冲绳海槽沉积物干酪根特征

The characteristics of kerogen in cores from Okinawa Trough

本文采用元素分析、镜下观察、红外光谱、扫描电镜和热解分析等技术,分析了冲绳海槽柱状样中腐植酸、富里酸和干酪根的化学、物理特征,并探讨了它们之间的成因关系和干酪根类型。沉积物的产烃能力甚差,每吨沉积物仅能生成0.49～1.18kg烃类物质。

The chemical and physical properties of kerogen, humic and fulvic acids in cores from Okinawa Trough were studied by using elementary analyzer, micropetrological unit, infra-red spectroscopy, electron microscopy and pyrolytic analyzer. The results indicate that the variation of atomic ratio of H / C, N / C and O / C shows a good genetic relation between the humic substances and the kerogen, and that the type of kerogen is humus kerogen (III types).