By J. B. Anderson
The delicate Antarctic atmosphere contains a heavily associated procedure of the lithosphere, surroundings, cryosphere, hydrosphere and biosphere. alterations during this process have encouraged international weather, oceanography and sea point for many of Cenozoic time. The geological heritage of this zone accordingly offers a unique list of significant interactions one of the numerous parts of the Earth procedure. Antarctic Marine Geology is the 1st complete single-authored publication to introduce scholars and researchers to the geological historical past of the area and the original strategies that take place there. study literature at the area is greatly disseminated, and before no unmarried reference has existed that offers this kind of precis. The publication is meant as a reference for all scientists operating in Antarctica, and also will function a textbook for graduate classes in Antarctic marine geology.
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Extra resources for Antarctic Marine Geology
These subglacial basins are part of the Antarctic marine geologic realm. Given the paucity of outcrops on Antarctica and drill sites on the continental margin, information about the geologic history of the continent draws heavily on published descriptions of strata from contiguous Gondwana continents. This information is used to create a framework for predicting stratigraphic successions that should occur within marine and subglacial basins in Antarctica. This chapter is a summary of the geologic history of Antarctica in the context of its association with other Gondwana continents.
It is also a zone of high nutrient concentrations (Gordon and Molinelli, 1982). The dominant water mass in the Southern Ocean is Circumpolar Deep Water (CPDW) which is a mixture of waters formed in the Antarctic region and WDW flowing from the North Atlantic, Pacific, and Indian oceans (Fig. 33). South of the Polar Front, the boundary between CPDW and WDW is marked by a temperature maximum and oxygen minimum layer. The boundary between WDW and Antarctic Surface Water coincides with a temperature minimum layer (Fig.
Reconstruction of Gondwana during the Paleozoic showing the location of the Samfrau Geosyncline. Short lines indicate the "grain" of Precambrian-early Cambrian rocks (from Du Toit, 1937). from north to south, progressing from subgreenschist to blueschis (Aitkenhead, 1965; Elliot, 1966; Dalziel, 1982; Gledhill, Rex, and Tanner, 1982). The widespread unconformity originally postulated to separate the Andean and Gondwanian orogenies is not a consistent time plane along the continental margin and does not represent a significant change in tectonic processes (Storey, Thomson, and Meneilly, 1987).