کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4365186 1616339 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Karst development and sulfur deposit formation in the Ordos Basin: The role of bacterial sulfate reduction
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
پیش نمایش صفحه اول مقاله
Karst development and sulfur deposit formation in the Ordos Basin: The role of bacterial sulfate reduction
چکیده انگلیسی
Bacterial sulfate reduction is significant for the karst development and pyrite formation within the Ordovician weathering crust in the Ordos Basin of China. Bacterial communities were studied to determine their potential geomicrobiological functioning by constructing 16S rRNA clone library for in situ samples. The results showed that 147 positive clones sequenced were divided into 23 operational taxonomic units (OTUs), 8 OTUs accouting for 80% of all the selected clones belonged to the genus Desulfosporosinus. Bacterial sulfate reduction has been demonstrated to take place in the Ordovician by the classical hydrogeological information together with the stable sulfur isotope analysis from both the pyrite in the weathering crust and the products of the laboratory experiments on the dissolution of sulfate rock. The H2S produced by bacterial sulfate reduction combined with iron to form pyrite, resulting in the development of hypogenic karst in the weathering crust. This process provided a reasonable interpretation for karst development in the vicinity of sulfur deposits in the Ordos Basin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 76, January 2013, Pages 92-97
نویسندگان
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