کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4689781 1636090 2012 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of local sedimentary conditions on development of microbialites in the Oxfordian carbonate buildups from the southern part of the Kraków–Częstochowa Upland (South Poland)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Influence of local sedimentary conditions on development of microbialites in the Oxfordian carbonate buildups from the southern part of the Kraków–Częstochowa Upland (South Poland)
چکیده انگلیسی

During the Late Jurassic, the Kraków–Częstochowa Upland area was situated on a shelf that linked a shallow epicontinental basin with the Tethys Ocean. Locally, carbonate buildups of differentiated size and structure developed on this shelf. The buildups comprise different varieties of microbialites: leiolites, thrombolites and stromatolites of variable properties. Negative Ce anomalies and distinct enrichment in heavy rare earth elements present in all studied microbialites indicate that on the entire Late Jurassic shelf in the Kraków region the sea water was generally well oxygenated and comparable, as far as alkalinity is concerned, to the recent one. Differentiated development of microbialites was controlled by local sedimentary conditions, unrelated to distinct changes of sea water chemistry. It is likely that formation of microbialites was mainly dependent on the content of dissolved amino acids, colloidal organic matter or fine-grained nutrient suspension and the energy of sedimentary environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sedimentary Geology - Volumes 263–264, 1 July 2012, Pages 109–132
نویسندگان
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