gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2017-8-3-0297gtcrust-438Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSDIACHRONOUS EVOLUTION OF BACK-ARC BASINS IN THE SOUTH TIANSHAN: INSIGHTS FROM STRUCTURAL, GEOCHRONOLOGICAL AND GEOCHEMICAL STUDIES OF THE WUWAMEN OPHIOLITE MÉLANGEDIACHRONOUS EVOLUTION OF BACK-ARC BASINS IN THE SOUTH TIANSHAN: INSIGHTS FROM STRUCTURAL, GEOCHRONOLOGICAL AND GEOCHEMICAL STUDIES OF THE WUWAMEN OPHIOLITE MÉLANGEWangBoWangBo

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, 

210093 Nanjing

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering,

210093 Nanjing

ZhaiYazhongZhaiYazhong

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, 

210093 Nanjing

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, 

210093 Nanjing

KappPaulKappPaul

Department of Geosciences, 

1040 E 4th St, Tucson, AZ 85721

Department of Geosciences, 

1040 E 4th St, Tucson, AZ 85721

De JongKoenDe JongKoen

College of Natural Science, School of Earth and Environmental Sciences,

Gwanak-guu Seoul 151-742

College of Natural Science, School of Earth and Environmental Sciences,

Gwanak-guu Seoul 151-742

ZhongLinglinZhongLinglin

State Key Laboratory for Mineral Deposits Research, 

210093 Nanjing

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, 

210093 Nanjing

LiuHongshengLiuHongsheng

State Key Laboratory for Mineral Deposits Research, 

210093 Nanjing

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering,

210093 Nanjing

MaYuzhouMaYuzhou

Urumqi 830011

Urumqi 830011

GongHujunGongHujun

State Key Laboratory of Continental Dynamics, Department of Geology, 

Xi’an 710069

State Key Laboratory of Continental Dynamics, Department of Geology, 

Xi’an 710069

GengHongyanGengHongyan

Department of Earth Sciences, 

Pokfulam Road, Hong Kong

Department of Earth Sciences, 

Pokfulam Road, Hong Kong

Nanjing UniversityКитайNanjing UniversityChinaUniversity of ArizonaСоединённые Штаты АмерикиUniversity of ArizonaUnited StatesSeoul National UniversityЮжная КореяSeoul National UniversityKorea, Republic ofSchool of Earth Sciences and Engineering, Nanjing UniversityКитайNanjing UniversityChinaGeological Research Academy of XinjiangКитайGeological Research Academy of XinjiangChinaNorthwest UniversityКитайNorthwest UniversityChinaUniversity of Hong KongГонконгUniversity of Hong KongHong Kong20171410201783581582Copyright © Wang B., Zhai Y., Kapp P., de Jong K., Zhong L., Liu H., Ma Y., Gong H., Geng H., 20172017Wang B., Zhai Y., Kapp P., de Jong K., Zhong L., Liu H., Ma Y., Gong H., Geng H.Wang B., Zhai Y., Kapp P., de Jong K., Zhong L., Liu H., Ma Y., Gong H., Geng H.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/438

The South Tianshan is located to the north of the Tarim block and defines the southern margin of the Paleozoic Central Asian Orogenic Belt (CAOB). This study presents new structural data, geochronological and geochemical results for the Wuwamen ophiolite mélange in the Chinese segment of the South Tianshan. In the south, the Wuwamen ophiolite mélange shows typical block-in-matrix fabrics and occurs in the footwall of a south-dipping thrust fault, hanging wall of which is composed of weakly metamorphosed and deformed Lower Paleozoic marine to deep marine sequences from the South Tianshan. In the north, a southdipping thrust fault juxtaposes the Wuwamen ophiolite mélange in its hanging wall against the high-grade and strongly deformed metasedimentary rocks from the Central Tianshan in its footwall.

The South Tianshan is located to the north of the Tarim block and defines the southern margin of the Paleozoic Central Asian Orogenic Belt (CAOB). This study presents new structural data, geochronological and geochemical results for the Wuwamen ophiolite mélange in the Chinese segment of the South Tianshan. In the south, the Wuwamen ophiolite mélange shows typical block-in-matrix fabrics and occurs in the footwall of a south-dipping thrust fault, hanging wall of which is composed of weakly metamorphosed and deformed Lower Paleozoic marine to deep marine sequences from the South Tianshan. In the north, a southdipping thrust fault juxtaposes the Wuwamen ophiolite mélange in its hanging wall against the high-grade and strongly deformed metasedimentary rocks from the Central Tianshan in its footwall.

National Nature Science Foundation of ChinaReferences

The authors declare that there are no conflicts of interest present.