Offshore and onshore lithostratigraphic nomenclature: Paleocene, Eocene, Oligocene and Miocene
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چکیده
منابع مشابه
Oligocene stratigraphy across the Eocene and Miocene boundaries in the Valley of Lakes (Mongolia)
Cenozoic sediments of the Taatsiin Gol and TaatsiinTsagaan Nuur area are rich in fossils that provide unique evidence of mammal evolution in Mongolia. The strata are intercalated with basalt flows. 40Ar/39Ar data of the basalts frame the time of sediment deposition and mammal evolution and enable a composite age chronology for the studied area. We investigated 20 geological sections and 6 fossi...
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Much of our knowledge of past ocean temperatures comes from the foraminifera Mg /Ca palaeothermometer. Several nonthermal controls on foraminifera Mg incorporation have been identified, of which vital effects, salinity, and secular variation in seawater Mg /Ca are the most commonly considered. Ocean carbonate chemistry is also known to influence Mg /Ca, yet this is rarely examined as a source o...
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ژورنال
عنوان ژورنال: Geological Survey of Denmark and Greenland (GEUS) Bulletin
سال: 2007
ISSN: 1904-4666,1604-8156
DOI: 10.34194/geusb.v12.4933