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《EARTH SCIENCE-JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES》 2000-03
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PETROLOGY AND DATING OF NEO-ARCHAEAN INTRUSIVE ROCKS FROM GUYANG AREA, INNER MONGOLIA

Zhang Weijie Li Long Geng Mingshan (Faculty of Earth Sciences and Mineral Resources, China University of Geosciences, Beijing100083, China)  
A suite of Neo_Archaean tonalitic_trondjemites_granodioritic intrusive rocks composed mainly of diorites, quartz diorites, and tonalites are discovered in Guyang district, Inner Mongolia through the regional mapping. Although these intrusive rocks have been metamorphosed to some extent, their relatively perfect appearances quite different from those of the Archaean gray gneisses can still be observed. These rocks within the calc_alkali series are a part of the TTG rock series. The isotopic dating indicates that the age of the rocks at 2?400-2?500?Ma, i.e. at the end of Neo_Archaean.
【Fund】: 地质矿产部“内蒙古固阳地区三幅 1∶5万联测”项目
【CateGory Index】: P588.12
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