|本期目录/Table of Contents|

[1]侯晨阳,杨天水,石玉若.大别超高压变质带榴辉岩中金红石SHRIMP原位U-Pb定年及其年代学意义[J].地球科学与环境学报,2016,38(03):334-340.
　HOU Chen-yang,YANG Tian-shui,SHI Yu-ruo.In-situ SHRIMP U-Pb Dating of Rutiles in Eclogite from Dabie UHP Metamorphic Belt and Its Geochronological Significance[J].Journal of Earth Sciences and Environment,2016,38(03):334-340.
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大别超高压变质带榴辉岩中金红石SHRIMP原位U-Pb定年及其年代学意义(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第38卷
期数:
2016年第03期
页码:
334-340
栏目:
基础地质与矿产地质
出版日期:
2016-05-15

文章信息/Info

Title:
In-situ SHRIMP U-Pb Dating of Rutiles in Eclogite from Dabie UHP Metamorphic Belt and Its Geochronological Significance
文章编号:
1672-6561(2016)03-0334-07
作者:
侯晨阳; 杨天水; 石玉若
1.中国地质大学(北京) 地球科学与资源学院,北京100083;2.中国地质科学院地质研究所 北京离子探针中心,北京100037
Author(s):
HOU Chen-yang;  YANG Tian-shui;  SHI Yu-ruo
1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;2. Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
关键词:
年代学; 榴辉岩; 金红石; SHRIMP; U-Pb年龄; 封闭温度; 大别超高压变质带
Keywords:
eochronology;  eclogite;  rutile;  SHRIMP;  U-Pb age;  closure temperature;  Dabie UHP metamorphic belt
分类号:
P597
DOI:
-
文献标志码:
A
摘要:
对大别超高压变质带榴辉岩中金红石进行了SHRIMP原位U-Pb定年,得到金红石U-Pb年龄为(219±4)Ma, 与前人利用TIMS方法获得的金红石年龄结果在误差范围内是一致的,验证了金红石用于SHRIMP原位U-Pb定年的可行性。通过对比发现,不同赋存状态的金红石U-Pb年龄无明显差别。根据本次测得的年龄数据,结合前人的研究成果,金河桥榴辉岩中金红石的U-Pb年龄为冷却年龄,代表了大别超高压变质带构造折返阶段的时代。
Abstract:
In-situ SHRIMP U-Pb dating of rutile in eclogite from Dabie ultra-high pressure (UHP) metamorphic belt was studied. The U-Pb age of rutile obtained is (219±4)Ma, consistent with the previous TIMS results of rutiles within the error range. This consistence points to the feasibility of in-situ SHRIMP U-Pb dating of rutile. The dating results indicate no obvious differences for the U-Pb ages of rutiles from different occurrences. Taking together with the previous dating results, it is suggested that the U-Pb age of rutile in Jinheqiao eclogite is the cooling age, representing the tectonic exhumation time of Dabie UHP metamorphic belt.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-12-08
基金项目:国家自然科学基金项目(41173065);国土资源部公益性行业科研专项经费项目(201311116);中国地质科学院地质研究所基本科研业务费项目(J1403)
作者简介:侯晨阳(1990-),男,河北定州人,中国地质大学(北京)工学硕士研究生,E-mail:hcycugb@163.com。
通讯作者:石玉若(1975-),男,河南范县人,研究员,理学博士,E-mail:shiyuruo@bjshrimp.cn。
更新日期/Last Update: 2016-06-02