaya).
1 - outcrops of the Precambrian crystalline basement, 2 - area of development of the Caledonian folding, 3 - area of development of the Hercynian folding, 4 - areas of development of the Mesozoic-Cenozoic folding of the Cordillera, 5 - oil and gas bearing territories of the North American platform, 6 - intermountain depressions of the Cordillera folded belt.
Oil and gas bearing provinces and regions: 1 - Colville trough; 2 - Beaufort-Mackenzie basin; 3 - Albert depression; 4 - syneclise Williston; 5 - intermontane depressions of the Rocky Mountains; 6 - Inner Western Province; 7 - Perm depression; 8 - bend arch; 9 - ledge Azark; 10 - Illinois depression; 11 - Michigan depression; 12 - the arch of Cincinnati; 13 - Pre-Appalachian trough; 14 - the province of the Gulf of Mexico; 15 - Atlantic province; 16 - California; 17 - Cook's Bay.
the California province of Alpine age stands out. On the Alaska Peninsula, two provinces are distinguished - the Paleozoic-Mesozoic of the Arctic slope (Colville Basin) and the Cenozoic of Cook Inlet on the Pacific coast of the peninsula.
The North American continent is distinguished by the highest degree of exploration.
Deposits are known here in deposits from the Cambrian to the Pliocene, confined to a wide variety of traps within large intra-platform depressions and uplifts, in zones of articulation of the platform with folded areas, various intermountain depressions and modern passive and active continental margins. As an example of a large vault, we can cite the Tsincinnati vault, which is 1000 km long and up to 400 km wide. The deposits are confined to local brachianticlines and zones of wedging out of sandstones. The main productive horizons are concentrated in the Ordovician and Silurian parts of the section. One of the richest intraplatform structures is the Permian depression. Its area is 365 thousand km 2. The deposits are confined to local structures and traps of stratigraphic and lithological types. The main productive horizons are concentrated in the Permian and Carboniferous parts of the section. In total, more than 5.5 thousand deposits have been discovered here. The Western Canadian oil and gas province is a typical example of the structure of the junction zone of an ancient platform with a folded area. Here, the deposits are confined to local structures, pinchout zones, and reef structures; in the junction zone of the trough with the folded zone, deposits associated with thrust dislocations are widely developed; on the eastern side of the trough, the world's largest deposits of heavy oils and malts are known (fields Athabasca, Vabasca, etc.), with reserves of 120 billion tons. The oil and gas province of the Gulf of Mexico is an example of the oil and gas potential of a passive continental margin that continues its development. Its evolution begins from the Permo-Triassic period. The stratigraphic range of oil and gas potential is from Upper Jurassic to Quaternary deposits. The number of productive horizons exceeds 100. The deposits are confined to local structures, diapiric domes, to traps of stratigraphic and lithological types. A large number of deposits have been discovered in the waters of the Gulf of Mexico (about 500). Among the largest fields in this province is the East Texas oil field, the second largest in the United States (initial recoverable reserves of about 800 million tons). It is assumed that this field will be developed for almost 100 years; by the beginning of the 1990s, more than 600 million tons were produced at the field. oil (beginning of production in 1933).
On the western coast of the continent there are numerous Cenozoic intermountain depressions, the productive horizons in which are confined to Miocene and Pliocene sediments. In the south of the Alaska Peninsula, there is the oil and gas region of Cook Inlet, which is genetically related to the active continental margin that continues to develop. Oil and gas fields are discovered here both on the mainland and in the waters of the bay.
In the United States, the largest oil field in the northern hemisphere, Prudhoe Bay (province of the Arctic slope of Alaska), was discovered. The deposit is confined to an anticline cut by an unconformity (Fig. SS). Three deposits were found at the field in the depth interval of 2050-3200 m in the Permian-Carboniferous, Triassic and Lower Cretaceous deposits. The recoverable oil reserves at the field are estimated at 1.3 billion m 3 .
Rme. 55 Schematic section of the Prue do Bay field (Gabrieliants, 1984). 1 - oil; 2 - gas; 3 - water; 4 - surface of stratigraphic unconformity.
- - The center of the Sakhalin region, 10417 km east of Moscow. Located in the southeastern part of Sakhalin Island, on the river. Susuya. The climate is temperate monsoon...
Cities of Russia
- - All South American Indianoid types according to Agassiz typology...
Physical Anthropology. Illustrated explanatory dictionary
- - one of the two roads of Donbass, serving its southern and western coal deposits, southern metallurgy plants, most of the cargo turnover of the Krivoy Rog-Donbass direction and the most important on the Sea of \u200b\u200bAzov ...
Technical railway dictionary
- - Downwind...
Geographic Encyclopedia
- - urban settlement, r.c. on about. Kunashir; Sakhalin region Before the return of the Kuril Islands to Russia, the village. Furukampu; name from local toponymy, according to the lake, river and Furukampu bay ...
Geographic Encyclopedia
- - city, center of the Sakhalin region. Founded in 1882 as a settlement. Vladimirovka. Name from the personal name of Vladimir, which belonged to the local manager of hard labor ...
Geographic Encyclopedia
- - city, c. Sakhalin region RSFSR. Located in the southeast. parts about. Sakhalin, in the valley of the river. Susuya, at the foot of the Russian mountain. Us. in 1973 - 124 tons. Main in 1881 as a settlement. Vladimirovka...
Soviet historical encyclopedia
- - the common name of L. g., endemic to some countries of South America: Argentinean and Bolivian L. ....
Big Medical Dictionary
- - or Republica Oriental del Uruguay, Banda Oriental - one of the republics of South America, got its name from r. U., east. the coast of which it stretches to the Atlantic Ocean...
Encyclopedic Dictionary of Brockhaus and Euphron
- - The North American platform, an ancient platform in the central part of the continent of the same name. See North America, section Geological structure and minerals...
- - an ancient platform in the central part of the mainland of the same name. See North America, section Geological structure and minerals...
Great Soviet Encyclopedia
- - NORTH AMERICAN platform - Precambrian platform, covering most of the North. America and about. Greenland...
- - SOUTH CHINA platform - Precambrian platform occupying the basin of the lower reaches of the river. Yangtze. The cover of Paleozoic deposits has been preserved in the anteclises. In the Mesozoic, it experienced strong tectonic-magmatic activation ...
Big encyclopedic dictionary
- - an urban-type settlement in the Russian Federation, Sakhalin Region, on about. Kunashir, on the shore of the South Kuril Strait. 6.2 thousand inhabitants. Fish industry...
Big encyclopedic dictionary
- - a city in the Russian Federation, the center of the Sakhalin region, in the southern part of about. Sakhalin. Railway junction. 164.5 thousand inhabitants. Production association "Metallist"...
Big encyclopedic dictionary
- - "South American" anskaya platf "...
Russian spelling dictionary
"South American Platform" in books
Platform of the CPSU or "Democratic platform"?
From the book In the Gorbachev team: an inside look author Medvedev VadimPlatform of the CPSU or "Democratic platform"? Back in December, on behalf of Gorbachev, I began preparing materials for the pre-Congress party platform. Given instructions to IML (Smirnov), AON (Yanovsky), ION (Krasin). I also invited on a personal basis
Chapter 205 Pittsburgh Platform (1885). Columbus Platform (1937)
From the book Jewish World author Telushkin JosephChapter 205 Pittsburgh Platform (1885). Columbus Platform (1937) In 1885, a group of Reform rabbis met in Pittsburgh and redefined Judaism itself. From now on, they decided, observance of the ethics of the Torah, and not its rituals, should be obligatory:
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From the book Makhno and his time: On the Great Revolution and the Civil War 1917-1922. in Russia and Ukraine author Shubin Alexander Vladlenovich2. "Platform" In June 1926, Arshinov and Makhno put forward the draft "Organizational Platform of the General Union of Anarchists." He was supported by the editors of Dela Truda. On the basis of the distribution network of the magazine, the supporters of the project created the Federation of Anarcho-Communists "Delo Truda".
The platform of the reformists and the platform of the revolutionary social democrats
From the author's bookThe Platform of the Reformists and the Platform of the Revolutionary Social Democrats First page of the Social Democrat newspaper No. 28–29, November 5 (18), 1912 with V. I. Lenin's article "The Platform of the Reformists and the Platform of the Revolutionary Social Democrats" (Reduced) Revolutionary rise in Russia
Platform
From the book Encyclopedic Dictionary (P) author Brockhaus F. A.Platform Platform - this is the name of the elevation, usually wooden, arranged for an orchestra, choir or speaker; figuratively in England since the beginning of the 19th century. so they began to call any speech delivered with P "that is, usually at public meetings. As a result of this, P.
North American (Canadian) platform
From the book Great Soviet Encyclopedia (CE) of the author TSBSouth American depression
TSBSouth American platform
From the book Great Soviet Encyclopedia (South) of the author TSBSouth China Platform
From the book Great Soviet Encyclopedia (South) of the author TSBPlatform
From the book Notebook for Beginners. Mobile, accessible, convenient author Kovalevsky Anatoly YurievichPlatform The concept of "platform" is rather arbitrary and for the most part - the fruit of the efforts of the PR department of Intel, which was born during the promotion of the Centrino brand. Any laptop can have a colored sticker with the name of this brand if it contains all the components: an Intel processor,
Platform
From the book Notebook [secrets of effective use] author Ptashinsky VladimirPlatform Today, there are two types of platforms used to build laptops: PC and Mac. Theoretically, there are mobile computers based on the Sun platform, but they are extremely rare, due to the specifics of the tasks performed on them. The PC platform can
Argentine fever (South American hemorrhagic fever)
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From the book Seasonal Diseases. Summer author Shilnikov Lev VadimovichBolivian hemorrhagic fever (South American hemorrhagic fever) Bolivian hemorrhagic fever is a natural focal viral disease endemic to the central provinces of Bolivia. characterized by high fever, hemorrhagic
- SOUTH AMERICAN PLATFORM
(Brazilian platform) Precambrian platform, occupying the central and eastern parts of the South. America. The foundation protrudes to the surface within the Guiana and Brazilian ... - SOUTH AMERICAN PLATFORM
platform (geol.), an ancient platform in the central and eastern parts of the mainland of the same name. See South America, section Geological structure and useful ... - SOUTH AMERICAN PLATFORM
`South American`an ... - SOUTH AMERICAN PLATFORM
(Brazilian platform), Precambrian platform, occupying the central and eastern parts of the South. America. The foundation protrudes to the surface within the Guiana and ... - PLATFORM in the Dictionary of thieves' jargon:
- … - AMERICAN
MARKETING ASSOCIATION) AMA is the largest among foreign national marketing associations (more than 50 thousand members). Created in 1937 for ... - AMERICAN in the Dictionary of Economic Terms:
DEPOSITARY RECEIVE - a receipt certifying the ownership of shares of a company - a resident of a foreign state, acquired in the process of their placement in the United States; … - PLATFORM in the Big Encyclopedic Dictionary:
in geology - one of the main deep structures of the earth's crust, characterized by a low intensity of tectonic movements, magmatic activity and a flat relief. … - PLATFORM in the Encyclopedic Dictionary of Brockhaus and Euphron:
I is the name of an elevation, usually wooden, arranged for an orchestra, choir or speaker; in a figurative sense in England from the beginning of the XIX ... - PLATFORM in the Modern Encyclopedic Dictionary:
(French plate-forme, from plat - flat and forme - form), 1) elevated platform, platform. 2) A small railway station, half-station or ... - PLATFORM
[French plate-forme literally - flat form] 1) an elevated platform (for example, a platform) along the path at the railway station; 2) a small railway station, half-station; 3) ... - PLATFORM in the Encyclopedic Dictionary:
s, w. 1. Platform, platform, in particular at railway stations for boarding, loading. High p.||Wed. DEBARKADER, APRON. 2. … - PLATFORM in the Encyclopedic Dictionary:
, -s, f. 1. Elevation, platform for boarding passengers, loading luggage. Railway point 2. A small railway station. 3. Open railway car ... - PLATFORM
PLATFORM political, program of action, demands put forward by political. party, group, org-tion or otd. … - PLATFORM in the Big Russian Encyclopedic Dictionary:
PLATFORM (geol.), one of Ch. deep structures of the earth's crust, characterized by a low intensity of tectonic. movements, magmatic activities and flat terrain. P. … - PLATFORM in the Big Russian Encyclopedic Dictionary:
PLATFORM (French plate-forme, from plat - flat and forme - shape), elevated platform, platform. Small railway station, station or platform ... - AMERICAN in the Big Russian Encyclopedic Dictionary:
"AMERIAN ENCYCLOPEDIA" ("American"; The Encyclopedia Americana), univers. encyclopedia in USA, 1st ed. in 16 vols., 1903-04, New York. Since 1918 it has been published ... - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN FEDERATION OF LABOR - CONGRESS OF INDUSTRIAL UNIONS (AFL - CIO), the largest prof. unification in the USA, created. in 1955 by merging ... - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN RACE (Americanoid race), is part of the great Mongoloid race. Combines, along with Mongoloid features, some Caucasoid features (lack of epicanthus, ... - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN ORTHODOX CHURCH, local autocephalous church. Beginning of A.p.c. established in Alaska in 1793 by the Synod of Rus. orthodox spiritual mission churches. … - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN WHITE BUTTERFLY, butterfly fam. bears, quarantine pest fruit. cultures in the North. America and Europe. The wings are snow-white, often with dark ... - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN ACADEMY OF CINEMATOGRAPHIC ARTS AND SCIENCES (Academy of Motion Picture Arts and Sciences, AMPAS), American Film Academy, Society. org-tion in the USA. … - AMERICAN in the Big Russian Encyclopedic Dictionary:
AMERIAN AID ADMINISTRATION, see "ARA" ... - PLATFORM in the Encyclopedia of Brockhaus and Efron:
? this is the name of an elevation, usually wooden, arranged for an orchestra, choir or speaker; in a figurative sense in England from the beginning of the XIX ... - PLATFORM in the Full accentuated paradigm according to Zaliznyak:
platfo "rma, platfo" rm, platfo "rm, platfo" rm, platfo" rm, platfo" rm, platfo" rm, platfo" rm, platfo" rm, platfo" rm, platfo" rm, platform" rm, ... - PLATFORM in the Merry Etymological Dictionary:
- … - PLATFORM in the New Dictionary of Foreign Words:
(French plate-forme lit. flat form) 1) an elevated platform along the path at the railway. stations (see also platform); 2) ... - PLATFORM in the Dictionary of Foreign Expressions:
[fr. plate-form letters. flat form] 1. elevated platform along the track at the railway. stations (see also platform); 2. small railway station, ... - SOUTHERN in the dictionary of Synonyms of the Russian language.
- PLATFORM in the dictionary of Synonyms of the Russian language:
autoplatform, ramp, astroplatform, wagon, vibroplatform, elevation, landing stage, motoplatform, platform, slab, platform, podium, podium, sole, half-station, scaffold, program, station, flat, … - SOUTH...
- PLATFORM in the New explanatory and derivational dictionary of the Russian language Efremova:
1. g. 1) a) A flat, elevated platform that serves to accommodate smth. b) A platform for medical, decimal, etc. scales, on which ... - PLATFORM in the Dictionary of the Russian Language Lopatin:
platform, ... - PLATFORM in the Complete Spelling Dictionary of the Russian Language:
platform, ... - PLATFORM in the Spelling Dictionary:
platform, ... - PLATFORM in the Dictionary of the Russian Language Ozhegov:
political program of the party, public grouping Lib Theoretical platform elevation, platform for boarding passengers, loading luggage Railway platform thickened ... - PLATFORM in the Dahl Dictionary:
female , French scaffold, flooring, floor, current, palm, to install something, for example. guns; platform in front of… - PLATFORM in the Modern Explanatory Dictionary, TSB:
(French plate-forme, from plat - flat and forme - form), 1) elevated platform, platform. 2) A small railway station, half-station or ... - SOUTHERN
(no punch.). The first part of compound words in the meaning. southern, for example. South Caucasian... - PLATFORM in the Explanatory Dictionary of the Russian Language Ushakov:
platforms, w. (French plate-forme, lit. flat shape). 1. A flat, elevated platform from some kind of solid material. || Such a platform along the railway … - SOUTH...
The initial part of compound words, introducing the meaning of the words: southern (South African, south polar and ... - PLATFORM in the Explanatory Dictionary of Efremova:
platform 1. g. 1) a) A flat, elevated platform that serves to accommodate smth. b) A platform for medical, decimal, etc. weights, on ... - SOUTH...
The initial part of compound words, introducing the meaning of the word: southern (South African, south polar and ... - PLATFORM in the New Dictionary of the Russian Language Efremova:
- SOUTH...
The initial part of compound words, introducing the meaning of the words: southern (South African "an, south polar" ardent, etc.) ... - PLATFORM in the Big Modern Explanatory Dictionary of the Russian Language:
I 1. A flat, elevated platform that serves to accommodate something. ott. Playground medical, decimal, etc. scales on which is placed ... - SOUTH SAKHALIN DIOCESE
Open Orthodox Encyclopedia "TREE". South Sakhalin and Kuril diocese of the Russian Orthodox Church. Address: Russia, 693020, Yuzhno-Sakhalinsk, st. … - ROCOR EASTERN AMERICAN DIOCESE in the Orthodox Encyclopedia Tree:
Open Orthodox Encyclopedia "TREE". Attention, this article is not finished yet and contains only part of the necessary information. Eastern American and New York Diocese ... - RUSSIA, DIV. SOUTH GREAT RUSSIAN ADVERTISEMENT in the Brief Biographical Encyclopedia:
The Rzhno-Great Russian dialect embraces the modern provinces of Ryazan, Tambov, Tula, Oryol, Kaluga, some parts of Smolensk, Kursk and Chernigov; in addition, South Great Russian dialects, ... - SOUTH AFRICA in the Great Soviet Encyclopedia, TSB:
Republic, South Africa (Republick van Suid-Afrika, Republic of South Africa). I. General Information South Africa is a state in the extreme south of Africa. It borders… - SIBERIAN PLATFORM in the Great Soviet Encyclopedia, TSB:
platform, one of the large ancient (pre-Riphean) platforms, located in the middle part of North Asia. The western border of the platform coincides with the valley ...
The relief of South America is varied. According to the nature of the geological structure and features of the modern relief, South America is divided into two heterogeneous parts. The eastern part of the mainland is the ancient South American platform; western - actively developing folded belt of the Andes. The elevated sections of the platform - shields - correspond in relief to the Brazilian and Guiana plateaus. The troughs of the South American platform correspond to the giant lowland plains - the Amazonian, Orinoc, the system of internal plains (the Gran Chaco plain, the Laplata lowland), and the young Patagonian platform to the plains of Patagonia.
The Amazonian lowland is filled with marine and continental sediments. It was formed as a result of the activity of the Amazon River, as a result of the accumulation of sediments brought by the course. In the west, the lowland is very flat, the river valleys are slightly incised, the heights barely reach 150 m. Its northern and southern margins, underlain by crystalline rocks of the shields, are elevated and gradually turn into plateaus.
The Brazilian Plateau is located in the east of the mainland. It is a ledge of the crystalline basement of the platform, between which there are troughs filled with sedimentary rocks and volcanic lavas. This is the largest rise within the platform. The Brazilian plateau has heights from 250-300 m in the north to 800-900 m in the southeast. The relief of the plateau is a relatively leveled surface, above which blocky massifs and plateaus rise.
In the north of the mainland, the Guiana Plateau (300-400 m) is confined to the vast ledge of the folded base of the platform. Its relief is dominated by stepped plateaus.
The vast plains and large sections of the plateaus of South America are convenient for the life and economic activity of the population. (Show on the map the largest lowlands and plateaus and determine their maximum heights.)
The Andes is the longest mountain range on land with a length of 9000 km. The Andes are one of the highest mountain ranges in the world. In height, it is second only to the Tibetan-Himalayan mountainous country. Twenty peaks of the Andes rise to a height of more than 6 thousand meters. The highest of them is the city of Aconcagua (6960 m).
The formation of the Andes is the result of the interaction of two lithospheric plates, when the oceanic Nazca plate “dived” under the continental South American one. At the same time, the edge of the continental plate was crumpled into folds, forming mountains. Currently, mountain building continues. This is evidenced by the eruptions of numerous volcanoes and the strongest catastrophic earthquakes. Among the large volcanoes, one can note such as Chimborazo (6267 m), Cotopaxi (5897 m). The west coast, occupied by the Andes, belongs to the Pacific "Ring of Fire".
The strongest in the world recorded in 11-12 points occurred in 1960 in Chile. In 2010, an earthquake in Chile claimed several hundred lives. Serious disasters occur in the Andes every 10-15 years.
The Andes mountain system consists of several meridianally elongated mountain ranges. Between the ridges lie internal plateaus and plateaus, with a height of 3500 to 4500 m.
Minerals of South America
The mainland is rich in minerals. The richest deposits of iron and manganese ores are confined to the ancient shields of the South American Platform: the center and outskirts of the Brazilian Plateau, as well as the north of the Guiana Plateau. The largest iron ore mining area is Carajas. In the northern part, on the outskirts of both plateaus, there are very large deposits of bauxite, a raw material for the aluminum industry. Bauxites occur at shallow depths and are mined by open pit mining.
Ores of copper (Peru, Chile), tin (Bolivia), lead and zinc (Peru) have been explored in the Andes. The foothills of the Andes, especially Venezuela and Colombia, are rich in oil and natural gas. Coal deposits are less significant (Ecuador, Argentina). Many Andean countries are famous for their mining of precious stones. First of all, this applies to the extraction of emeralds in Colombia. Of the precious metals in South America, the largest reserves of silver are in Peru. The Andes belt is also famous for some non-metallic minerals. Saltpeter occupies the first place among them. The famous Chilean saltpeter and iodine are mined in the dried-up reservoirs of the Atacama.
The relief of South America is more diverse in comparison with Africa and Australia. The high Andes in the west separate the main flat part of the mainland from the Pacific Ocean. South America is characterized by active seismicity. South America is called the "pantry of the world." The mainland is rich in natural resources necessary for the development of many sectors of the economy.
South American platform South American platform
(Brazilian Platform), a Precambrian platform occupying central and eastern South America. The basement protrudes to the surface within the Guiana and Brazilian shields.
SOUTH AMERICAN PLATFORMSOUTH AMERICAN PLATFORM (Brazilian Platform), Precambrian (cm. PRECAMBRIAN) platform occupying the central and eastern parts of the South. America. The foundation protrudes to the surface within the Guiana (cm. GUIANE SHIELD) and Brazilian shields (cm. BRAZILIAN SHIELD).
encyclopedic Dictionary. 2009 .
See what the "South American Platform" is in other dictionaries:
- (Brazilian platform) Precambrian platform, occupying the central and eastern parts of the South. America. The foundation protrudes to the surface within the Guiana and Brazilian shields ... Big Encyclopedic Dictionary
See Art. South America. Mountain Encyclopedia. Moscow: Soviet Encyclopedia. Edited by E. A. Kozlovsky. 1984 1991 ... Geological Encyclopedia
South American platform- South American platform ... Russian spelling dictionary
- (geol.) an ancient platform in the central and eastern parts of the mainland of the same name. See South America, section Geological structure and minerals ...
SOUTH ... The first part of compound words. Contributes sign: southern, located to the south, in the south. South Australian (but South Australian Basin), South American (but South American Platform), South African (but South African Republic), ... ... encyclopedic Dictionary
south...- the first part of compound words. contributes the sign: southern, located to the south, in the south. South Australian (but the South Australian Basin), South American (but the South American Platform), South African (but the South African Republic), South China (but ... ... Dictionary of many expressions
Platform (geological), one of the main types of structural elements of the earth's crust (lithosphere); large (several thousand km across), relatively stable blocks of crust of sustained thickness, characterized by a very low degree ... ... Great Soviet Encyclopedia
I Platform (French plate forme, from plat flat and form form) 1) elevated platform, platform. 2) Small well. station, half-station. 3) An open-type freight car with small sides. 4) See Platform… … Great Soviet Encyclopedia
See South American platform. * * * BRAZILIAN PLATFORM BRAZILIAN PLATFORM, see South American platform (see SOUTH AMERICAN PLATFORM) ... encyclopedic Dictionary
The South American platform, an ancient platform with mainly Precambrian basement, occupying almost the entire extra-Andean part of the South continent. America. About geol. the structure of B. p., see Art. South America. Mountain Encyclopedia. M .: Soviet ... ... Geological Encyclopedia
