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
收藏
页码：543 / 552
页数：10
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