Composition and genesis of the intrusive rock association of the Magloi magmatic area, the Central Amur region

被引：0
|
作者：
V. G. Gonevchuk
G. A. Gonevchuk
机构：
[1] Russian Academy of Sciences,Far East Geological Institute, Far East Division
来源：
Russian Journal of Pacific Geology | 2008年 / 2卷 / 1期
关键词：
magmatism; transform margin; Cretaceous period; Kharpi volcanic zone; Sikhote-Alin; Amur region;
D O I：
10.1007/s11720-008-1004-x
中图分类号：
学科分类号：
摘要：
New geochemical and isotopic-geochronological data are reported on the intrusive association from one of the largest and relatively poorly studied Cretaceous (Aptian-Cenomanian) magmatic zones of the Sikhote-Alin accretionary fold system. The new results and previously published studies were interpreted using concepts of a blocked (terrane) structure of the region and the different geodynamic nature of the magmatic complexes. It was shown that the “transitional” geochemical and geodynamic characteristics of the studied intrusive rocks can be explained in terms of magmatism along the transform continental margin. Additional complicating factors are the composition of the terrane rocks and the change in the geodynamic setting during the formation of the considered magmatic area (114-90 Ma).
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页码：39 / 53
页数：14
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