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Analysis on the Genesis of the Siliceous Rocks in Qingchengzi Ore Field

详细信息

责任者：Dong Cunjie (Shenyang Geological Exploration Institute ; Liaoning Nonferrous Geological Exploration Bureau ; Shenyang 110121 ; China) ; Zhang Baochen
刊名：Mineral Resources and Geology
出版年：2010
卷期：24(2)
关键词：硅质岩 ; silicolite ; 辽宁 ; Liaoning Province
页码：p.166-171
图表：1 illus., 3 tablse, 12 refs.
分类号：0803
issnNo：ISSN1001-5663
isbnNo：CN45-1174/TD

摘要

SA" lang=EN-US> Lots of siliceous rocks have been discovered in Xiaotongjiapuzi, Yangshu deposit and other Au-Ag ore field in Qingchengzi area. Lots of study shows that there are lots of original fluid inclusions in these rocks, and the composition of the fluid inclusions are very similar with Indo-Chinese epoch granite. Rubidium strontium isochron and ⁴⁰Ar/³⁹Ar fast neutron activation geochronometry show that those Au-Ag deposits’ geologic age is 239.46±1.13 Ma. Study shows that these rocks are metasomatic silicated rocks. With the intrusive process of Indo-Chinese epoch granite, lots of magmatic hydrothermal fluid are compounded with groundwater and other waters and entered the bedding void.