TY - JOUR
T1 - Eastward termination of the Solonker-Xar Moron River Suture determined by detrital zircon U-Pb isotopic dating and Permian floristics
AU - Sun, Yuewu
AU - Li, Mingsong
AU - Ge, Wenchun
AU - Zhang, Yanlong
AU - Zhang, Dejun
N1 - Funding Information:
We are indebted to Dr. Xiaodong Zhou for introducing us to the field area and for his willingness to share decades of accumulated wisdom on the regional geology of northeastern China. We are grateful to Dr. Wenjiao Xiao and one other anonymous reviewer for the careful and thorough review of the manuscript; their constructive suggestions have strengthened the manuscript considerably. We also thank Bor-ming Jahn (Editor-in-chief) and Miss Irene Yao for graciously handling this paper. This work was financially supported by the special state program “Oil & Gas Resource Exploration and Strategic Selection of Potential Areas in the Upper Paleozoic of NE China” (Grant 2009GYXQ12) and by the Opening Foundation of the Key Laboratory for the Evolution of Past Life and Environment in Northeast Asia, Ministry of Education, China.
PY - 2013/10/5
Y1 - 2013/10/5
N2 - The Permian Solonker-Xar Moron River Suture in South Mongolia and Inner Mongolia of China represents a major tectonic boundary in Asia. The position of its eastward continuation in northeastern China has been debated for many years. In order to resolve this debate, we measured detrital zircons of the Cisuralian (Early Permian) plant fossil-bearing Hesheng Formation in the Yanbian area, Jilin Province. The detrital zircons have ages of ca. 2541-2535. Ma, 1897-1832. Ma, 458-452. Ma, and 390-280. Ma. We therefore conclude that the depositional age of the Hesheng Formation is younger than ca. 280. Ma; this is consistent with paleontologic data that indicates an Artinskian-Early Kungurian age. The presence of Neoarchean and Paleoproterozoic zircons suggests that the Hesheng Formation may have a North-China affinity; the absence of Neoproterozoic and Pan-African zircons preclude detrital sources from the Jiamusi-Mongolia Block during the Cisuralian. This, combined with the Permian floristic and stratigraphic data, provides a clue that the Solonker-Xar Moron River Suture likely extends to the Wangqing-Hunchun region, in eastern Jilin Province.
AB - The Permian Solonker-Xar Moron River Suture in South Mongolia and Inner Mongolia of China represents a major tectonic boundary in Asia. The position of its eastward continuation in northeastern China has been debated for many years. In order to resolve this debate, we measured detrital zircons of the Cisuralian (Early Permian) plant fossil-bearing Hesheng Formation in the Yanbian area, Jilin Province. The detrital zircons have ages of ca. 2541-2535. Ma, 1897-1832. Ma, 458-452. Ma, and 390-280. Ma. We therefore conclude that the depositional age of the Hesheng Formation is younger than ca. 280. Ma; this is consistent with paleontologic data that indicates an Artinskian-Early Kungurian age. The presence of Neoarchean and Paleoproterozoic zircons suggests that the Hesheng Formation may have a North-China affinity; the absence of Neoproterozoic and Pan-African zircons preclude detrital sources from the Jiamusi-Mongolia Block during the Cisuralian. This, combined with the Permian floristic and stratigraphic data, provides a clue that the Solonker-Xar Moron River Suture likely extends to the Wangqing-Hunchun region, in eastern Jilin Province.
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U2 - 10.1016/j.jseaes.2013.07.018
DO - 10.1016/j.jseaes.2013.07.018
M3 - Article
AN - SCOPUS:84883349094
SN - 1367-9120
VL - 75
SP - 243
EP - 250
JO - Journal of Asian Earth Sciences
JF - Journal of Asian Earth Sciences
ER -