کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6442747 1639939 2016 63 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sedimentation history of the Paleoproterozoic Singhbhum Group of rocks, eastern India and its implications
ترجمه فارسی عنوان
تاریخ رسوب سازی گروه پالئوپروتروزوییک سینگبوم سنگها، شرق هند و پیامدهای آن
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
In significant contrast, the overlying Dhalbhum Formation is dominated by finer clastics with much lower proportion of sandstones. The base of the terrestrial Dhalbhum Formation is a sequence boundary (unconformity). Sedimentary facies analysis clearly shows two broad facies association of terrestrial origin (fluvial and aeolian). The aeolian facies association overlies the fluvial facies association. The Dhalbhum sandstones show typical REE pattern of quartz dilution with lower concentrations compared to the mudstones. The Dhalbhum finer clastics mimic typical REE patterns resembling abundances in the continental crust. Rare earth element plots display a good match with Post-Archean Australian Shales (PAAS) including similar concentrations, steep negative slope for LREEs, negative Eu anomaly, and nearly flat HREES. The Singhbhum Paleoproterozoic succession is devoid of both chemical sediments and Paleoproterozoic glacial deposits in contrast to neighboring cratons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth-Science Reviews - Volume 163, December 2016, Pages 141-161
نویسندگان
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