نتایج جستجو برای: precambrian

تعداد نتایج: 1427  

Journal: :Memoirs of the Faculty of Science, Kyūsyū University. Series D, Geology 1970

2003
D.A.D. Evans

It has recently been found that Neoproterozoic glaciogenic sediments were deposited mainly at low paleolatitudes, in marked qualitative contrast to their Pleistocene counterparts. Several competing models vie for explanation of this unusual paleoclimatic record, most notably the high-obliquity hypothesis and varying degrees of the snowball Earth scenario. The present study quantitatively compil...

Journal: :Journal of Marine Science and Engineering 2023

Stromatolites, among the earliest fossils in Earth’s history, are widely distributed on margins of North China Precambrian carbonate platform. The formation processes stromatolites reveal biomineralization and evolution early life Precambrian. well-preserved stromatolitic dolostones recorded Ganjingzi Formation developed around Yuanjiagou village, southern Liaoning Province. morphology manifest...

Journal: :Rapport Grønlands Geologiske Undersøgelse 1966

Journal: :The UW National Parks Service Research Station Annual Reports 1998

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