Detrital U-Pb zircon and 40Ar/39Ar muscovite geochronology from Middle Pennsylvanian strata in the Anadarko Basin, Texas Panhandle, USA
نویسندگان
چکیده
The Late Mississippian-Permian Anadarko Basin formed in Texas and Oklahoma, USA as the result of inversion Neoproterozic Cambrian rift structures. Subsidence was driven by flexural loading Amarillo-Wichita Uplift, this uplift may represent easternmost element Ancestral Rocky Mountains system. northwestern part basin has generally been interpreted to have filled sediment derived from Front Range ~475 km northwest during early stages filling. We test model using U-Pb detrital zircon 40Ar/39Ar muscovite results three subsurface samples Morrow B sandstone Basin. provide a new maximum depositional age 310.9 ± 4.9 Ma that indicates be no older than late Atokan Desmoinesian Age (Moscovian), ~10 Myr younger previously interpreted. In contrast some previous interpretations, we propose most likely source for is Amarillo Uplift south. Detrital data peaks at 900–1300 Ma, 1370 1600–1800 corresponding derivation Grenville, Granite-Rhyolite Yavapai-Mazatzal basement provinces, respectively. A dominant peak suggests Mesoproterozoic granites were exposed Middle Pennsylvanian time, detritus eroded dominated lowstand budget Panhandle time; small volumes sourced Range. This study presents first geochronology Paleozoic southwestern Laurentia. presented here highlight interpretive power combined datasets.
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ژورنال
عنوان ژورنال: Palaeogeography, Palaeoclimatology, Palaeoecology
سال: 2021
ISSN: ['1872-616X', '0031-0182']
DOI: https://doi.org/10.1016/j.palaeo.2021.110573