Computer Science
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpesc....q..38s&link_type=abstract
In its USSR Rept.: Earth Sci. (JPRS-UES-85-003) p 38-39 (SEE N85-19446 10-42) Transl. into ENGLISH from Tikhookeanskaya Geol.
Computer Science
Earth Mantle, Magma, Pacific Islands, Structural Properties (Geology), Tectonics, Vertical Motion, Asia, Crystallization, Earth Crust, Earth Planetary Structure, Gravity Anomalies, Melting
Scientific paper
The mechanism of magma movement is discussed and vertical movements of Kamchatka, Sakhalin and Japan are diagrammed and discussed. A comparison of deformations with gravitational anomalies shows that upward movements are accompanied by entry of masses into the crust, which is anomalous in structure, with current-conducting layers present at depths of 10 to 15 km. Magmatic activity in the region is manifested as gradual, discontinuous upward movement of magma melts with the formation in the base of the crust and in the upper mantle of zones of partial melting. The end products of differentiation of the melts reach the upper portions of the cross section or the crust where the magma apparently crystallizes rapidly. Injection of melts at various levels is accompanied by hydrochemical interaction of the melts with the surrounding rock, causing deformation of overlying layers.
Semakin V. P.
Sychev P. M.
Zakharov V. K.
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