{"title":"日本松川地热区轻烃气体的成因","authors":"Yasuhiro Kiyosu , Noriko Asada , Yutaka Yoshida","doi":"10.1016/0168-9622(92)90007-W","DOIUrl":null,"url":null,"abstract":"<div><p>Light hydrocarbon and isotope compositions of methane were analyzed in well steam samples from the Matsukawa vapour-dominated type geothermal system. Alkanes (C<sub>1</sub>-C<sub>4</sub>) and alkene (C<sub>2</sub>) were detected in all samples. Light hydrocarbon contents of CO<sub>2</sub>-type steam are slightly higher than those of C0<sub>2</sub>-H<sub>2</sub>S-type steam. The isotope composition of methane and the relationship between methane/ethane ratio and <em>δ</em><sup>13</sup>C-value of methane suggest that these light hydrocarbon gases are mixtures of thermogenic and abiogenic components. The abiogenic hydrocarbon may be attributed to magmatic hydrocarbon gases equilibrated with carbon dioxide at <em>f</em><sub>O2</sub> defined by the fayalite-magnetite-quartz buffer (FMQ).</p></div>","PeriodicalId":100231,"journal":{"name":"Chemical Geology: Isotope Geoscience section","volume":"94 4","pages":"Pages 321-329"},"PeriodicalIF":0.0000,"publicationDate":"1992-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-9622(92)90007-W","citationCount":"0","resultStr":"{\"title\":\"Origin of light hydrocarbon gases from the Matsukawa geothermal area in Japan\",\"authors\":\"Yasuhiro Kiyosu , Noriko Asada , Yutaka Yoshida\",\"doi\":\"10.1016/0168-9622(92)90007-W\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Light hydrocarbon and isotope compositions of methane were analyzed in well steam samples from the Matsukawa vapour-dominated type geothermal system. Alkanes (C<sub>1</sub>-C<sub>4</sub>) and alkene (C<sub>2</sub>) were detected in all samples. Light hydrocarbon contents of CO<sub>2</sub>-type steam are slightly higher than those of C0<sub>2</sub>-H<sub>2</sub>S-type steam. The isotope composition of methane and the relationship between methane/ethane ratio and <em>δ</em><sup>13</sup>C-value of methane suggest that these light hydrocarbon gases are mixtures of thermogenic and abiogenic components. The abiogenic hydrocarbon may be attributed to magmatic hydrocarbon gases equilibrated with carbon dioxide at <em>f</em><sub>O2</sub> defined by the fayalite-magnetite-quartz buffer (FMQ).</p></div>\",\"PeriodicalId\":100231,\"journal\":{\"name\":\"Chemical Geology: Isotope Geoscience section\",\"volume\":\"94 4\",\"pages\":\"Pages 321-329\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0168-9622(92)90007-W\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Geology: Isotope Geoscience section\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/016896229290007W\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Geology: Isotope Geoscience section","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/016896229290007W","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Origin of light hydrocarbon gases from the Matsukawa geothermal area in Japan
Light hydrocarbon and isotope compositions of methane were analyzed in well steam samples from the Matsukawa vapour-dominated type geothermal system. Alkanes (C1-C4) and alkene (C2) were detected in all samples. Light hydrocarbon contents of CO2-type steam are slightly higher than those of C02-H2S-type steam. The isotope composition of methane and the relationship between methane/ethane ratio and δ13C-value of methane suggest that these light hydrocarbon gases are mixtures of thermogenic and abiogenic components. The abiogenic hydrocarbon may be attributed to magmatic hydrocarbon gases equilibrated with carbon dioxide at fO2 defined by the fayalite-magnetite-quartz buffer (FMQ).
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
