کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4747813 1359937 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Late Cretaceous palynofloras from the southern Laurasian margin in the Xigaze region, Xizang (Tibet)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Late Cretaceous palynofloras from the southern Laurasian margin in the Xigaze region, Xizang (Tibet)
چکیده انگلیسی

Palaeontology plays an indispensable role in interpreting the sedimentary and tectonic history of the convergence of India and Laurasia and its consequences. Hitherto, spores and pollen grains have not been used very much in this connection. In this paper, we consider the palynology of two sedimentary successions in Xizang (Tibet) that reflect the early stages of this convergence. One of these is near the town of Xigaze, in Xigaze County (the eastern site), and the other is in Zhongba County (the western site). The palynomorph assemblages from these sites are broadly comparable in being dominated by gymnosperm pollen taxa, especially Classopollis and Exesipollenites. Angiosperm pollen grains are more common at the eastern site, especially representatives of the genus Proteacidites. The assemblages are considered to be late Late Cretaceous (Santonian–Maastrichtian) in age and, in common with the lithologies from which they were recovered, reflect a hot, arid or semi-arid climate comparable to that prevailing in South China during this period.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cretaceous Research - Volume 29, Issue 2, April 2008, Pages 294–300
نویسندگان
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