Structure and composition of terrestrial crust in relation to problems of geological petrology
Afanas'yev, G.D.; Afanas'yev, G.D.; Institute of the Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, USSR Academy of Sciences
Журнал:
International Geology Review
Дата:
1971
Аннотация:
The geophysical evidence, including the physical mechanical data on rocks and minerals, proves insufficient for justification of currently popular ideas on the discrete character of “the crust” vs “the upper mantle,” the two types (“oceanic” and “continental”) of the crust, and the meaning of the Mohorovičić “boundary,” not to mention an abundance of other misconceptions. The terrestrial crust, mosaic in composition, is petrologically the same under oceans as under continents, notwithstanding geophysical differences between its “oceanic” and “continental” profiles. These differences are explainable by effects of pressure and temperature on geophysical images of the profiles, as well as by space-time positions of the crustal segments they represent.
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