Early Paleozoic felsic magmatic evolution of the western Central Qilian belt, Northwestern China, and constraints on convergent margin processes

2017 ◽  
Vol 41 ◽  
pp. 301-324 ◽  
Author(s):  
Chao Wang ◽  
Rong-She Li ◽  
R. Hugh Smithies ◽  
Meng Li ◽  
Yan Peng ◽  
...  
Keyword(s):  
Northwestern China ◽  
Early Paleozoic ◽  
Magmatic Evolution ◽  
Convergent Margin

scholarly journals Convergent margin Ni-Cu-PGE-Cr ore systems: temporal and magmatic evolution

2019 ◽  
Author(s):  
G T Nixon ◽  
D Milidragovic ◽  
J S Scoates
Keyword(s):  
Magmatic Evolution ◽  
Convergent Margin

Middle Ordovician lithistid sponges from the Bachu-Kalpin area, Xinjiang, northwestern China

2003 ◽  
Vol 77 (3) ◽  
pp. 430-441 ◽  
Author(s):  
Liu Bingli ◽  
J. Keith Rigby ◽  
Zhu Zhongde
Keyword(s):  
North American ◽  
Northwestern China ◽  
Early Paleozoic ◽  
Middle Ordovician ◽  
Platform Margin

Moderately diverse Middle Ordovician sponge faunas of Darriwilian (late Arenig to early Llanvirn) age have been discovered in outcrops in the Bachu-Kalpin area of the Tarim platform of Xinjiang, China. These are the first reported occurrences of early Paleozoic sponges from Xinjiang, China. These sponges occur in the Yijianfang and Dawangou Formations, which are of nearly the same age, but crop out in different areas of the platform margin. Fossil sponges discovered to date are the anthaspidellid lithistid sponges Archaeoscyphia minganensis (Billings, 1859); Hudsonospongia cyclostoma Raymond and Okulitch, 1940; Calycocoelia profunda sichuanensis Deng, 1990; Calycocoelia sp.; Pseudopalmatohindia sp.; Aulocopium sp.; Annulospongia tarimensis n. gen. and sp.; Rhopalocoelia kalpinensis n. sp.; Rhopalocoelia bachuensis n. sp.; and Zittelella xinjiangensis n. sp. They are preserved in reefal limestones and are associated with Calathium, cyanobacteria, and bryozoans, like in many North American assemblages.

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