Permo-Triassic detrital records of South China and implications for the Indosinian events in East Asia

Lisha Hu, Peter A. Cawood, Yuansheng Du, Yajun Xu, Chenghao Wang, Zhiwen Wang, Qianli Ma, Xinran Xu

Research output: Contribution to journalArticleResearchpeer-review

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Abstract

Provenance analyses of Lower to Middle Triassic strata from the Greater Youjiang Basin along with the Permian strata of Hainan Island, provide a record of the collisional assembly of the South China Craton and Indochina Block and their incorporation into Asia. Detrital zircons from Lower and Middle Triassic samples show similar overall age spectra ranging from Archean to Triassic with major age groups at 300-250. Ma, 480-420. Ma, and 1200-900. Ma, as well as at 400-300. Ma in one Triassic sample. Permian siltstones from Hainan Island, to the southeast of the Greater Youjiang Basin, record different age spectra with major age groups at 400-300. Ma and 530-420. Ma and subordinate components at 1200-900. Ma and 1900-1700. Ma. These age data in combination with available paleocurrent data and regional geological relations suggest that Precambrian detrital zircons were derived from the Precambrian basement or recycled from the overlying early Paleozoic sedimentary rocks that contain Precambrian detritus. Early Paleozoic detrital zircons were derived from igneous rocks in the South China Craton. Devonian-Triassic detrital zircons in the Triassic strata were likely sourced from coeval magmatic activity related to closure of Paleo-Tethys branch ocean that lay to the southwest, whereas 400-300. Ma detrital zircons in the Permian siltstones of Hainan Island were likely derived from a Paleozoic magmatic arc source that extended along the eastern-southeastern margin of China from Hainan Island to Japan in response to subduction of the Paleo-Pacific oceanic crust.Detrital zircon, trace element, and sandstone modal data for Permo-Triassic strata from the Greater Youjiang Basin indicate that the basin evolved from a trailing-edge passive margin setting to a peripheral foreland basin during closure of the Paleo-Tethys Ocean and collision between Indochina and South China. The initiation time of the foreland basin decreases from southeast to southwest across the basin, probably reflecting oblique collision. In contrast, the Permian strata on Hainan Island record a provenance history distinct from the Greater Youjiang Basin, which is related to late Paleozoic to Mesozoic subduction of the Paleo-Pacific Plate beneath South China.

Original languageEnglish
Pages (from-to)84-100
Number of pages17
JournalPalaeogeography, Palaeoclimatology, Palaeoecology
Volume485
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • Greater Youjiang Basin
  • Hainan Island
  • Paleo-Pacific
  • Paleo-Tethys
  • Permian-Triassic orogeny

Cite this

Hu, Lisha ; Cawood, Peter A. ; Du, Yuansheng ; Xu, Yajun ; Wang, Chenghao ; Wang, Zhiwen ; Ma, Qianli ; Xu, Xinran. / Permo-Triassic detrital records of South China and implications for the Indosinian events in East Asia. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2017 ; Vol. 485. pp. 84-100.
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author = "Lisha Hu and Cawood, {Peter A.} and Yuansheng Du and Yajun Xu and Chenghao Wang and Zhiwen Wang and Qianli Ma and Xinran Xu",
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Permo-Triassic detrital records of South China and implications for the Indosinian events in East Asia. / Hu, Lisha; Cawood, Peter A.; Du, Yuansheng; Xu, Yajun; Wang, Chenghao; Wang, Zhiwen; Ma, Qianli; Xu, Xinran.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 485, 01.11.2017, p. 84-100.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Permo-Triassic detrital records of South China and implications for the Indosinian events in East Asia

AU - Hu, Lisha

AU - Cawood, Peter A.

AU - Du, Yuansheng

AU - Xu, Yajun

AU - Wang, Chenghao

AU - Wang, Zhiwen

AU - Ma, Qianli

AU - Xu, Xinran

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N2 - Provenance analyses of Lower to Middle Triassic strata from the Greater Youjiang Basin along with the Permian strata of Hainan Island, provide a record of the collisional assembly of the South China Craton and Indochina Block and their incorporation into Asia. Detrital zircons from Lower and Middle Triassic samples show similar overall age spectra ranging from Archean to Triassic with major age groups at 300-250. Ma, 480-420. Ma, and 1200-900. Ma, as well as at 400-300. Ma in one Triassic sample. Permian siltstones from Hainan Island, to the southeast of the Greater Youjiang Basin, record different age spectra with major age groups at 400-300. Ma and 530-420. Ma and subordinate components at 1200-900. Ma and 1900-1700. Ma. These age data in combination with available paleocurrent data and regional geological relations suggest that Precambrian detrital zircons were derived from the Precambrian basement or recycled from the overlying early Paleozoic sedimentary rocks that contain Precambrian detritus. Early Paleozoic detrital zircons were derived from igneous rocks in the South China Craton. Devonian-Triassic detrital zircons in the Triassic strata were likely sourced from coeval magmatic activity related to closure of Paleo-Tethys branch ocean that lay to the southwest, whereas 400-300. Ma detrital zircons in the Permian siltstones of Hainan Island were likely derived from a Paleozoic magmatic arc source that extended along the eastern-southeastern margin of China from Hainan Island to Japan in response to subduction of the Paleo-Pacific oceanic crust.Detrital zircon, trace element, and sandstone modal data for Permo-Triassic strata from the Greater Youjiang Basin indicate that the basin evolved from a trailing-edge passive margin setting to a peripheral foreland basin during closure of the Paleo-Tethys Ocean and collision between Indochina and South China. The initiation time of the foreland basin decreases from southeast to southwest across the basin, probably reflecting oblique collision. In contrast, the Permian strata on Hainan Island record a provenance history distinct from the Greater Youjiang Basin, which is related to late Paleozoic to Mesozoic subduction of the Paleo-Pacific Plate beneath South China.

AB - Provenance analyses of Lower to Middle Triassic strata from the Greater Youjiang Basin along with the Permian strata of Hainan Island, provide a record of the collisional assembly of the South China Craton and Indochina Block and their incorporation into Asia. Detrital zircons from Lower and Middle Triassic samples show similar overall age spectra ranging from Archean to Triassic with major age groups at 300-250. Ma, 480-420. Ma, and 1200-900. Ma, as well as at 400-300. Ma in one Triassic sample. Permian siltstones from Hainan Island, to the southeast of the Greater Youjiang Basin, record different age spectra with major age groups at 400-300. Ma and 530-420. Ma and subordinate components at 1200-900. Ma and 1900-1700. Ma. These age data in combination with available paleocurrent data and regional geological relations suggest that Precambrian detrital zircons were derived from the Precambrian basement or recycled from the overlying early Paleozoic sedimentary rocks that contain Precambrian detritus. Early Paleozoic detrital zircons were derived from igneous rocks in the South China Craton. Devonian-Triassic detrital zircons in the Triassic strata were likely sourced from coeval magmatic activity related to closure of Paleo-Tethys branch ocean that lay to the southwest, whereas 400-300. Ma detrital zircons in the Permian siltstones of Hainan Island were likely derived from a Paleozoic magmatic arc source that extended along the eastern-southeastern margin of China from Hainan Island to Japan in response to subduction of the Paleo-Pacific oceanic crust.Detrital zircon, trace element, and sandstone modal data for Permo-Triassic strata from the Greater Youjiang Basin indicate that the basin evolved from a trailing-edge passive margin setting to a peripheral foreland basin during closure of the Paleo-Tethys Ocean and collision between Indochina and South China. The initiation time of the foreland basin decreases from southeast to southwest across the basin, probably reflecting oblique collision. In contrast, the Permian strata on Hainan Island record a provenance history distinct from the Greater Youjiang Basin, which is related to late Paleozoic to Mesozoic subduction of the Paleo-Pacific Plate beneath South China.

KW - Greater Youjiang Basin

KW - Hainan Island

KW - Paleo-Pacific

KW - Paleo-Tethys

KW - Permian-Triassic orogeny

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