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Geophysical and Geochemical Characters of Natural Gas Hydrate Occurence in Northern Continental Slope of South China Sea
Author(s): 
Pages: 620-626
Year: Issue:  4
Journal: Natural Gas Geoscience

Keyword:  南海北部陆坡天然气水合物地球物理地球化学;
Abstract: 南海北部陆坡海域具有十分有利的水合物生成和赋存的构造、沉积等条件,从地球物理勘探和地球化学勘探2个方面对近期南海北部陆坡的水合物勘探工作和成果进行了综述.南海北部陆坡水合物存在的地球物理证据主要包括:地震剖面出现BSR、阻抗空白带、速度及振幅结构(VAMP)异常等;地球化学证据有:沉积物孔隙水氢氧同位素、孔隙水离子浓度、酸解烃、自生矿物及碳硫同位素等地球化学指标的异常.这些证据显示南海北部陆坡的西沙、东沙和台西南等海域具有较好的水合物勘探前景.
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