Hf and Nd Isotopic Constraints on Pre‐ and Syn‐collisional Crustal Thickness of Southern Tibet

2019 ◽  
Vol 124 (11) ◽  
pp. 11038-11054 ◽  
Author(s):  
E. W. Alexander ◽  
M. M. Wielicki ◽  
T. M. Harrison ◽  
D. J. DePaolo ◽  
Z. D. Zhao ◽  
...  
Keyword(s):  
Crustal Thickness ◽  
Southern Tibet ◽  
Isotopic Constraints

Two parallel magmatic belts with contrasting isotopic characteristics from southern Tibet to Myanmar: zircon U–Pb and Hf isotopic constraints

2018 ◽  
Vol 176 (3) ◽  
pp. 574-587 ◽  
Author(s):  
Te-Hsien Lin ◽  
A. H. G. Mitchell ◽  
Sun-Lin Chung ◽  
Xi-Bin Tan ◽  
Jui-Ting Tang ◽  
...  
Keyword(s):  
Southern Tibet ◽  
Isotopic Constraints

scholarly journals Zircon U–Pb geochronology and Hf isotopic constraints on petrogenesis of the Gangdese batholith, southern Tibet

2009 ◽  
Vol 262 (3-4) ◽  
pp. 229-245 ◽  
Author(s):  
Wei-Qiang Ji ◽  
Fu-Yuan Wu ◽  
Sun-Lin Chung ◽  
Jin-Xiang Li ◽  
Chuan-Zhou Liu
Keyword(s):  
Southern Tibet ◽  
Isotopic Constraints

scholarly journals Supplemental Material: Jurassic to Neogene Quantitative Crustal Thickness Estimates in Southern Tibet

2021 ◽  
Author(s):  
Kurt E. Sundell ◽  
et al.
Keyword(s):  
Crustal Thickness ◽  
Full Data ◽  
Southern Tibet ◽  
Data Set ◽  
Matlab Code

Filtered and unfiltered geochronology-geochemistry results are from the Tibetan Magmatism Database (Chapman and Kapp, 2017); the full data set between 89–92 °W and 29–31 °N was downloaded 20 July 2020. All data are available online at jaychapman.org/tibet-magmatism-database.html. MATLAB code is available at github.com/kurtsundell/CrustalThickness and incorporates the filtered data to reproduce all results presented in this work.<div><br></div>

scholarly journals Zircon U–Pb and Hf isotopic constraints from eastern Transhimalayan batholiths on the precollisional magmatic and tectonic evolution in southern Tibet

2009 ◽  
Vol 477 (1-2) ◽  
pp. 3-19 ◽  
Author(s):  
Han-Yi Chiu ◽  
Sun-Lin Chung ◽  
Fu-Yuan Wu ◽  
Dunyi Liu ◽  
Yu-Hsuan Liang ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Southern Tibet ◽  
Isotopic Constraints

scholarly journals The nature and timing of crustal thickening in Southern Tibet: Geochemical and zircon Hf isotopic constraints from postcollisional adakites

2009 ◽  
Vol 477 (1-2) ◽  
pp. 36-48 ◽  
Author(s):  
Sun-Lin Chung ◽  
Mei-Fei Chu ◽  
Jianqing Ji ◽  
Suzanne Y. O'Reilly ◽  
N.J. Pearson ◽  
...  
Keyword(s):  
Crustal Thickening ◽  
Southern Tibet ◽  
Isotopic Constraints

scholarly journals Record of Crustal Thickening and Synconvergent Extension from the Dajiamang Tso Rift, Southern Tibet

Geosciences ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 209
Author(s):  
William B. Burke ◽  
Andrew K. Laskowski ◽  
Devon A. Orme ◽  
Kurt E. Sundell ◽  
Michael H. Taylor ◽  
...  
Keyword(s):  
Dynamic Models ◽  
Hanging Wall ◽  
Crustal Thickness ◽  
Suture Zone ◽  
Crustal Thickening ◽  
Southern Tibet ◽  
South Central ◽  
Crustal Thinning ◽  
Indian Lithosphere ◽  
Central Tibet

North-trending rifts throughout south-central Tibet provide an opportunity to study the dynamics of synconvergent extension in contractional orogenic belts. In this study, we present new data from the Dajiamang Tso rift, including quantitative crustal thickness estimates calculated from trace/rare earth element zircon data, U-Pb geochronology, and zircon-He thermochronology. These data constrain the timing and rates of exhumation in the Dajiamang Tso rift and provide a basis for evaluating dynamic models of synconvergent extension. Our results also provide a semi-continuous record of Mid-Cretaceous to Miocene evolution of the Himalayan-Tibetan orogenic belt along the India-Asia suture zone. We report igneous zircon U-Pb ages of ~103 Ma and 70–42 Ma for samples collected from the Xigaze forearc basin and Gangdese Batholith/Linzizong Formation, respectively. Zircon-He cooling ages of forearc rocks in the hanging wall of the Great Counter thrust are ~28 Ma, while Gangdese arc samples in the footwalls of the Dajiamang Tso rift are 16–8 Ma. These data reveal the approximate timing of the switch from contraction to extension along the India-Asia suture zone (minimum 16 Ma). Crustal-thickness trends from zircon geochemistry reveal possible crustal thinning (to ~40 km) immediately prior to India-Eurasia collision onset (58 Ma). Following initial collision, crustal thickness increases to 50 km by 40 Ma with continued thickening until the early Miocene supported by regional data from the Tibetan Magmatism Database. Current crustal thickness estimates based on geophysical observations show no evidence for crustal thinning following the onset of E–W extension (~16 Ma), suggesting that modern crustal thickness is likely facilitated by an underthrusting Indian lithosphere balanced by upper plate extension.

scholarly journals Jurassic to Neogene Quantitative Crustal Thickness Estimates in Southern Tibet

GSA Today ◽  
2021 ◽  
Author(s):  
Kurt Sundell ◽  
Andrew Laskowski ◽  
Paul Kapp ◽  
Mihai Ducea ◽  
James Chapman
Keyword(s):  
Crustal Thickness ◽  
Southern Tibet

Geochemical and Sr–Nd isotopic constraints on the genesis of the Cenozoic Linzizong volcanic successions, southern Tibet

2012 ◽  
Vol 53 ◽  
pp. 96-114 ◽  
Author(s):  
Hao-Yang Lee ◽  
Sun-Lin Chung ◽  
Jianqing Ji ◽  
Qing Qian ◽  
Sylvain Gallet ◽  
...  
Keyword(s):  
Southern Tibet ◽  
Isotopic Constraints
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