A primary study of the Jilin-Heilongjiang high-pressure metamorphic belt: Evidence and tectonic implications
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Jilin-Heilongjiang high-pressure metamorphic belt (Ji-Hei HP Belt), around western and southern margin of the Jiamusi-Khanka block, is the high-pressure metamorphic belt with the accretionary complex due to the subduction of the Jiamusi-Khanka block with the Songliao and North China blocks. The Ji-Hei HP Belt consists of the western accretionary complex belt to the west, and the Changchun-Yanji accretionary complex belt to the south. The western accretionary complex belt consista of Heilongjiang blueschist belt and Zhangguangcai-Xiaoxingan Range complex belt. This belt under greenschist to blueschist facies conditions ware between 180Ma and 210Ma, following collision between the Jiamusi-Khanka and Songliao blocks. In contract, the Changchun-Yanji accretionary complex belt consists of subduction-accretion complex, including Shitoukouman-Yantongshan piemontiteschist, Hulan metamorphic complex, Seluohe metamorphic complex, Qinglongcun metamorphic complex and Kaishantun metamorphic complex. The timing for the greenschist to blueschist facies of the Jilin-Yanji accretionary complex belt ware between 187Ma and 230Ma, with pack age at 220~230Ma. The Ji-Hei HP Belt did not result from subduction between the Siberia and North China cratons, but instead was due to subduction of the Pacific Ocean from the east. The Latest Triassic is thus the time when major north-south subduction in the Central Asian Orogenic Belt (CAOB) had ceased and westward-directed Pacific Ocean plate subduction commenced in NE China.
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A primary study of the Jilin-Heilongjiang high-pressure metamorphic belt: Evidence and tectonic implicationsWilde, Simon; Zhou, J.; Han, J.; Guo, X.; Zeng, W.; Cao, J. (2013)Jilin-Heilongjiang high-pressure metamorphic belt (Ji-Hei HP Belt), around western and southern margin of the JiamusiKhanka block, is the high-pressure metamorphic belt with the accretionary complex due to the subduction ...
The timing of final closure along the Changchun-Yanji suture zone: Constraints from detrital zircon U-Pb dating of the Triassic Dajianggang Formation, NE ChinaWang, B.; Zhou, J.; Wilde, Simon; Zhang, X.; Ren, S. (2015)© 2015 Elsevier B.V. The Dajianggang Formation is located in the Changchun-Yanji suture zone of central Jilin Province and unconformably overlies the Changchun-Yanji Accretionary Complex (CYAC), which is a mélange resulting ...
Geochemistry and U–Pb zircon dating of the Toudaoqiao blueschists in the Great Xing’an Range, northeast China, and tectonic implicationsZhou, Jian-bo; Wang, B.; Wilde, Simon; Zhao, G.; Cao, J.; Zheng, C.; Zeng, W. (2015)The Toudaoqiao Complex is a sequence of high-pressure metamorphic rocks located along the suture zone that separates the Xing’an and Erguna blocks in northeast China. The rocks were metamorphosed up to epidote–blueschist ...