The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest

Zhongyu  Xiong; Ding Lin; RA Spicer; Alexander J Farnsworth; Xu Wang; Paul J Valdes; Qinghai  Zhang; Liyun  Zhang; Fulong  Cai; Houqi  Wang; Zhenyu  Li; Peiping  Song; Xudong  Guo; Yahui  Yue

doi:10.1016/j.epsl.2020.116312

The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest

Zhongyu Xiong, Ding Lin^*, RA Spicer, Alexander J Farnsworth, Xu Wang, Paul J Valdes, Qinghai Zhang, Liyun Zhang, Fulong Cai, Houqi Wang, Zhenyu Li, Peiping Song, Xudong Guo, Yahui Yue

^*Corresponding author for this work

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Abstract

Views differ on the uplift history of the SE Tibetan Plateau and causal geodynamic mechanisms, yet reliable age-constrained paleoaltimetry in this region could test growth models of the entire plateau. Here we apply carbonate clumped isotope thermometry to well-dated carbonate paleosols and marls in the Gonjo Basin, SE Tibet, to reveal the topographic evolution of the basin. The sedimentary ages of carbonates of the lower and upper Ranmugou Formation are constrained to 54-50 Ma and 44-40 Ma, respectively. The temperature derived from carbonate clumped isotope thermometry indicates the mean annual air temperature (MAAT) of the Gonjo Basin in the early Eocene was ∼24 °C, which is consistent with the warm climate indicated by palm fossils. The MAAT of the basin in the middle Eocene was ∼7 °C, 17 °C cooler than in the early Eocene. Carbonate clumped oxygen isotope thermometry-based …

Original language	English
Journal	Earth and Planetary Science Letters
DOIs	https://doi.org/10.1016/j.epsl.2020.116312
Publication status	Published - 1 Aug 2020

Keywords

geology
Tibet

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@article{aa9761c4011d4061bdba0e47289c51d5,

title = "The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest",

abstract = "Views differ on the uplift history of the SE Tibetan Plateau and causal geodynamic mechanisms, yet reliable age-constrained paleoaltimetry in this region could test growth models of the entire plateau. Here we apply carbonate clumped isotope thermometry to well-dated carbonate paleosols and marls in the Gonjo Basin, SE Tibet, to reveal the topographic evolution of the basin. The sedimentary ages of carbonates of the lower and upper Ranmugou Formation are constrained to 54-50 Ma and 44-40 Ma, respectively. The temperature derived from carbonate clumped isotope thermometry indicates the mean annual air temperature (MAAT) of the Gonjo Basin in the early Eocene was ∼24 °C, which is consistent with the warm climate indicated by palm fossils. The MAAT of the basin in the middle Eocene was ∼7 °C, 17 °C cooler than in the early Eocene. Carbonate clumped oxygen isotope thermometry-based …",

keywords = "geology, Tibet",

author = "Zhongyu Xiong and Ding Lin and RA Spicer and Farnsworth, {Alexander J} and Xu Wang and Valdes, {Paul J} and Qinghai Zhang and Liyun Zhang and Fulong Cai and Houqi Wang and Zhenyu Li and Peiping Song and Xudong Guo and Yahui Yue",

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doi = "10.1016/j.epsl.2020.116312",

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TY - JOUR

T1 - The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest

AU - Xiong, Zhongyu

AU - Lin, Ding

AU - Spicer, RA

AU - Farnsworth, Alexander J

AU - Wang, Xu

AU - Valdes, Paul J

AU - Zhang, Qinghai

AU - Zhang, Liyun

AU - Cai, Fulong

AU - Wang, Houqi

AU - Li, Zhenyu

AU - Song, Peiping

AU - Guo, Xudong

AU - Yue, Yahui

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Views differ on the uplift history of the SE Tibetan Plateau and causal geodynamic mechanisms, yet reliable age-constrained paleoaltimetry in this region could test growth models of the entire plateau. Here we apply carbonate clumped isotope thermometry to well-dated carbonate paleosols and marls in the Gonjo Basin, SE Tibet, to reveal the topographic evolution of the basin. The sedimentary ages of carbonates of the lower and upper Ranmugou Formation are constrained to 54-50 Ma and 44-40 Ma, respectively. The temperature derived from carbonate clumped isotope thermometry indicates the mean annual air temperature (MAAT) of the Gonjo Basin in the early Eocene was ∼24 °C, which is consistent with the warm climate indicated by palm fossils. The MAAT of the basin in the middle Eocene was ∼7 °C, 17 °C cooler than in the early Eocene. Carbonate clumped oxygen isotope thermometry-based …

AB - Views differ on the uplift history of the SE Tibetan Plateau and causal geodynamic mechanisms, yet reliable age-constrained paleoaltimetry in this region could test growth models of the entire plateau. Here we apply carbonate clumped isotope thermometry to well-dated carbonate paleosols and marls in the Gonjo Basin, SE Tibet, to reveal the topographic evolution of the basin. The sedimentary ages of carbonates of the lower and upper Ranmugou Formation are constrained to 54-50 Ma and 44-40 Ma, respectively. The temperature derived from carbonate clumped isotope thermometry indicates the mean annual air temperature (MAAT) of the Gonjo Basin in the early Eocene was ∼24 °C, which is consistent with the warm climate indicated by palm fossils. The MAAT of the basin in the middle Eocene was ∼7 °C, 17 °C cooler than in the early Eocene. Carbonate clumped oxygen isotope thermometry-based …

KW - geology

KW - Tibet

U2 - 10.1016/j.epsl.2020.116312

DO - 10.1016/j.epsl.2020.116312

M3 - Article (Academic Journal)

SN - 0012-821X

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

ER -

The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest

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