کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9463004 | 1314219 | 2005 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
δ18O and δ13C of Permian brachiopods: A record of seawater evolution and continental glaciation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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چکیده انگلیسی
The Permian interval is characterized by a relatively constant δ13C, at about 4â°. The exceptions are again the brachiopods from the Delaware Basin (Guadalupe Mountains), which show â¼Â 1.6â° increase in the Guadalupian, to values of up to 5.9â° in the Wordian. A tentative explanation, as in the case of oxygen, is based on the proposition that the semi-enclosed Delaware Basin was likely stratified, with sequestration of the 13C-depleted carbon to the deeper water layers and a complementary 13C enrichment in the upper oxygenated layer. The coeval open ocean water DIC may have been similar to that of the remainder of the Permian interval, at â¼Â 4â°, as indicated by whole rock carbonate samples from Oman, Sicily, and Iran. In the latest Permian, the trend mimics the well-known δ13C drop at the Permian/Triassic boundary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 224, Issue 4, 29 August 2005, Pages 333-351
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 224, Issue 4, 29 August 2005, Pages 333-351
نویسندگان
Christoph Korte, Torsten Jasper, Heinz W. Kozur, Ján Veizer,