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			<titleStmt><title level='a'>PROVENANCE OF THE UPPERMOST CARBONIFEROUS–LOWER TRIASSIC SANDSTONES, BOGDA MOUNTAINS, NW CHINA: IMPLICATION ON THE LATE PALEOZOIC TECTONIC HISTORY OF THE SOUTHERN CENTRAL ASIAN OROGENIC BELT</title></titleStmt>
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				<publisher>Geological Society of America</publisher>
				<date>01/01/2024</date>
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				<bibl> 
					<idno type="par_id">10634381</idno>
					<idno type="doi">10.1130/abs/2024AM-401642</idno>
					
					<author>Wan Yang</author><author>Sixuan Wu</author><author>Missouri_University_of_Science_and_Technology</author>
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			<abstract><ab><![CDATA[The Permian-Triassic time is a significant stage in the Paleozoic continental amalgamationand Cenozoic orogenic reactivation of southern Central Asian Orogenic Belt (CAOB).Field, petrographic, and detrital zircon U-Pb geochronological data of the uppermostCarboniferous–Lower Triassic sandstones from 3 sections in Bogda Mountains, greaterTurpan-Junggar basin, NW China, are used to decipher the tectonic history. The sectionsare Tarlong-Taodonggou (TT) and Zhaobishan (ZBS) in the south and Dalongkou (DLK) inthe north, 100 km apart and ~7,000 m in total thickness. Four petrofacies of 229sandstones and U-Pb dates of 3505 zircons of 35 sandstones form the basis forinterpretation. During Gzhelian–Asselian, andesite and basalt are the major sourcelithologies in TT. Zircon ages peak at ~300 Ma. During Sakmarian–Kungurian, basalt andandesite are the main source rocks in TT and ZBS; and zircon ages of both areas peak at~300 Ma. The Roadian–Wordian is represented by a regional unconformity. TheGuadalupian source lithology and zircon date show a major change. Andesite is thecommon and rhyolite and basalt the minor source lithologies for TT and DLK; but rhyolitefor ZBS. A unimodal peak at ~305 Ma occurs in TT; but two peaks at 305 and 455 Ma withcommon Precambrian dates in ZBS; and peaks of 310–295 Ma in DLK. DuringWuchiapingian–mid Olenekian, andesite and rhyolite are the common source lithologies forTT and DLK; but rhyolite as the primary volcanic lithology for ZBS. In TT, Wuchiapingian-Induan samples have a major age peak at ~300 Ma, and an Olenekian sample has twopeaks at ~300 and ~450 Ma. In ZBS, the age pattern is similar to that of the Guadalupiansample. In DLK, samples have a major peak at ~310 Ma and a minor peak at ~450 Ma.The comparable age clusters identified by multi-dimensional scaling indicate that NorthTianshan is the source for TT and ZBS during the latest Carboniferous–early Permian. Butin mid Permian, south Central Tianshan became the main source solely to ZBS. Duringlate Permian–Early Triassic, both north and central Tianshan became the common sourcesto all three areas due to enhanced denudation. The source change in mid-Permian acrossa regional unconformity is synchronous with Paleo-Asian Ocean closure and arc-continentand continent-continent collisions, which occurred along the southern margin of Turpan-Junggar basin no later than Guadalupian.]]></ab></abstract>
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