کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4466222 1622183 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The late early Cambrian microbial reefs immediately after the demise of archaeocyathan reefs, Hunan Province, South China
ترجمه فارسی عنوان
صخره های میکروبی قبرس کیمبرای بلافاصله پس از فروپاشی صخره های آرکه ای سیتان، استان هونان، جنوب چین
کلمات کلیدی
آرکایکسی ها، اواخر کامبرین اولیه، انقراض، صخره های میکروبی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


• We report a late early Cambrian reef transition from South China.
• The Qinxudong reefs are interpreted to be the most well-developed microbial reefs.
• The reef transition was accompanied by a decline in the diversity of metazoans.
• The transition was also accompanied by a reduction in the abundance of reefs.
• These were possibly related to late early Cambrian regression.

The archaeocyath-bearing reefs that first appeared in South China in the Atdabanian were last seen in the lower Toyonian (e.g., in the Tianheban and Jindingshan formations). The upper Toyonian–lower Amgan Qingxudong Formation of Hunan Province examined in this study includes large-sized reefs formed solely by calcimicrobes of Epiphyton, Kordephyton, Girvanella, Hedstroemia, and Renalcis. During the middle and upper Cambrian, small-scale stromatolite reefs were formed. The Qingxudong reefs are therefore interpreted to be the most well-developed microbial reefs of the post archaeocyath-bearing reefs in the late early Cambrian. The transition from archaeocyath-bearing to purely microbial reefs was caused by a decline in the diversity of metazoans, and was accompanied by a reduction in the abundance of reefs, possibly related in part to late early Cambrian regression. The late early Cambrian reefs of South China contain a well-preserved record of reef succession, and provide important insights into the factors that led to the demise of archaeocyath-bearing reefs and the subsequent long-lasting hindrances to the development of skeletal-dominated reefs during the middle and late Cambrian.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 407, 1 August 2014, Pages 45–55
نویسندگان
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