TY - JOUR
T1 - Paleogeographic Reconstruction of Precambrian Terranes Reworked by Phanerozoic Orogens
T2 - An Example Based on Detrital Zircon REE From Lhasa Terrane in Southern Tibet
AU - Hu, Pei yuan
AU - Zhai, Qing guo
AU - Cawood, Peter A.
AU - Weinberg, Roberto F.
AU - Zhao, Guo chun
AU - Tang, Yue
AU - Liu, Yi ming
N1 - Funding Information:
The authors thank Editor Sarah Feakins for her editorial handling and two anonymous journal reviewers and Xiu‐zheng Zhang for their detailed comments that considerably improved the manuscript. The authors thank Carlos E. Ganade for insightful reviews of an early version of this manuscript. This study was supported by the Second Tibetan Plateau Scientific Expedition and Research (STEP) (Grant 2019QZKK0703), the National Key Research and Development Project of China (Grant 2021YFC2901901), the National Science Foundation of China (Grants 41872240 and 42072268), and the Chinese Geological Survey Project (Grant DD20221630). Peter A. Cawood acknowledges support from Australian Research Grant FL160100168.
Publisher Copyright:
© 2023. The Authors.
PY - 2023/3/16
Y1 - 2023/3/16
N2 - Paleogeographic reconstruction of Precambrian terranes reworked by Phanerozoic orogens (e.g., the Tibetan Plateau) results in complex lithotectonic relations due to intracrustal reworking by tectonothermal events. Detrital zircon rare earth element (REE) databases at global (global major river sands) and regional (the Gangdese Mountains, southern Tibet) scales reveal trends in (Formula presented.) and Eu/Eu* that effectively record the crustal evolution of the source, including crustal thickness and redox state of the magma that generated the zircons. Regional comparisons of these chemical markers provide a new approach for paleogeographic reconstructions that we apply to study the origin of the Lhasa terrane, southern Tibet. Using Precambrian to early Paleozoic sedimentary and igneous rocks in the Lhasa terrane and compiling detrital zircon analyses from the northern margin of Gondwana, we show that the Lhasa terrane had an African affinity in the Rodinia–Gondwana supercontinent cycles (ca. 1.4–0.4 Ga).
AB - Paleogeographic reconstruction of Precambrian terranes reworked by Phanerozoic orogens (e.g., the Tibetan Plateau) results in complex lithotectonic relations due to intracrustal reworking by tectonothermal events. Detrital zircon rare earth element (REE) databases at global (global major river sands) and regional (the Gangdese Mountains, southern Tibet) scales reveal trends in (Formula presented.) and Eu/Eu* that effectively record the crustal evolution of the source, including crustal thickness and redox state of the magma that generated the zircons. Regional comparisons of these chemical markers provide a new approach for paleogeographic reconstructions that we apply to study the origin of the Lhasa terrane, southern Tibet. Using Precambrian to early Paleozoic sedimentary and igneous rocks in the Lhasa terrane and compiling detrital zircon analyses from the northern margin of Gondwana, we show that the Lhasa terrane had an African affinity in the Rodinia–Gondwana supercontinent cycles (ca. 1.4–0.4 Ga).
UR - http://www.scopus.com/inward/record.url?scp=85150219048&partnerID=8YFLogxK
U2 - 10.1029/2023GL102979
DO - 10.1029/2023GL102979
M3 - Article
AN - SCOPUS:85150219048
SN - 0094-8276
VL - 50
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 5
M1 - e2023GL102979
ER -