Geochemistry and geochronology of acidic rocks in the Beishan region, NW China: Petrogenesis and tectonic implications
The dacites and granites from the Beishan region are characterized by highly-fractionated REE, enrichments in LILE, and depletion in Nb, Ta and Sr. The dacites contain zircons with ages ranging from 265 to 748Ma. These features suggest that they were probably derived from the older lower continental crust and were later on subjected to significant crustal assimilation. The rhyolites, diorites and diabases, all of which share similar geochemical features such as trace element patterns, zircon...[Show more]
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|Source:||Journal of Asian Earth Sciences|
|01_Su_Geochemistry_and_geochronology_2011.pdf||2.52 MB||Adobe PDF||Request a copy|
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