| 泥火山——天然气水合物存在的活证据 |
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| 引用本文： | 沙志彬,张光学,梁金强,王宏斌.泥火山——天然气水合物存在的活证据[J].南海地质研究,2005(1):48-56. |
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| 作者姓名： | 沙志彬 张光学 梁金强 王宏斌 |
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| 作者单位： | 广州海洋地质调查局,广州510760 |
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| 摘 要： | 海底天然气水合物大多与通过切穿沉积盖层的断裂的上升烃类流体相关，这些高渗透带包括泥火山和底辟等侵入构造，所以泥火山、底辟和海底断裂等构造周围可能赋存水合物；实际钻探结果也证实，泥火山和水合物的形成与聚集有较为密切的关系。泥火山，它是地层内部圈闭气体由于压力释放上冲的结果，也是气体向上运移的通道。文章初步总结了泥火山与水合物的成矿关系，认为泥火山是水合物赋存的标志之一，是水合物存在的活证据。本文对我国泥火山与水合物的发育和赋存进行了分析预测，并对泥火山构造中水合物的成矿模式进行了初步探讨。
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| 关 键 词： | 泥火山 天然气水合物 成矿模式 |
Mud Volcano--One Live Evidence of The Existence of Gas Hydrates |
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| Authors: | Sha Zhibin Zhang Guangxue Liang Jinqiang Wang Hongbin |
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| Institution: | Guangzhou Marine Geological Survey , Guangzhou, 510760 |
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| Abstract: | Marine gas hydrates are mostly related to the lifting hydrocarbon flow through the various fractures in the sediment. The intrusion--related structures such as the mud volcano and the diapir are also the high permeable zone of fluid flow. So there are potentially distributed marine gas hydrates around the mud volcano, the diapir and fault fracture. Results of drilling are proved that there are close relationships between the form and accumulation of gas hydrates and mud volcano. The mud volcano can be regarded as the result of the pressure of inner gases upthrusted from the lower strata, and the migration of gases from deeper strata. The mineralization relationships between the gas hydrates and the mud volcano are summarized in primary in this paper, which suggest that mud volcano is one of the signs and alive evidence of the existence of gas hydrates. The mud volcano and gas hydrates are predicted in China. In addition, the mineralization model of gas hydrates in the structure of mud volcano are construed in this paper. |
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| Keywords: | Mud volcano Gas hydrates Mineralization model |
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