کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6438355 | 1638017 | 2014 | 47 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rare earth elements and neodymium isotopes in sedimentary organic matter
ترجمه فارسی عنوان
عناصر کمیاب زمین و ایزوتوپهای نئودیمیم در مواد آلی رسوبی
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
Overall, our results confirm that organic matter probably plays an important role in the oceanic REE budget, through direct scavenging and remineralization within the water column. Both the high REE abundances and the shape of shale-normalized patterns for leached SOM also suggest that OM degradation in sub-surface marine sediments during early diagenesis could control, to a large extent, the distribution of REE in pore waters. Benthic fluxes of organic-bound REE could hence substantially contribute to the exchange processes between particulates and seawater that take place at ocean margins. Neodymium isotopes could provide useful information for tracing the origin (terrestrial versus marine) and geographical provenance of organic matter, with potential applications in paleoceanography. In particular, future studies should further investigate the potential of Nd isotopes in organic compounds preserved in sedimentary records for reconstructing past variations of surface ocean circulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geochimica et Cosmochimica Acta - Volume 140, 1 September 2014, Pages 177-198
Journal: Geochimica et Cosmochimica Acta - Volume 140, 1 September 2014, Pages 177-198
نویسندگان
Nicolas Freslon, Germain Bayon, Samuel Toucanne, Sylvain Bermell, Claire Bollinger, Sandrine Chéron, Joel Etoubleau, Yoan Germain, Alexis Khripounoff, Emmanuel Ponzevera, Marie-Laure Rouget,