Multi-mechanism Orogenic Model of the Su-Jiao Orogenic Belt
- Resource Type
- Academic Journal
- Authors
- FAN Jintao; CHEN Jiongda; CHEN Huogen
- Source
- 地质学报(英文版) / ACTA GEOLOGICA SINICA. 74(2):201-206
- Subject
- orogenic system
multi-mechanism
re-orogeny
Su-Jiao orogenic belt
- Language
- Chinese
- ISSN
- 1000-9515
The Su-Jiao orogenic belt is the eastern part of the Central Mountain System of China. Recent studies on its orogenic system indicate that the Su-Jiao orogenic belt is a complex orogenic belt which suffered at least 3 orogenies of different mechanisms in the Mesoproterozoic, Neoproterozoic and Triassic respectively. The Meso-Neoproterozoic orogenies belong to the Wilson cycle on the plate margins. The belt is a part of the Late Mesoproterozoic supercontinent Rodinia. The Triassic orogeny belongs to the re-orogeny of the non-Wilson cycle. Delamination of mountain roots occurred after both the Wilson and non-Wilson cycles in the Su-Jiao orogenic belt. The large-amplitude isostatic uplift of mountains, magmatic activities and basin-forming and mountain-making in the upper crust, all indicate the general significance of delamination in the development of orogenic belts.