Identification of the island-are magmatic zone in the Lianghe-Raofeng-Wuliba area, south Qinling and its tectonic significance

Citation
Sc. Lai et al., Identification of the island-are magmatic zone in the Lianghe-Raofeng-Wuliba area, south Qinling and its tectonic significance, SCI CHINA D, 43, 2000, pp. 69-81
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN journal
1006-9313 → ACNP
Volume
43
Year of publication
2000
Supplement
S
Pages
69 - 81
Database
ISI
SICI code
1006-9313(200012)43:<69:IOTIMZ>2.0.ZU;2-R
Abstract
Detailed studies indicate that a typical island-are magmatic zone exists in the Lianghe-Raofeng-Wuliba area of south Qinling. This is characterized by continental marginal andesite and bimodal volcanic rock association which was formed in a rift environment within an oceanic island-arc. The island-a re magmatic zone is the product of Devonian-Carboniferous oceanic crust sub duction and rifting of Mianlue ancient oceanic basin. The presence of the i sland-are magmatic zone suggests that the Mianxian-Lueyang suture zone had extended to the Bashan arcuate area. The Sunjiahe volcanic rock association of the Xixiang Group formed in a volcanic-are setting which should have a close relationship with Mianlue suture zone.