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- W2948892193 abstract "The interplay between tectonics, monsoonal climate regimes, andbiodiversity of the Tibetan Plateau has been the recent focus ofmuch investigation. However, the linkages between orogeny andclimate, as well as their impacts on floral diversity, are still unclear.The Nangqian Basin of east-central Tibet holds a key Paleocene–Eocene record of deformation and environmental change duringthe early stage of the India-Asia collision, the development of theTibetan Plateau, and the proto-monsoons. Here, we examine newpalynoassemblages recovered from this basin and apply FourierTransform Infrared (FTIR) microspectroscopy to quantify ultravioletirradiance based on pollen chemistry, in combination with plantleaf wax biomarkers. Although the studied section was previouslyassigned a mid-Cretaceous age based on ostracods, this new palynologicalevidence combined with magnetostratigraphy rather indicatesa Paleogene age. Volcanic intrusives and extrusives crosscutthe lacustrine to alluvial Cenozoic Nangqian strata, providing aminimum age constraint at ca. 37 Ma. In the context of a proto-TibetanPlateau established early in the Cenozoic, the abundance ofhigh-altitude bisaccates from the Nangqian section is of particularinterest. It largely predates the spread of high-altitude elements tothe North in Central Asia from 36 Ma, and their diversification afterthe 34 Ma Eocene–Oligocene transition cooling. These observationsare in line with a growing body of evidence that parts of the TibetanPlateau had attained high elevations similar to modern conditionssoon after the India-Asia collision. The outward growth from this elevatedcentral part of the Tibetan Plateau, with associated effects onthe monsoons, is envisioned to have had major effects on dispersaland speciation of the Pinophyta across Asia during the Paleogene." @default.
- W2948892193 created "2019-06-14" @default.
- W2948892193 creator A5006751458 @default.
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- W2948892193 date "2018-08-12" @default.
- W2948892193 modified "2023-09-23" @default.
- W2948892193 title "MULTIPLE PALAEOECOLOGICAL PROXIES CONSTRAIN THE INTERPLAY BETWEEN TIBETAN PLATEAU GROWTH, THE PROTO-MONSOONS AND FLORAL DISPERSAL DURING THE EARLY INDIA-ASIA COLLISION" @default.
- W2948892193 hasPublicationYear "2018" @default.
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