Timing of the Cathaysia Block formation: Constraints from SHRIMP U-Pb zircon geochronology
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منابع مشابه
SHRIMP zircon U–Pb age constraints on Neoproterozoic Quruqtagh diamictites in NW China
The Neoproterozoic Quruqtagh Group in the Tarim Block, NW China, contains multiple diamictites in the Bayisi, Altungol, Tereeken, and Hankalchough formations. These diamictites may represent three or possibly four discrete glaciations, although evidence for a glacial origin of the Bayisi and Altungol diamictite is ambiguous. To constrain their age and duration, we dated three volcanic beds (V1,...
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Zircon (ZrSiO4) is the most commonly used mineral in U–Pb geochronology. Although it has proven to be a robust chronometer, it can suffer from Pb-loss or elevated common Pb, both of which impede precision and accuracy of age determinations. Chemical abrasion of zircon involves thermal annealing followed by relatively low temperature partial dissolution in HF acid. It was specifically developed ...
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ژورنال
عنوان ژورنال: Episodes
سال: 1997
ISSN: 0705-3797,2586-1298
DOI: 10.18814/epiiugs/1997/v20i3/008