کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4468765 1622343 2007 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stratigraphic reconstruction of the Ediacaran Yangtze platform margin (Hunan province, China) using a large olistolith
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Stratigraphic reconstruction of the Ediacaran Yangtze platform margin (Hunan province, China) using a large olistolith
چکیده انگلیسی

The southeast-facing slope of the Yangtze platform during deposition of the Ediacaran Doushantuo Formation included several submarine slides and olistostromes of regional extent. These platform margin-derived slides provide windows into the contemporaneous platform margin. This manuscript proposes a paleoenvironmental reconstruction and evolution of the Ediacaran Yangtze platform margin using facies analysis of one of these large-scale slide sheets, which transported shallow-marine platform facies. The base of the slide sheet shows dolomite, chert, evaporites, and phosphorites, lithological association with “tepee” structures and storm-induced microbreccia. Dolomitised limestones with current-related sedimentary structures overlie these facies. Thus, the Ediacaran Yangtze platform may have evolved from a shallow, rimmed platform with shallow, restricted, back-rim, basins developed on the margin to a wave-dominated, shallow subtidal platform. Sequence analysis applied to the slide sheet sediments allows relative dating of the sliding.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 254, Issues 1–2, 8 October 2007, Pages 123–139
نویسندگان
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