| 浙江省燕山期花岗岩的同位素地质年代问题 |
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| 引用本文： | 徐步台.浙江省燕山期花岗岩的同位素地质年代问题[J].地球化学,1984(3):217-225. |
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| 作者姓名： | 徐步台 |
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| 作者单位： | 浙江省地质科学研究所 |
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| 摘 要： | The available data on K-Ar dating of Yenshanian granites in Zhejiang Province have been summarized in the present paper. Based on K-Ar isochron ages of the granites, in conjunction with geological evidence, three episodes of granitic magmatic intrusion are distinguished as follows: the first episode--160--135 m.y., the second-130-110 m.y. and the third--105--65 m.y. Furthermore, the tempo-spacial distribution of K-Ar ages and their geotectonic implieations are also discussed.
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| 关 键 词： | 花岗岩 同位素地质年代 区域地质构造 岩浆活动 |
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