Geoelectromagnetic Investigation of the Earth’s Crust and Mantle

Geoelectromagnetic Investigation of the Earth’s Crust and Mantle
Author :
Publisher : Springer Science & Business Media
Total Pages : 394
Release :
ISBN-10 : 9783642618017
ISBN-13 : 3642618014
Rating : 4/5 (014 Downloads)

Book Synopsis Geoelectromagnetic Investigation of the Earth’s Crust and Mantle by : I.I. Rokityansky

Download or read book Geoelectromagnetic Investigation of the Earth’s Crust and Mantle written by I.I. Rokityansky and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical conductivity is a parameter which characterizes composition and physical state of the Earth's interior. Studies of the state equations of solids at high temperature and pressure indicate that there is a close relation be tween the electrical conductivity of rocks and temperature. Therefore, measurements of deep conductivity can provide knowledge of the present state and temperature of the Earth's crust and upper mantle matter. Infor mation about the temperature of the Earth's interior in the remote past is derived from heat flow data. Experimental investigation of water-containing rocks has revealed a pronounced increase of electrical conductivity in the temperature range D from 500 to 700 DC which may be attributed to the beginning of fractional melting. Hence, anomalies of electrical conductivity may be helpful in identitying zones of melting and dehydration. The studies of these zones are perspective in the scientific research of the mobile areas of the Earth's crust and upper mantle where tectonic movements, processes ofthe region al metamorphism and of forming mineral deposits are most intensive. Thus, in the whole set of research on physics of the Earth the studies of electrical conductivity of deep-seated rocks appear, beyond doubt, very important.

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