琼东南盆地中央坳陷带岩浆活动及其双动力控制模式

doi:10.3799/dqkx.2026.091

琼东南盆地中央坳陷带岩浆活动及其双动力控制模式

doi: 10.3799/dqkx.2026.091

1. 中国地质大学海洋学院, 湖北武汉 430074;
2. 自然资源部第二海洋研究所, 海底科学与划界全国重点实验室, 杭州 310012;
3. 中国地质大学海洋地质资源湖北省重点实验室, 湖北武汉 430074

基金项目:

国家科技重大专项项目(No.2025ZD1402801).

详细信息

作者简介:
宋志斌(1999-)，男，博士研究生，主要从事大陆边缘构造演化和岩浆活动方面的研究.ORCID:0009-0008-4307-8998.E-mail:2202410462@cug.edu.cn

通讯作者:
任建业，ORCID:0000-0003-0780-651X.E-mail:jyren@cug.edu.cn

中图分类号: P736
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出版历程
- 收稿日期: 2025-11-17
- 网络出版日期: 2026-05-13

Magmatic Activity and Dual-Dynamic Control Model in the Central Depression Zone of the Qiongdongnan Basin

1. College of Marine Science and Technology, China University of Geosciences, Wuhan 430074, China;
2. Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;
3. Hubei Key Laboratory of Marine Geological Resources, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 琼东南盆地中央坳陷带属于超伸展盆地，表现为地壳强烈薄化和高热流特征，并经历活跃的岩浆作用，形成多期次、广泛分布的火成岩。本文基于覆盖全区3D地震数据，以独特的地震反射结构的识别、追踪、制图和分析为依据，系统开展中央坳陷带岩浆活动类型、特征和分布规律的研究，深入分析其发育的区域构造动力学背景。结果表明，研究区发育岩床、岩墙及岩盖等侵入体和以万户海山为代表的火山建造群及热液喷口。通过岩浆活动与围岩地层之间的关系，划分出五期岩浆活动幕，第三、四幕（15.97-5.7Ma）是岩浆活动集中发育时期。基于地壳拆离薄化程度的定量计算，结合前人对海南地幔柱的研究成果，探讨了琼东南盆地中央坳陷带岩浆活动的区域构造背景，建立了琼东南盆地地幔柱-板块运动双重动力控制的岩浆活动模式。
- 琼东南盆地 /
- 超伸展地壳 /
- 万户海山 /
- 海南地幔柱 /
- 火山建造
Abstract: The central depression zone of the Qiongdongnan Basin belongs to the hyper-extended basin, which is characterized by strong crustal thinning and high heat flow. It has experienced active magmatism and formed multi-stage and widely distributed igneous rocks. In this manuscript, based on the 3D contiguous seismic data covering the whole area, based on the identification, mapping, tracking, and analysis of unique seismic reflection structures, this study systematically investigates the types, characteristics, and distribution patterns of magmatic activities in the central depression zone, and conducts an in-depth analysis of the regional tectonic dynamics background underlying their development. The results show that the study area has developed intrusive bodies such as sills, dykes and laccoliths, and a wide range of volcanic architecture and hydrothermal vents represented by Wanhu seamount. Through the analysis of the relationship between magmatic activity and surrounding rock strata, five stages of magmatic activity are divided, among which the third and fourth stages (15.97-5.7Ma) are the most concentrated periods of magmatic activity. Based on the quantitative calculation of the thinning degree of crustal detachment, combined with the previous research results of Hainan mantle plume, the regional tectonic background of magmatic activity in the central depression zone of the Qiongdongnan Basin is discussed, and the magmatic activity model controlled by mantle plume-plate movement in the Qiongdongnan Basin is established.
- Qiongdongnan Basin /
- Hyperextended crust /
- Wanhu seamount /
- Hainan mantle plume /
- Volcanic architecture

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参考文献(50)

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琼东南盆地中央坳陷带岩浆活动及其双动力控制模式

doi: 10.3799/dqkx.2026.091

作者简介:
宋志斌(1999-)，男，博士研究生，主要从事大陆边缘构造演化和岩浆活动方面的研究.ORCID:0009-0008-4307-8998.E-mail:2202410462@cug.edu.cn

通讯作者:
任建业，ORCID:0000-0003-0780-651X.E-mail:jyren@cug.edu.cn

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Magmatic Activity and Dual-Dynamic Control Model in the Central Depression Zone of the Qiongdongnan Basin

计量

目录

留言板

琼东南盆地中央坳陷带岩浆活动及其双动力控制模式

doi: 10.3799/dqkx.2026.091

作者简介: 宋志斌(1999-)，男，博士研究生，主要从事大陆边缘构造演化和岩浆活动方面的研究.ORCID:0009-0008-4307-8998.E-mail:2202410462@cug.edu.cn

通讯作者: 任建业，ORCID:0000-0003-0780-651X.E-mail:jyren@cug.edu.cn

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出版历程

Magmatic Activity and Dual-Dynamic Control Model in the Central Depression Zone of the Qiongdongnan Basin

计量

出版历程

目录

作者简介:
宋志斌(1999-)，男，博士研究生，主要从事大陆边缘构造演化和岩浆活动方面的研究.ORCID:0009-0008-4307-8998.E-mail:2202410462@cug.edu.cn

通讯作者:
任建业，ORCID:0000-0003-0780-651X.E-mail:jyren@cug.edu.cn