کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4749597 1414230 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biostratinomy of bivalves from Jurassic and Early Cretaceous lakes of NE China
ترجمه فارسی عنوان
استراتینومی زیستی دوکفه از دریاچه های ژوراسیک و کرتاسه اولیه NE چین
کلمات کلیدی
بیواستراتینومی؛ صدف‌های دوکفه‌ای؛ ژوراسیک؛ کرتاسه؛ ذخایر دریائی؛ چين
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
چکیده انگلیسی

Bivalves are comparatively rare elements of the benthic faunas of Jurassic and Early Cretaceous lakes of northeastern China. In the past, Arguniella and Sphaerium have been regarded as belonging to the communities that populated the offshore areas of lake Sihetun, represented by the Lower Cretaceous Yixian Formation of western Liaoning. A detailed biostratinomic analysis of these bivalves suggests, however, that they were introduced from marginal lake habitats where they were reworked by storms and occasionally were transported in suspension offshore. Some of these bivalves were dead and settled on the lake floor as single valves or articulated but opened valves (butterfly position). Others were transported alive but died on their arrival at the bottom due to inimical conditions caused by reduced oxygen levels. A similar interpretation is given for articulated valves of Ferganoconcha in thinly bedded siltstones of the Jurassic Daohugou Fossil Beds of Inner Mongolia, which were also carried alive by hyperpycnal flows to their burial site where they died due to lack of oxygen.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeoworld - Volume 25, Issue 3, September 2016, Pages 399–405
نویسندگان
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