کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5781996 1637141 2017 46 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fluid sources and stable isotope signatures in authigenic carbonates from the Northern Apennines, Italy
ترجمه فارسی عنوان
منابع سیال و امضاء ایزوتوپ پایدار در کربناتهای اتهیژنیک از آپنین شمالی، ایتالیا
کلمات کلیدی
کربنات اتیژنیک، اشباع سرد، ایزوتوپ پایدار اکسیژن و کربن، سیستم نفت، مهاجرت متان، آب اتصال
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی
The different carbon sources that fed the investigated carbonates were identified and include: thermogenic methane from the deep Miocene reservoirs, 13C-enriched CO2 derived from secondary methanogenesis and microbial methane from Pliocene successions buried in the Po Plain. The δ13C variability documented among samples from a single outcrop testifies that the authigenic carbonates might represent a record of varying biogeochemical processes in the hydrocarbon reservoirs. The sources of stable oxygen isotopes in authigenic carbonates are often ascribed to marine water. Oxygen isotopic fractionation in the dolomite cements indicates that marine pore water couldn't be the sole source of oxygen. δ18O values provide a preliminary evidence that connate waters had a role in the carbonates precipitation. The concomitant occurrence of active cold seepages and fossil record of former plumbing systems suggests that generation and migration of hydrocarbons are long-lasting and very effective processes along the Northern Apennines foothills.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine and Petroleum Geology - Volume 86, September 2017, Pages 606-619
نویسندگان
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