Mathematics – Logic
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986rpesc...8...53k&link_type=abstract
In its USSR Report: Earth Sciences (JPRS-UES-86-001) p 53 (SEE N86-20887 11-42) Transl. into ENGLISH from Izvestiya Akademii Na
Mathematics
Logic
Antarctic Regions, Geomorphology, Meteorite Craters, Mineralogy, Ross Ice Shelf, Geochemistry, Geochronology, Mineral Deposits, Planetary Craters, Structural Properties (Geology)
Scientific paper
Morphological and mineralogical information indicates that there are two structures on the Ross Sea shelf which may be of a meteoritic origin. The crater has a diameter of about 100 km and the wall rises as much as 800 m above the bottom. The Bauers annular structure corresponds to a concentric system of gravity anomalies with positive delta g values for horsts and netative values for grabens, as is typical for meteoritic structures. The clear expression of the crater in the relief, the fact that it is superposed on the present-day continental slope and is filling with thick strata of recent sediments are indicative of its youth. A meteorite explosion logically explains a number of contradictory facts concerning the geological history of the Ross Sea, especially the 300 km northward jump of the boundary of iceberg drift and cold-loving fauna in the ocean and the simultaneous interglacial and lush development of fauna in the Ross Sea 5 to 3 million years ago. After formation of the crater the waters of the Ross Sea for some time became warmer and the surrounding ocean became colder due to the thawing of ice transported from the Ross Sea ice shelf.
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