|国家科技期刊平台
| 注册
首页|期刊导航|地质学报（英文版）|Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton: SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark, Beijing

Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton: SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark, Beijing

SHI Yuruo ZHAO Xitao MA Yinsheng HU Daogong LIU Qisheng WU Zhenhan ZHAO Yuanyi LIU Dunyi

地质学报（英文版）2009，Vol.83Issue(2)：310-320,11.
✕
地质学报（英文版）2009，Vol.83Issue(2)：310-320,11.

Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton: SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark, Beijing

Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton: SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark, Beijing

SHI Yuruo 1ZHAO Xitao 2MA Yinsheng 3HU Daogong 3LIU Qisheng 3WU Zhenhan 3ZHAO Yuanyi 4LIU Dunyi1

作者信息

  • 1. Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
  • 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
  • 3. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
  • 4. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
  • 折叠

摘要

Abstract

The Yunmengshan Geopark in northern Beijing is located within the Yanshan range. It contains the Yunmengshan hatholith, which is dominated by two phitons: the Yunmengshan gneissic granite and the Shicheng gneissic diorite. Four samples of the Yunmengshan gneissic granite give SHRIMP zircon U-Pb ages from 145 to 141 Ma, whereas four samples of the Shicheng gneissic diorite have ages from 159 Ma to 151 Ma. Dikes that cut the Yunmengshan diorite record SHRIMP zircon U-Pb age of 162±2 and 156±4 Ma. The cumulative plots of zircons from the diorites show a peak age of 155 Ma, without inherited zircon cores, and the peak age of 142 Ma for granite is interpreted as the emplacement age of the Yunmengshan granitic pluton, whose igneous zircons contain inherited zircon cores. The data presented here show that there were two pulses of magmatism: early diorites, followed c13 Ma later by true granites, which incorporated material from an older continental crust.

关键词

SHRIMP zircon U-Pb age/Yunmengshan Geopark/North China Craton

Key words

SHRIMP zircon U-Pb age/Yunmengshan Geopark/North China Craton

分类

天文与地球科学

引用本文复制引用

SHI Yuruo,ZHAO Xitao,MA Yinsheng,HU Daogong,LIU Qisheng,WU Zhenhan,ZHAO Yuanyi,LIU Dunyi..Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton: SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark, Beijing[J].地质学报（英文版）,2009,83(2):310-320,11.

基金项目

This study is financially supported by the National Natural Science Foundation of China(no.:40703012),the Basic Outlay of Scientific Research Work from the Ministry of Science and Technology of the People's Republic of China(no.:J0809), and Miyun Tourism Administration for the Yunmengshan NationalGeopark. （no.:40703012）

地质学报（英文版）

OACSCD

1000-9515

访问量0
|
下载量0
段落导航相关论文