کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9528957 | 1637778 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Isotopic evidence for biogenic precipitation as a principal mineralization process in coastal gasohydrothermal vents, Punta Mita, Mexico
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In Punta Mita vents, almost all δ34S values measured in pyrite range from â 13.3â° to â 4.9â°, and δ13C values in calcite vary from 0â° to â 39â°. These results agree with the hypothesis that calcite and pyrite were deposited by mediation of microbial activity, caused by the coupled reactions of vent methane oxidation and marine sulphate reduction, and suggest that biomineralization prevails over abiotic precipitation processes in such coastal gasohydrothermal vents. The 14C ages obtained from carbonates, of approximately 40,000 years, may represent the minimum age for the methane that generates the carbonates in the vents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Geology - Volume 224, Issues 1â3, 15 December 2005, Pages 113-121
Journal: Chemical Geology - Volume 224, Issues 1â3, 15 December 2005, Pages 113-121
نویسندگان
Pura Alfonso, Rosa MarÃa Prol-Ledesma, Carles Canet, Joan Carles Melgarejo, Anthony E. Fallick,