Ar and He isotopes in the Dovyren mafic-ultramafic intrusion

被引：0

作者：

Konnikov, EG ^{[1
]}

Prasolov, EM

Tokarev, IV

Kislov, EV

Orsoev, DA

机构：

[1] Russian Acad Sci, Inst Expt Mineral, Chernogolovka 142432, Russia

[2] All Russian Oceanol Geol Res Inst, St Petersburg 190121, Russia

[3] Russian Acad Sci, Inst Precambrian Geol & Geochronol, St Petersburg 199034, Russia

[4] Russian Acad Sci, Inst Geol, Ulan Ude 670047, Russia

来源：

GEOLOGIYA I GEOFIZIKA | 2002年 / 43卷 / 06期

关键词：

isotopes; helium; argon; fluids; contamination; layered intrusions;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The paper presents results of Ar and He isotopic studies in rocks and sulfide ores of the Late Precambrian Dovyren dunite-troctolite layered intrusion (Northern Baikal region). The He-3/He-4 and Ar-40/Ar-36 ratios in the intrusion are similar to those in other mafic intrusions in the continental crust, and the gases in fluid inclusions bear a significant crustal component. The lowest He-3/He-4 and Ar-40/Ar-36 ratios in sulfide ores hosted by the intrusion, about those in crustal fluids, indicate involvement of the latter in magmatic mineralization.

引用

页码：543 / 552

页数：10

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