The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau

dc.contributor.authorLaskowski, Andrew K.
dc.contributor.authorOrme, Devon A.
dc.contributor.authorCai, Fulong
dc.contributor.authorDing, Lin
dc.date.accessioned2020-01-21T19:46:16Z
dc.date.available2020-01-21T19:46:16Z
dc.date.issued2019-09-19
dc.description.abstractLate Cretaceous trench basin strata were deposited in the subduction zone that consumed Neo-Tethyan oceanic lithosphere along the southern margin of the proto–Tibetan Plateau. We conducted detrital zircon (DZ) U-Pb geochronology on six trench basin samples (n = 1716) collected near Dênggar, Tibet (∼500 km west of Lhasa), to assess the provenance of these rocks and reconstruct Late Cretaceous sediment transport pathways. They contained DZ ages that point to a unique source around Lhasa city, north of the Late Cretaceous Gangdese magmatic arc. The modern Lhasa River catchment contains the requisite sources, and its main trunk transects the Gangdese magmatic arc, joining with the Yarlung River at a barbed junction at the India-Asia suture. We infer that the Lhasa River is an ancient feature that transported sediment to the subduction zone in Late Cretaceous time and persisted during India-Asia collision.en_US
dc.identifier.citationLaskowski, Andrew K., Devon A. Orme, Fulong Cai, and Lin Ding. "The Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateau." Geology (September 2019). DOI:10.1130/G46823.1.en_US
dc.identifier.issn1943-2682
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/15811
dc.language.isoen_USen_US
dc.rightsCC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/legalcodeen_US
dc.titleThe Ancestral Lhasa River: A Late Cretaceous trans-arc river that drained the proto-Tibetan Plateauen_US
dc.typeArticleen_US
mus.citation.journaltitleGeologyen_US
mus.data.thumbpage1en_US
mus.identifier.doi10.1130/G46823.1en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentEarth Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US

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