陆缘地区天然气水合物成藏地质模式

杨木壮; 潘安定; 沙志彬

doi:10.3724/SP.J.1140.2010.06085

陆缘地区天然气水合物成藏地质模式

1 广州大学地理科学学院, 广州 510006;
2 广州海洋地质调查局, 广州 510760

基金项目:

国家自然科学基金项目(40746028)

国土资源部海洋油气资源与环境地质重点实验室项目(MRE200911)

详细信息

作者简介:
杨木壮(1965-),男,博士,教授,主要从事海洋地质与自然地理研究,E-mail:yangmz@21cn.net

中图分类号: P744.4
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出版历程
- 收稿日期: 2010-03-28
- 修回日期: 2010-07-12

GEOLOGICAL MODELS OF GAS HYDRATES DEPOSITS ALONG THE CONTINENTAL MARGIN

1 School of Geographical Sciences, Guangzhou University, Guangzhou 510006, China;
2 Guangzhou Marine Geological Survey, Guangzhou 510760, China

摘要

摘要: 天然气水合物的成藏与其所处地质构造环境密切相关,陆缘地区天然气水合物成藏地质模式可分为成岩型、构造型和复合型三类。成岩型水合物主要受沉积因素控制,成藏气体以浅层生物成因气为主,水合物大多呈分散状存在于相对渗透层中,丰度较低。构造型水合物主要受构造因素控制,由热成因气或者混合气从较深部位沿断裂、泥火山或其他通道快速运移至水合物稳定域而形成,水合物主要分布在构造活动带周围,丰度较高。复合型水合物同时受到成岩作用和构造作用控制,水合物主要分布在构造活动带周围的相对渗透层中。
- 成藏地质模式 /
- 天然气水合物 /
- 陆缘
Abstract: The formation of gas hydrates deposits is closely associated with its geological environment. The geological models of gas hydrates deposits in the continental margin can be grouped into three types, i.e. diagenetic, structural and complex models. The diagenetic hydrate is controlled by sedimentation, the gas is mainly biogenic and the hydrate is distributed in relatively penetrable beds with low saturation. The structural type of hydrates is controlled by tectonism, while the liquid saturated with gas migrated into hydrates stability zone, along faults, mud volcanoes, etc. The structural hydrate is mainly distributed around the structures with high saturation. The complex hydrate controlled by both sedimentation and tectonism occurs in penetrable beds around structures.
- geological models /
- gas hydrates /
- continental margin

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参考文献(7)

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