Origin of light hydrocarbon gases from the Matsukawa geothermal area in Japan
作者： Yasuhiro Kiyosu , Noriko Asada , Yutaka Yoshida
DOI: 10.1016/S0009-2541(10)80034-8
关键词: Hydrocarbon 、 Isotope 、 Alkene 、 Abiogenic petroleum origin 、 Carbon dioxide 、 Mineralogy 、 Geothermal gradient 、 Methane 、 Environmental chemistry 、 Chemistry
摘要: Abstract Light hydrocarbon and isotope compositions of methane were analyzed in well steam samples from the Matsukawa vapour-dominated type geothermal system. Alkanes (C 1 -C 4 ) alkene 2 detected all samples. contents CO -type are slightly higher than those -H S-type steam. The composition relationship between methane/ethane ratio δ 13 C-value suggest that these light gases mixtures thermogenic abiogenic components. may be attributed to magmatic equilibrated with carbon dioxide at f o2 defined by fayalite-magnetite-quartz buffer (FMQ).
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