摘要
依据莺歌海盆地的实际地质和地球化学资料,讨论和剖析了该盆地CO2成因、CO2与氦含量的相关性、氦成因能否表征CO2成因、区域性火山活动、壳源型CO2气源丰度及资源量、高压对含钙砂泥岩热解的抑制作用和壳源CO2与邻区幔源CO2类比等问题。认为莺歌海盆地CO2主要属壳源岩石化学成因,只有少量的CO2属壳幔混合成因,与邻区(琼东南盆地东部和珠江口盆地西部)火山幔源成因CO2之间存在明显差异;莺歌海盆地CO2气源丰富,资源颇大。
In accordance with the real geology and geochemistry data of Yinggehai basin, the paper deeply discussed and analyzed these problems: the cause of CO\-2 formation in the basin, the correlation of CO\-2\|He, the identification of CO\-2 formation by the cause of He formation, regional volcanic activity, richness and resource of crust type CO\-2, the restriction of thermal decomposition of calcareous sandstone or calcareous mudstone under high pressure, and the comparison between crust source CO\-2 and neighbor mantle source CO\-2.
出处
《天然气地球科学》
EI
CAS
CSCD
2003年第5期412-415,共4页
Natural Gas Geoscience
关键词
莺歌海盆地
C02成因
氦成因
高压抑制
地球化学
同位素判识
Yinggehai Basin
The cause of CO_2 formation
The cause of He formation
Restriction under high pressure.
