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青龙山榴辉岩高压变质新生锆石SHRIMP U-Pb定年、微量元素及矿物包裹体研究 被引量:9

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摘要 对青龙山一榴辉岩的锆石成因及年龄进行了综合研究,阴极发光(CL)显微图像显示该锆石无继承锆石核,其矿物包裹体成分及微量元素特征表明它是高压变质新生锆石,并获得该锆石的高精度离子探针(SHRIMP)平均U-Pb年龄为227.4±3,5Ma,该年龄给出了青龙山榴辉岩峰期变质时代的最佳估计。
出处 《科学通报》 CAS CSCD 北大核心 2004年第22期2329-2334,共6页 Chinese Science Bulletin
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