Characters of North-West Mud Diapirs Volcanoes in South China Sea and Relationship between Them and Accumulation and Migration of Oil and Gas
HE Jia-xiong
ZHU You-hai
WENG Jung-nan
CUI Sha-sha
Abstract：It has geological and mode of occurrence differences between mud diapirs and mud volcanoes though the similar gene-sis and the characters of evolution and development. Mud diapirs in Yinggehai basin located in the central deep depression, ap-pesred on five north-west lines and had characters of low density, low wave velocity, high temperature and high pressure how-ever mud volcanoes in Southwest Taiwan basin located in the continental deep-water distract in the south depression and Tain-an-Kaohsiung distract in Taiwan. It located along the discordogenic fault and usually had calderas also sea floors. Mud diapirs and mud volcanoes had many styles of accompanying gas to be mainly of the mature-post mature eoaliferous gas and had abun-dence CO_2 and N_2 to be mainly of the inorganic-crustal CO_2. The mud formations were Miocene and Pliocene marine mud shales which was souce rocks, furthermore it made a effictive system with the channel and affiliated structures generated by mud dia-pirs and mud volcanoes, so it was a particular petroleum system controlling the distribution of oil and gas.
Keywords：Yinggehai basinSouthwest Taiwan basinmud diapirs/mud volcanoesgeology and geophysicsoil-gas accumula-tion and migration characters.
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 75-86 )