Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8912579 | Precambrian Research | 2018 | 60 Pages |
Abstract
The tectonic evolution and Paleoposition of the North China Craton (NCC) in the Columbia supercontinent during Mesoproterozoic is still not well constrained owing to scarce outcrops of the Mesoproterozoic geological records. Here we present detailed U-Pb geochronological study on detrital zircons and trace elemental geochemistry of the Mesoproterozoic meta-sedimentary rocks from the Sanxiatian Formation, the upper Huade Group, in the northern NCC. The youngest cluster of detrital zircons from the Sanxiatian Formation has U-Pb age peak at â¼1357â¯Ma, which constrains the deposition of the Sanxiatian Formation after â¼1400â¯Ma. We suggest a stratigraphic correlation among the Sanxiatian, Baiyinbaolage, Liuhongwan and Xiamaling formations, all of which were deposited simultaneously in the northern NCC. The small portion of â¼2530â¯Ma zircons possibly corresponds with the growth of juvenile crust in the NCC at the late Neoarchean. The distinct â¼1850â¯Ma population may have originated from the syn-and post- tectonic granites distributed in the Trans-North China Orogen (TNCO), which is related with the collision between the Western and Eastern blocks in the NCC. The â¼1750-â¼1600â¯Ma zircon populations were also sourced from the NCC and are possibly characterized by the post-collisional magmatic events after the amalgamation of the NCC. The zircon clusters younger than 1600â¯Ma with peaks at â¼1575â¯Ma and â¼1357â¯Ma, were interpreted as exotic sources, while the latter possibly related with the final breakup of the supercontinent Columbia. With the compilation of the detrital zircon dataset from the North India, the West Australia, the North Australia, the Siberia blocks and the northwestern Laurentia, the final fragmentation of the supercontinent Columbia is suggested to be characterized by the separation between the NCC, the Australia or the India blocks during the late Mesoproterozoic.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Xiaoguang Liu, Sanzhong Li, Xiyao Li, Shujuan Zhao, Tongshan Wang, Shengyao Yu, Liming Dai, Zaizheng Zhou, Runhua Guo,