东海盆地宝云亭花岗岩潜山的形成与演化过程：来自锆石U-Pb同位素年代学与岩石地球化学的约束

doi:10.3799/dqkx.2026.124

东海盆地宝云亭花岗岩潜山的形成与演化过程：来自锆石U-Pb同位素年代学与岩石地球化学的约束

doi: 10.3799/dqkx.2026.124

刘建斌¹,
李宁¹,
刘彬^2,3, ,,
赵洪¹,
周虎¹,
岳勇¹

1. 中海石油(中国)有限公司上海分公司, 上海 200335;
2. 长江大学地球科学学院, 湖北武汉 430100;
3. 非常规油气地质与工程湖北省工程研究中心, 湖北武汉 430100

基金项目:

“十四五”重大科技项目“潜山油气成藏理论与勘探关键技术（KJGG-2022-0302）、国家自然科学基金项目（42572055）

详细信息

作者简介:
刘建斌，男，1983年生，硕士，高级工程师，主要从事油气勘探、地震地质综合解释工作，邮箱： liujb4@cnooc.com.cn

通讯作者:
刘彬，男，1987年生，博士，教授，博士生导师，主要从事火成岩岩石学与地球化学、基岩潜山油气勘探等教学与研究工作，邮箱： binliu@yangtzeu.edu.cn

中图分类号: P588.121
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- 收稿日期: 2025-11-21
- 网络出版日期: 2026-05-13

Formation and Evolution Process of the Baoyunting Granite Buried Hill in the East China Sea Basin: Constraints from Zircon U-Pb Isotopic Geochronology and Petrogeochemistry

Liu Jian-Bin¹,
Li Ning¹,
Liu Bin^{2,3
, ,},
Zhao Hong¹,
Zhou Hu¹,
Yue Yong¹

1. Shanghai Branch of CNOOC (China) Ltd., Shanghai 200335, China;
2. School of Geosciences, Yangtze University, Wuhan 430100 China;
3. Hubei Engineering Research Center of Unconventional Petroleum Geology and Engineering, Wuhan 430100 China

摘要

摘要: 目前对于东海盆地宝云亭地区已钻遇花岗岩的形成时代、岩石成分、成因机制及其潜山演化历史仍缺乏深入的认识。本文通过宝云亭潜山两口关键探井中钻遇的花岗岩开展锆石U-Pb年代学与岩石地球化学的综合研究，确定宝云亭花岗岩的成因及其深部地球动力学背景，进而揭示宝云亭花岗岩潜山形成与演化过程。锆石LA-ICP-MS U-Pb同位素测年结果揭示，宝云亭潜山花岗岩的结晶年龄为106.9~108.8 Ma，花岗岩上部火山碎屑岩的形成时代为35.9~41.3Ma。宝云亭花岗岩体主要由花岗岩和花岗闪长岩组成，总体具有与高Sr/Y花岗岩或者埃达克质岩石类似的成分特征。综合岩石学和地球化学研究数据，可以确定宝云亭花岗岩的成因应该与早白垩世时期增厚下地壳范围内玄武质岩石的部分熔融有关。综合本文及区域上已有的多学科研究成果，可以判断宝云亭花岗岩体应该形成于早白垩世末期古太平洋板块俯冲回撤的构造背景中，并且东海盆地宝云亭花岗岩潜山的形成与演化至少经历了岩体形成期、岩体隆升与剥蚀期、岩体沉降期三个不同阶段。
- 花岗岩潜山 /
- 锆石U-Pb年龄 /
- 岩石成因 /
- 宝云亭 /
- 东海盆地
Abstract: Current understanding remains limited regarding the formation age, petrological composition, genetic mechanisms, and tectonic evolution of the granite encountered in the Baoyunting buried hill within the East China Sea Basin. This study presents an integrated zircon U-Pb geochronological and petrogeochemical investigation on granites from two key exploration wells in the Baoyunting area. Our objectives are to determine the petrogenesis and deep-seated geodynamic setting of these granites, and to further unravel their formation and evolution processes. Zircon LA-ICP-MS U-Pb dating reveals crystallization ages of 106.9~108.8 Ma for the Baoyunting granites, while the overlying pyroclastic rocks yield younger ages of 35.9~41.3 Ma. The granitic pluton primarily comprises granite and granodiorite, exhibiting geochemical affinities to high-Sr/Y granites or adakitic rocks. Combined petrological and geochemical evidence suggests that the Baoyunting granites originated from partial melting of basaltic rocks within a thickened lower crust during the Early Cretaceous. Integrating our results with regional multidisciplinary data, we propose that these granites formed in a tectonic setting associated with the PaleoPacific Plate slab rollback during the late Early Cretaceous. The evolution of the Baoyunting granite buried hill involved three distinct stages: 1) pluton emplacement,2) uplift-denudation, and 3) subsidence.
- Granite buried hill /
- Zircon U-Pb geochronology /
- Petrogenesis /
- Baoyunting /
- East China Sea Basin

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参考文献(43)

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东海盆地宝云亭花岗岩潜山的形成与演化过程：来自锆石U-Pb同位素年代学与岩石地球化学的约束

doi: 10.3799/dqkx.2026.124

作者简介:
刘建斌，男，1983年生，硕士，高级工程师，主要从事油气勘探、地震地质综合解释工作，邮箱： liujb4@cnooc.com.cn

通讯作者:
刘彬，男，1987年生，博士，教授，博士生导师，主要从事火成岩岩石学与地球化学、基岩潜山油气勘探等教学与研究工作，邮箱： binliu@yangtzeu.edu.cn

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Formation and Evolution Process of the Baoyunting Granite Buried Hill in the East China Sea Basin: Constraints from Zircon U-Pb Isotopic Geochronology and Petrogeochemistry

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留言板

东海盆地宝云亭花岗岩潜山的形成与演化过程：来自锆石U-Pb同位素年代学与岩石地球化学的约束

doi: 10.3799/dqkx.2026.124

作者简介: 刘建斌，男，1983年生，硕士，高级工程师，主要从事油气勘探、地震地质综合解释工作，邮箱： liujb4@cnooc.com.cn

通讯作者: 刘彬，男，1987年生，博士，教授，博士生导师，主要从事火成岩岩石学与地球化学、基岩潜山油气勘探等教学与研究工作，邮箱： binliu@yangtzeu.edu.cn

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Formation and Evolution Process of the Baoyunting Granite Buried Hill in the East China Sea Basin: Constraints from Zircon U-Pb Isotopic Geochronology and Petrogeochemistry

计量

出版历程

目录

作者简介:
刘建斌，男，1983年生，硕士，高级工程师，主要从事油气勘探、地震地质综合解释工作，邮箱： liujb4@cnooc.com.cn

通讯作者:
刘彬，男，1987年生，博士，教授，博士生导师，主要从事火成岩岩石学与地球化学、基岩潜山油气勘探等教学与研究工作，邮箱： binliu@yangtzeu.edu.cn