| 王国晨,白耀楠,李艳晨,安雪景,韩博,李状.断裂构造与岩性组合共同控制下的板内地热系统差异演化:来自怀来盆地的证据[J].矿产勘查,2026,17(4):593-603 |
| 断裂构造与岩性组合共同控制下的板内地热系统差异演化:来自怀来盆地的证据 |
| Differential evolution of intraplate geothermal systems governed by fault structures and lithologic associations: Evidence from the Huailai Basin |
| 投稿时间：2025-11-10 |
| DOI：10.20008/j.kckc.202604002 |
| 中文关键词: 地热系统 成因模式 水岩相互作用 水文地球化学 怀来盆地 |
| 英文关键词: geothermal system genetic model water-rock interaction hydrogeochemistry Huailai basin |
| 基金项目:本文受河北省地矿局科技项目(13000023P0069B410149R)、河北省自然资源厅科技项目(2013045656)联合资助。 |
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| 中文摘要: |
| 张家口怀来盆地位于华北克拉通构造活跃区，地热资源丰富。后郝窑与奚家堡两地热系统地理位置相近，但在地热特征上表现出显著差异，为研究板内地热系统的控制机制提供了理想案例。本文综合地质构造、水文地质、水化学与热储特征等多源数据，揭示了断裂构造与岩性组合对两地热系统差异演化的共同控制作用。研究结果表明，后郝窑地热系统受北西—南东向与北北西—北东东向断裂交汇控制，结合碳酸盐岩破碎带，形成高渗透性热对流系统，水化学类型为 SO4-Na型，温度达 80～90 ℃，热源主要来自深部岩浆活动。奚家堡地热系统则位于隆起带，受隐伏断裂与片麻岩-花岗岩接触带控制，热储以白云岩破碎带为主，水化学类型自补给区的 HCO3-Na·Mg型渐变为中心的 SO4-Na型，温度约 64 ℃。两地热系统的差异主要源于断裂连通性与岩性渗透性的非均质性。本研究为华北克拉通板内地热资源的勘探与可持续开发提供了理论依据。 |
| 英文摘要: |
| The Huailai Basin in Zhangjiakou is located in a tectonically active area of the North China Craton,rich in geothermal resources. The Houhaoyao and Xijiabao geothermal systems, despite their geographical proxim.ity, exhibit significant differences in geothermal characteristics, providing an ideal case for studying the controllingmechanisms of intraplate geothermal systems. This study integrates multi-source data, including geological struc.tures, hydrogeology, hydrochemistry, and thermal reservoir characteristics, to reveal the combined control of faultstructures and lithological combinations on the differential evolution of the two geothermal systems. The results indi.cate that the Houhaoyao geothermal system is controlled by the intersection of NW-SE and NNW-NEE trendingfaults, combined with fractured carbonate rock zones, forming a high-permeability thermal convection system. Itshydrochemical type is SO4-Na, with temperatures reaching 80-90 ℃, and the heat source is primarily derived fromdeep magmatic activity. In contrast, the Xijiabao geothermal system is located in an uplift zone, controlled by con.cealed faults and the contact zone between gneiss and granite. Its thermal reservoir is mainly composed of fractureddolomite zones, with the hydrochemical type transitioning from HCO3-Na·Mg in the recharge area to SO4-Na in the center, and a temperature of approximately 64 ℃ . The differences between the two geothermal systems primarilystem from the heterogeneity in fault connectivity and lithological permeability. This study provides a theoretical ba.sis for the exploration and sustainable development of intraplate geothermal resources in the North China Craton. |
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