کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5782624 | 1637509 | 2017 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The chemical and isotopic compositions of volatiles in magmatic hydrothermal fluids beneath the Songliao Basin, northeastern China
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
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چکیده انگلیسی
Two types of magmatic hydrothermal volatiles were identified in the study. Both types of volatiles are dominated by CO2. CO2 in type I volatiles shows more negative δ13C values (â 13.8â° to â 9.7â°) than typical magmatic CO2, which likely resulted from carbon isotopic fractionation during magma degassing. Type II volatiles have higher δ13C values (â 5.5â° to â 3.3â°) and are similar to typical magmatic CO2. Small amounts of hydrocarbons were observed in both types of magmatic hydrothermal fluids. Hydrocarbons in type I volatiles have relatively high δ13CCH4 values (â 30.6â° to â 24.1â°) and reversed carbon isotopic trends while hydrocarbons in type II volatiles have more negative δ13CCH4 values (â 49.7â° to â 37.6â°) and orderly carbon isotopic trends. CO2 in hydrothermal fluids is a potential source for CO2 gas accumulations. Hydrocarbons in hydrothermal fluids, however, can hardly make significant contributions to the commercial gas reservoirs due to their low concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Geology - Volume 465, 20 August 2017, Pages 11-20
Journal: Chemical Geology - Volume 465, 20 August 2017, Pages 11-20
نویسندگان
Jinliang Gao, Jiaqi Liu, David R. Hilton, Fanchao Meng, Zhongping Li, Lina Zhai, Chunqing Sun, Lei Zhang,