کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4726776 1356346 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Developing a radiometrically-dated chronologic sequence for Neogene biotic change in Australia, from the Riversleigh World Heritage Area of Queensland
ترجمه فارسی عنوان
توسعه یک توالی زمان بندی رادیومتریک تاریخی برای تغییر نئوژن زیست شناختی در استرالیا از منطقه میراث جهانی رودخانه ای کوئینزلند
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی


• First application of the U/Pb speleothem chronometer to studies of biotic change
• First radiometric framework for correlating Australasian Miocene vertebrates
• Allows reliable correlation of changes in Miocene vertebrates with global climates

Radiometric U–Pb ages are presented for the Riversleigh World Heritage fossil mammal site in northwestern Queensland, Australia. The ages are determined on speleothems which are generally found in intimate or well-documented association with fossil remains and thus can be assumed to record the age of the latter with a high degree of confidence. The new ages encompass the early (18.2–16.5 Ma) and middle Miocene (15.1–13.5 Ma) deposits at Riversleigh in addition to the younger Rackham's Roost Site which returns early Pleistocene ages. Together, these provide a robust chronological framework for the interpretation of Neogene biotic change in Australia that has, until now, relied almost entirely upon biocorrelative techniques. In particular they permit closer investigation of links between other regions/faunas and allow comparison with other records of climatic and environmental change. This is the first documented example of a methodology that has widespread potential application across many continents and throughout much of Earth history.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gondwana Research - Volume 29, Issue 1, January 2016, Pages 153–167
نویسندگان
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