Titlebook: Exposed Cross-Sections of the Continental Crust; Matthew H. Salisbury,David M. Fountain Book 1990 Kluwer Academic Publishers 1990 Deformat

HEW

Major Thrust Faults and the Vertical Zonation of the Middle to Upper Proterozoic Crust in Central Aual zone [2] rocks. It is suggested that the granitic magmas formed by anatexis along the granulite- amphibolite metamorphic front. Rb-Sr ages show a wide scatter between 1.8–0.9 b. y. and may be interpreted in terms of different timing of thermal events in the Musgrave and Arunta blocks. However, in

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出血

An oblique cross section of Archean continental crust at the northwestern margin of Superior ProvincC/7.5 - 8.0 kb at Natawahunan Lake, and 9 kb close to the Thompson belt. P-T-t paths derived from these data indicate that the major source for heating during metamorphism was the intrusion and underplating of hot magmas. In combination with tectonic compression these magmas lead to crustal thickeni

减至最低

Myelin

Basaltic Composition Xenoliths and the Formation, Modification and Preservation of Lower Crustsaltic lower crust of convergent margins (as sampled in active island arcs) is problematic, due to possible wholesale lower crustal delamination, aided by segregation and upward migration of less dense melts leaving more dense residues, at convergent zones with structurally thickened crust. Both xen

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Average Composition of Lower and Intermediate Continental Crust, Kapuskasing Structural Zone, Ontarisemble Lewisian granulite and amphibolite models for many elements, however, the KSZ lower crust model is rather mafic compared with most granulite models. The intermediate composition of the LCC (SiO.=56 wt.%) shows close agreement with Taylor and McLennan’s (1985) LCC model for major elements but

深渊

Book 1990ing Zone, Fiordland and many others. It is our hope that this Volume will serve as a reference for Earth scientists who are trying to understand levels of the crust not normally exposed to view, as well as a point of departure for new research and a teaching aid to new entrants in this relatively ne

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1389-2185 tand levels of the crust not normally exposed to view, as well as a point of departure for new research and a teaching aid to new entrants in this relatively ne978-94-010-6788-1978-94-009-0675-4Series ISSN 1389-2185

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