TY - JOUR
T1 - Late paleozoic to early mesozoic provenance record of paleo-pacific subduction beneath South China
AU - Hu, L.
AU - Cawood, Peter
AU - Du, Y.
AU - Yang, J.
AU - Jiao, L.
PY - 2015
Y1 - 2015
N2 - ©2015. American Geophysical Union. All Rights Reserved. Northeast trending Yong'an Basin, southeast South China Craton, preserves a Permian-Jurassic, marine to continental, siliciclastic-dominated, retroarc foreland basin succession. Modal and detrital zircon data, along with published paleocurrent data, sedimentary facies, and euhedral to subhedral detrital zircon shapes, indicate derivation from multicomponent, nearby sources with input from both the interior of the craton to the northwest and from an inferred arc accretionary complex to the southeast. The detrital zircon U-Pb age spectra range in age from Archean to early Mesozoic, with major age groups at 2000-1700-Ma, 1200-900-Ma, 400-340-Ma, and 300-240-Ma. In addition, Early Jurassic strata include zircon detritus with ages of 200-170-Ma. Regional geological relations suggest that Precambrian and Early Paleozoic detritus was derived from the inland Wuyi Mountain region and Yunkai Massif of the South China Craton. Sources for Middle Paleozoic to early Mesozoic detrital zircons include input from beyond the currently exposed China mainland. Paleogeographic reconstruction in East Asia suggests derivation from an active convergent plate margin along the southeastern rim of the craton that incorporated part of Southwest Japan and is related to the subduction of the Paleo-Pacific Ocean. Integration of the geologic and provenance records of the Yong'an Basin with the time equivalent Yongjiang and Shiwandashan basins that lie to the southwest and south, respectively, provides an integrated record of the subduction of the Paleo-Pacific Ocean along the southeast margin of the South China Craton and termination of subduction of the Paleo-Tethys beneath its southwest margin in Permo-Triassic. Key Points Yong'an Basin, southeast China was a retroarc foreland basin in Permian-Jurassic Accretionary orogenic belt developed along SE margin of SCC in Permian-Jurassic Both Paleo-Tethys and Paleo-Pacific affect the Permian-Triassic event in the SCC
AB - ©2015. American Geophysical Union. All Rights Reserved. Northeast trending Yong'an Basin, southeast South China Craton, preserves a Permian-Jurassic, marine to continental, siliciclastic-dominated, retroarc foreland basin succession. Modal and detrital zircon data, along with published paleocurrent data, sedimentary facies, and euhedral to subhedral detrital zircon shapes, indicate derivation from multicomponent, nearby sources with input from both the interior of the craton to the northwest and from an inferred arc accretionary complex to the southeast. The detrital zircon U-Pb age spectra range in age from Archean to early Mesozoic, with major age groups at 2000-1700-Ma, 1200-900-Ma, 400-340-Ma, and 300-240-Ma. In addition, Early Jurassic strata include zircon detritus with ages of 200-170-Ma. Regional geological relations suggest that Precambrian and Early Paleozoic detritus was derived from the inland Wuyi Mountain region and Yunkai Massif of the South China Craton. Sources for Middle Paleozoic to early Mesozoic detrital zircons include input from beyond the currently exposed China mainland. Paleogeographic reconstruction in East Asia suggests derivation from an active convergent plate margin along the southeastern rim of the craton that incorporated part of Southwest Japan and is related to the subduction of the Paleo-Pacific Ocean. Integration of the geologic and provenance records of the Yong'an Basin with the time equivalent Yongjiang and Shiwandashan basins that lie to the southwest and south, respectively, provides an integrated record of the subduction of the Paleo-Pacific Ocean along the southeast margin of the South China Craton and termination of subduction of the Paleo-Tethys beneath its southwest margin in Permo-Triassic. Key Points Yong'an Basin, southeast China was a retroarc foreland basin in Permian-Jurassic Accretionary orogenic belt developed along SE margin of SCC in Permian-Jurassic Both Paleo-Tethys and Paleo-Pacific affect the Permian-Triassic event in the SCC
U2 - 10.1002/2014TC003803
DO - 10.1002/2014TC003803
M3 - Article
SN - 0278-7407
VL - 34
SP - 986
EP - 1008
JO - Tectonics
JF - Tectonics
IS - 5
ER -
