کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4728043 1356415 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Palynological biozones and radiometric data at the Carboniferous–Permian boundary in western Gondwana
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Palynological biozones and radiometric data at the Carboniferous–Permian boundary in western Gondwana
چکیده انگلیسی

Absolute radiometric data obtained recently in Upper Paleozoic basins of South America and Southern Africa are available to constrain the age of some palynological biozones defined in the Western Gondwana. Some dates obtained from Argentina coincide with southern Africa's and are useful to constrain the palynological associations. In this way, the Permian Argentinian Lueckisporites–Weylandites (LW) Biozone is compared with the Lueckisporites virkkiae Biozone of Brazil and Zone 3 of South Africa. On the other hand, the palynofloras from Dwyka (South Africa) are comparable with Argentinian and Brazilian associations recovered near the Carboniferous–Permian boundary. Tuffaceous intervals of the Dwyka Group in South Africa suggest the beginning of that sequence at 307 Ma reaching the 290 Ma at the top. The available palynological, paleoenvironmental and radiometric data from these three western Gondwanan areas are analyzed and compared.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gondwana Research - Volume 11, Issue 4, June 2007, Pages 529–536
نویسندگان
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