By J. B. Anderson
The delicate Antarctic surroundings involves a heavily associated approach of the lithosphere, surroundings, cryosphere, hydrosphere and biosphere. adjustments during this approach have inspired worldwide weather, oceanography and sea point for many of Cenozoic time. The geological heritage of this zone as a result presents a distinct checklist of vital interactions one of the a variety of parts of the Earth approach. Antarctic Marine Geology is the 1st complete single-authored e-book to introduce scholars and researchers to the geological heritage of the quarter and the original techniques that take place there. learn literature at the sector is broadly disseminated, and before no unmarried reference has existed that offers this type of precis. The ebook 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 info for Antarctic Marine Geology
North to south): the Subtropical Front, Subantarctic Zone, Subantarctic Front, Polar Frontal Zone, and Polar Front (Fig. 32). Patterson and Whitworth (1990) recognize another zone, the Continental Zone, that includes water masses on the continental shelf. Four oceanic water masses are recognized south of the Polar Front: Antarctic Surface Water, Warm Deep Water, Circumpolar Deep Water, and Antarctic Bottom Water. Antarctic Surface Water originates near the continent and flows northward until it encounters Subantarctic Surface Water where it begins to sink and mix with intermediate water masses (Fig.
The predominant surface current in Antarctica is the East Wind Drift, also known as the Antarctic Coastal Current, which flows from east to west (counterclockwise) around the continent (Gordon 1971). S. Naval Oceanographic Office, 1960) and near the edge of the continental shelf (Carmack and Foster, 1975). Circulation, particularly bottom circulation, is generally weak because of the great depth of the Antarctic shelf. Bottom photographs, scattered current meter measurements, and the fine-grained nature of bottom sediments on the shelf attest to the sluggish nature of bottom currents on the shelf.
Rocks representing the Humboldt Orogeny are widespread and are exposed in the Humboldt Mountains of Queen Maud Land, and in Mac. Robertson Land (Fig. 2C). 1). Exposures in Queen Maud Land and in the southern Prince Charles Mountains were used to identify this orogeny (Fedorov and Hofmann, 1982; Grew, 1982; Lopatin and Semenov, 1982; Ravich, 1982b; Ravich and Fedorov, 1982; Tingey, 1982; 1991) (Fig. 2D). Grikurov (1982) believes that the Insel Orogeny was the last of the craton-building episodes of East Antarctic history, and that the East Antarctic craton essentially was stabilized by the Late Archean.
Antarctic Marine Geology by J. B. Anderson