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辉绿岩脉中的俘获锆石:地壳构造-热历史的"探针"——来自玉树混杂带辉绿岩俘获锆石的研究实例
引用本文:丁妍,杨天南,张洪瑞,王召林,薛万文,张玉宝.辉绿岩脉中的俘获锆石:地壳构造-热历史的"探针"——来自玉树混杂带辉绿岩俘获锆石的研究实例[J].岩石矿物学杂志,2011,30(3):438-448.
作者姓名:丁妍  杨天南  张洪瑞  王召林  薛万文  张玉宝
作者单位:1. 中国地质科学院,地质研究所,北京,100037
2. 有色金属矿产地质调查中心,北京,100012
3. 青海省地质调查院,青海,西宁,810012
基金项目:国家科技支撑计划项目,国家自然科学重点资助项目,973项目,中国地质调查项目
摘    要:结晶程度较低的基性岩如玄武岩、辉绿岩的岩浆锆石含量一般很低,不利于用锆石原位测年方法确定其成岩时代.但这类岩石可能含有俘获锫石,通过对俘获锫石的详细研究,可以推测基性岩浆通道周围地质体的演化历史,其作用如同穿越岩石圈上部的"探针".玉树混杂岩带为一晚古生代混杂带,由变质-变形陆源碎屑岩、玄武岩、辉绿岩及辉长岩侵入体组成...

关 键 词:辉绿岩  俘获锆石  年龄分布  玉树混杂带  构造亲缘性
收稿时间:2011/2/25 0:00:00
修稿时间:2011/4/12 0:00:00

Zircon xenocrysts in diabase dykes,a potential lithosphere probe for the thermo-tectonic evolution of the crust:a case study of zircon xenocrysts of diabase in Yushu Mélange
DING Yan,YANG Tian-nan,ZHANG Hong-rui,WANG Zhao-lin,XUE Wan-wen and ZHANG Yu-bao.Zircon xenocrysts in diabase dykes,a potential lithosphere probe for the thermo-tectonic evolution of the crust:a case study of zircon xenocrysts of diabase in Yushu Mélange[J].Acta Petrologica Et Mineralogica,2011,30(3):438-448.
Authors:DING Yan  YANG Tian-nan  ZHANG Hong-rui  WANG Zhao-lin  XUE Wan-wen and ZHANG Yu-bao
Institution:DING Yan1,YANG Tian-nan1,ZHANG Hong-rui1,WANG Zhao-lin2,XUE Wan-wen3 and ZHANG Yu-bao3(1.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China,2.China Non-ferrous Metals Resource Geological Survey,Beiing 100012,3.Qinghai Geological Survey,Xining 810012,China)
Abstract:Mafic rocks,especially those with low crystallization degree such as basalt and diabase,generally contain very rare zircon.It is thus not very easy to determine their rock-forming epochs by in-situ zircon U/Pb analysis.However,this kind of magmatic rock is likely to entrap numerous zircon xenocrysts in the rising process of magma,whose geochronology may provide valuable constrains on the tectonic evolution of the penetrated geological units.Such zircon-bearing mafic rocks play a role just like the role of l...
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