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Author : Vladimír Zoubek,Helena Klenerová,Geologický ústav (République tchèque).
Publisher : Unknown
Page : 142 pages
File Size : 55,6 Mb
Release : 1971
Category : Geology
ISBN : UOM:39015046044189
Author : Anonim
Publisher : Unknown
Page : 186 pages
File Size : 54,5 Mb
Release : 1971
Category : Geology
ISBN : UCAL:$B3542
Author : Anonim
Publisher : Unknown
Page : 946 pages
File Size : 43,8 Mb
Release : 1972
Category : Aeronautics
ISBN : MINN:31951000607681M
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Anonim
Publisher : Unknown
Page : 344 pages
File Size : 41,9 Mb
Release : 1978
Category : Geophysics
ISBN : UCSD:31822009656836
Author : Environmental Science Information Center. Library and Information Services Division
Publisher : Unknown
Page : 582 pages
File Size : 53,9 Mb
Release : 1977
Category : Electronic
ISBN : IND:30000105034924
Author : Environmental Science Information Center. Library and Information Services Division
Publisher : Unknown
Page : 578 pages
File Size : 42,6 Mb
Release : 1977
Category : Earth sciences
ISBN : UOM:39015007489944
Author : Anonim
Publisher : Unknown
Page : 94 pages
File Size : 49,6 Mb
Release : 1972
Category : Earth
ISBN : UVA:X004199346
Author : European Seismological Commission. Working Group on Statistical Methods
Publisher : Unknown
Page : 84 pages
File Size : 44,8 Mb
Release : 1978
Category : Seismology
ISBN : STANFORD:36105017478772
Author : International Upper Mantle Committee
Publisher : Unknown
Page : 382 pages
File Size : 55,6 Mb
Release : 1964
Category : Upper mantle project
ISBN : STANFORD:36105032211067
Author : I.I. Rokityansky
Publisher : Springer Science & Business Media
Page : 394 pages
File Size : 49,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642618017
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.
Author : Environmental Science Information Center. Library and Information Services Division
Publisher : Unknown
Page : 512 pages
File Size : 47,7 Mb
Release : 1977
Category : Book catalogs
ISBN : MINN:30000010404568
Author : F. Barker
Publisher : Elsevier
Page : 676 pages
File Size : 53,6 Mb
Release : 2013-10-22
Category : Nature
ISBN : 9781483289601
Developments in Petrology, 6: Trondhjemites, Dacites, and Related Rocks focuses on the geology, geochemistry, and petrology of several kinds of trondhjemites, dacites, and genetically related rocks. The selection first elaborates on the definition, environment, and hypotheses of origin of trondhjemite; a review of the mineralogy and chemistry of tertiary-recent dacitic, latitic, rhyolitic, and related salic volcanic rocks; and some trace elements in trondhjemites and their implications to magma genesis and paleotectonic setting. Discussions focus on tectonic environments and trace element patterns, selection and reliability of trace elements, interrelationships between mineralogy and chemistry, and regional variations of dacitic and rhyolitic magmas. The publication then tackles strontium isotope geochemistry of late Archean to late Cretaceous tonalites and trondhjemites; Archean gray gneisses and the origin of the continental crust in West Greenland; and metamorphic development of early Archean tonalitic and trondhjemitic gneisses in Saglek Area, Labrador. The book examines the petrology, geochemistry, and origin of the Sparta quartz dioritetrondhjemite complex; reconnaissance geochemistry of Devonian island-arc volcanic and intrusive rocks in West Shasta District, California; and origin of the Twillingate trondhjemite in North-Central Newfoundland. The selection is highly recommended for geologists and geochemists wanting to explore trondhjemites, dacites, and genetically related rocks.
Author : M. Suk
Publisher : Elsevier
Page : 324 pages
File Size : 47,9 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483291871
Reviews Central European opinions about the origin and formation of metamorphic rocks and their genetic systems, incorporating the works of such distinguished European scientists as Rosenbusch, Becke, Niggli, Sander, Eskola, Barth and others with present-day knowledge and the results of Soviet and American investigations.
Author : United States. National Environmental Satellite, Data, and Information Service. Library and Information Services Division
Publisher : Unknown
Page : 606 pages
File Size : 54,8 Mb
Release : 1983
Category : Electronic
ISBN : STANFORD:36105133452669
Author : Environmental Science Information Center. Library and Information Services Division
Publisher : Unknown
Page : 16 pages
File Size : 45,6 Mb
Release : 1983
Category : Ecology
ISBN : MINN:30000010404246
