SHRIMP U–Pb ages of K-bentonite beds in the Xiamaling Formation: Implications for revised subdivision of the Meso- to Neoproterozoic history of the North China Craton

2008 ◽  
Vol 14 (3) ◽  
pp. 543-553 ◽  
Author(s):  
Wenbo Su ◽  
Shihong Zhang ◽  
Warren D. Huff ◽  
Huaikun Li ◽  
Frank R. Ettensohn ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
The North ◽  
History Of ◽  
Xiamaling Formation

Deformation history of the Paleoproterozoic Liaohe assemblage in the eastern block of the North China Craton

2005 ◽  
Vol 24 (5) ◽  
pp. 659-674 ◽  
Author(s):  
Sanzhong Li ◽  
Guochun Zhao ◽  
Min Sun ◽  
Zongzhu Han ◽  
Yan Luo ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Deformation History ◽  
The North ◽  
History Of

Are Wilson Cycles preserved in Archean cratons? A comparison of the North China and Slave cratons

2014 ◽  
Vol 51 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Timothy M. Kusky ◽  
Xiaoyong Li ◽  
Zhensheng Wang ◽  
Jianmin Fu ◽  
Luo Ze ◽  
...  
Keyword(s):  
North China Craton ◽  
Plate Tectonics ◽  
North China ◽  
Passive Margin ◽  
The North ◽  
Tectonic History ◽  
History Of ◽  
Pacific Slab ◽  
Arc Setting ◽  
Back Arc

A review and comparison of the tectonic history of the North China and Slave cratons reveal that the two cratons have many similarities and some significant differences. The similarities rest in the conclusion that both cratons have a history of a Wilson Cycle, having experienced rifting of an old continent in the late Archean, development of a rift to passive margin sequence, collision of this passive margin with arcs within 100–200 Ma of the formation of the passive margin, reversal of subduction polarity, then eventual climactic collision with another arc terrane, microcontinental fragment, or continent. This cycle demonstrates the operation of Paleozoic-style plate tectonics in the late Archean. The main differences lie in the later tectonic evolution. The Slave’s post-cratonization history is dominated by subduction dipping away from the interior of the craton, and later incorporation into the interior of a larger continent, whereas the North China Craton has had a long history of subduction beneath the craton, including presently being located above the flat-lying Pacific slab resting in the mantle transition zone, placing it in a broad back-arc setting, with multiple mantle hydration events and collisions along its borders. The hydration enhances melting in the overlying mantle, and leads to melts migrating upwards to thermochemically erode the lithospheric root. This major difference may explain why the relatively small Slave craton preserves its thick Archean lithospheric root, whereas the eastern North China Craton has lost it.

scholarly journals Gulf of Nuna: Astrochronologic correlation of a Mesoproterozoic oceanic euxinic event

Geology ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 25-29
Author(s):  
Ross N. Mitchell ◽  
Uwe Kirscher ◽  
Marcus Kunzmann ◽  
Yebo Liu ◽  
Grant M. Cox
Keyword(s):  
North China Craton ◽  
North China ◽  
Carbonaceous Shale ◽  
Stratigraphic Correlation ◽  
Geochronological Data ◽  
The North ◽  
Carbon Burial ◽  
Orbital Cycles ◽  
Organic Carbon Burial ◽  
Xiamaling Formation

Abstract The ca. 1.4 Ga Velkerri and Xiamaling Formations, in Australia and the north China craton, respectively, are both carbonaceous shale deposits that record a prominent euxinic interval and were intruded by ca. 1.3 Ga dolerite sills. These similarities raise the possibility that these two units correlate, which would suggest the occurrence of widespread euxinia, organic carbon burial, and source rock deposition. Paleomagnetic data are consistent with Australia and the north China craton being neighbors in the supercontinent Nuna and thus permit deposition in a single large basin, and the putative stratigraphic correlation. However, lack of geochronological data has precluded definitive testing. The Xiamaling Formation has been shown to exhibit depositional control by orbital cycles. Here, we tested the putative correlation with the Velkerri Formation by cyclostratigraphic analysis. The Velkerri Formation exhibits sedimentological cycles that can be interpreted to represent the entire hierarchy of orbital cycles, according to a sedimentation rate that is consistent with Re-Os ages. Comparison of the inferred durations of the euxinic intervals preserved in both the Xiamaling and Velkerri Formations reveals a nearly identical ∼10-m.y.-long oceanic euxinic event. This permits the interpretation that the two hydrocarbon-rich units were deposited and matured in the same basin of Nuna, similar to the Gulf of Mexico during the breakup of Pangea.

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