Uranium series dating of quaternary deposits

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Uranium—uranium dating is a radiometric dating technique which compares two isotopes of uranium U in a sample: uranium U and uranium U. It is one of several radiometric dating techniques exploiting the uranium radioactive decay series , in which U undergoes 14 alpha and beta decay events on the way to the stable isotope Pb. Other dating techniques using this decay series include uranium—thorium dating and uranium—lead dating. This decays with a half-life of 6. This isotope has a half-life of about , years. The next decay product , thorium Th , has a half-life of about 75, years and is used in the uranium-thorium technique.
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U-Series Dating

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Uranium Series Dating | SpringerLink

It is centred on volcanosedimentary rocks of the Late Triassic Nicola arc, which is endowed with significant porphyry copper-gold-molybdenum-silver deposits. About a third of the map area is underlain by Jurassic intrusions that cut deformed Nicola arc strata, mainly in the east. Volcano-sedimentary strata of both the Spences Bridge Group Early Cretaceous and Princeton Group Eocene unconformably overlie the early Mesozoic rocks, particularly in the western part of the map area. All Eocene and older rocks are faulted, tilted, and locally folded beneath scattered remnants of Miocene to Pleistocene Chilcotin Group and 'Valley basalts'. Rare occurrences of unnamed supraglacial volcanic spatter are limited to two areas, each less than metres in diameter, and are important examples of possibly the youngest subaerial volcanic rocks in British Columbia.
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Uranium Series Dating

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It is common practice in geographic literature to divide Asia into large regions, each grouping together a number of countries. Sometimes the Philippines , the Malay Archipelago , and peninsular Southeast Asia, instead of being considered part of South Asia, are grouped separately as Southeast Asia. Yet another variation of the basic categories is commonly made to divide Asia into its cultural regions. Northeastern Siberia comprises faulted and folded mountains of moderate height, such as the Verkhoyansk , Chersky , and Okhotsk-Chaun mountain arcs, all Mesozoic structures that have been rejuvenated by geologically recent tectonic events.
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