کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6384370 | 1626471 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
U/Th dating of cold-seep carbonates: An initial comparison
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: U/Th dating of cold-seep carbonates: An initial comparison U/Th dating of cold-seep carbonates: An initial comparison](/preview/png/6384370.png)
چکیده انگلیسی
Authigenic carbonates from hydrocarbon seeps are unique archives of past seepage and associated environmental parameters. In order to constrain the ages of a set of seep carbonates and the time involved in carbonate formation, we applied Uranium/Thorium (U/Th) dating to samples from the Gulf of Mexico, the Congo Fan, and the Black Sea. The resulting U/Th ages indicate that environmental conditions must have been favorable for enhanced methane-rich fluid seepage during the time intervals of 53.4 to 1.7 ka BP for the Gulf of Mexico and 45.5 to 3.0 ka BP for the Congo Fan. The seep carbonates from the Black Sea formed at 1.6 to 1.1 ka BP. Our results suggest that enhanced fluid flow during these time intervals was closely related to 1) sea-level variations associated with glacial/interglacial cycles and 2) environmental alterations in the course of Late Quaternary climate change, including variations in bottom-water temperatures that affected the stability of gas hydrate reservoirs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 57, Issues 21â23, November 2010, Pages 2055-2060
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 57, Issues 21â23, November 2010, Pages 2055-2060
نویسندگان
Dong Feng, Harry H. Roberts, Hai Cheng, Jörn Peckmann, Gerhard Bohrmann, R. Lawrence Edwards, Duofu Chen,