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| 华北克拉通典型盆地热结构特征及对克拉通破坏热动力过程的启示 |
| Thermal Structure Characteristics of Typical Basins in the North China Craton and Their Implications for the Thermodynamic Processes of Craton Destruction |
| 投稿时间：2026-03-02 修订日期：2026-03-29 |
| DOI： |
| 中文关键词: 地热地质 华北克拉通 大地热流 岩石圈热结构 热流配分 克拉通破坏 |
| 英文关键词:Geothermal Geology North China Craton Terrestrial heat flow Lithospheric thermal structure heat flow partitioning Craton destruction |
| 基金项目:地球深部探测与矿产资源勘查国家科技重大专项（2024ZD1003601），福建省自然科学基金项目（2024J01205）和中国地质调查局地质调查项目（DD20221676） |
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| 中文摘要: |
| 华北克拉通作为全球克拉通破坏的典型案例，其深部热动力学过程与浅部资源富集的成因联系一直是地学界关注的焦点。西部陆块、中部造山带和东部陆块的典型盆地单元记录了华北克拉通的岩石圈热结构的空间分异过程。本文通过梳理华北克拉通大地热流与岩石热物性数据，分析了华北克拉通西部陆块鄂尔多斯盆地、中部造山带沁水盆地和东部陆块冀中坳陷典型盆地单元的大地热流分布，揭示了华北克拉通岩石圈热结构具有西厚东薄、西冷东热的横向非均匀性。结果显示，克拉通破坏并不局限于东部，中部造山带在地幔物质上涌的高热背景下活化形成裂谷，西部鄂尔多斯盆地边缘热流的升高指示了热侵蚀作用。相比于中西部，东部陆块现今高地幔热流占比和薄热岩石圈厚度，以及相近的热岩石圈厚度与地震学岩石圈厚度，指示了东部陆块完成了较为彻底的克拉通破坏过程，为渤海湾盆地提供了大量的地幔来热，形成了盆地内丰富的地热资源。 |
| 英文摘要: |
| The North China Craton, a global archetype of craton destruction, offers a prime opportunity to investigate the long-standing geoscientific question of how deep thermodynamic processes link to shallow resource enrichment. The typical basins within the Western Block, Central Orogenic Belt, and Eastern Block record the spatial differentiation of the lithospheric thermal structure beneath the craton. By compiling terrestrial heat flow and rock thermophysical property data, this study analyzes the heat flow distribution in representative basins: the Ordos Basin in the Western Block, the Qinshui Basin in the Trans-North China Orogen, and the Jizhong Depression in the Eastern Block. The findings reveal a distinct lateral heterogeneity in the lithospheric thermal structure, characterized by a thick, cold lithosphere in the west and a thin, hot lithosphere in the east. The results indicate that craton destruction was not confined to the east. The Trans-North China Orogen experienced reactivation and rifting under a high thermal regime driven by mantle upwelling. In the west, elevated heat flow along the margins of the Ordos Basin suggests the influence of thermal erosion. Compared to the Trans-North China Orogen and Western Block, the Eastern Block currently exhibits a higher proportion of mantle heat flow and a thinner thermal lithosphere. The close correspondence between its thermal and seismological lithospheric thicknesses implies that the Eastern Block has undergone a relatively complete process of craton destruction. This process supplied substantial mantle-derived heat to the Bohai Bay Basin, contributing to its rich geothermal resources. |
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