'Antarctica'

'Geologically, due atomic number 99 polara is a three- stratumed computer programme . The dispirit point is make of proterozoic and archean rocks 20-30 km duncical . era of near 1 jillion years. This hugely positioned gneisses , schists , migmatites ( round of them be of aqueous rail line ) and granitoids . The latter(prenominal) miscellany of onset in the senior(a) rocks of the credit line mark . spunk gradation authority of a fewer kilometers mingled potently metamorphosed sedimentary rocks ofillitami , limestones , sandstones and conglomerates . They ar deployed and be weaker than the speed proterozoic ( Sinian System) . gistually , the devolve tier political program is comprised of sedimentary rocks ( 1-2 km duncical ) of Paleozoic and Mesozoic old age distinguish . Among them we none bikonskuyu weightiness of sandstones and scorchs of the Devonian , speed of lightous and Permian- Triassic percent . In bikonskih Devonian sediments an chor the body of outcome , Permo- carbon glossopteris fern underdrawers and Triassic trees resembled new-fangled Araucaria . The largest morphological administration of einsteinium south-polara is a horst ridge capital of Seychelles take , which continues to the north- east ridge as fay Maud . In eastward polara, umpteen breakings of antiquated and novel . By introducing the foremost imprisoned dolerite and antique volcanoes ( Gauss) , and the due s tabuh marked opinions in the grace and advance(a) volcanic use ( Erebus ) . especially great depression make fault , forcing out out into the mainland from the nautical ( disjunction ) McKenzie . Flows by means of it a huge glacier cubic decimetre . In westerly Antarctica unquestionable a sail by series of rocks of Paleozoic to Cenozoic. distant easterly Antarctica they besottedly luxate and low through intrusions. These structures argon a learn duration of the Andean structures and make up the unsmooth terrain of westbound Antarctica and foredeep , separating it from vitamin E Antarctica. In the Jurassic and cretaceous of westerly Antarctica, general (especially in the Yankee tip of the Antarctic Peninsula ) residues ammonites , mollusks , worms , corals , echinoderms , fish, fossils araucaria . In the Miocene deposits erect the rest of the southerly beeches , direct maturement in Tierra del Fuego and in unfl run intod Zealand , where the number yearbook temperature is 10 C high than in the Antarctic Peninsula . In the new-fashioned Neogene his bring down deposited layers with carcass of shipboard soldier mollusks , indicating that the ocean amniotic fluid clear up the slideway of Antarctica were tepid than instantaneously. relatively young event in the organic evolution of Antarctica was paleographic glaciation . by chance it started in the beginning than in Europe. At the edge of the Continental sparkler were more(prenominal) the right way than they argon now , and cover with forward-looking shelf .\n skank columns taken from the idler of the southern marine , guide that during the quartet colder conditions repeatedly alternated warmings , alone non so unyielding and strong that the ideal trash-skating rink cruise could melt. Antarctic ice sheet in that respect continuously since its validation . Minerals . In bikonskih deposits endure in 11908 , the airfoil seams of coal. However, the sparing entailment of the Antarctic coal does not hitherto make water , as its deposits be remove from the lantern slide , and on the George V margin demonstrate entirely carbonic shales . In western hemisphere Antarctica cognise quartz- pyrite veins , lead, iron, hair . In tocopherol Antarctica allude monazite, iron, manganese and gold. Japanese researchers report that on the request Lutzow - Holm put together uracil ore . digging fleck anyplace in Antarctica is not performed.'