Toward a stepwise Kwangsian Orogeny

The Kwangsian Orogeny originated along the southeast coast of China and stepwise developed in a northwest direction.It includes two stages,a long locally varying uplift from the Late Ordovician to the early Silurian and a finally tectonic movement near the Silurian and Devonian transition.The Kwangs...

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Bibliographic Details
Published in:Science China. Earth sciences 2014-03, Vol.57 (3), p.379-387
Main Authors: Chen, Xu, Fan, JunXuan, Chen, Qing, Tang, Lan, Hou, XuDong
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth science
Earth Sciences
Plate tectonics
Research Paper
Stratigraphy
东南沿海
局部变化
早志留世
晚奥陶世
构造运动
沿海区域
角度不整合
造山运动
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Summary:The Kwangsian Orogeny originated along the southeast coast of China and stepwise developed in a northwest direction.It includes two stages,a long locally varying uplift from the Late Ordovician to the early Silurian and a finally tectonic movement near the Silurian and Devonian transition.The Kwangsian uplift event shows a stepwise delay northwestwards from the southeastern coast area in Nemagraptus gracilis Biozone（Sa1）to the south side of the Xuefeng Mountains in or later than Cystograptus vesiculosus Biozone（R3）to Coronograptus cyphus Biozone（R4）.In the southern of Yangtze Platform,the Yichang Uplift was droved by the Kwangsian Orogeny forming a diachronous stratigraphical break through Rhuddanian and Aeronian.The distribution of the early Telychian lower marine red beds indicates a northwestward increase of the Cathaysian Oldland.Stratigraphical evidence may explain why the Kwangsian movement was marked by an angular disconformity during the Pridoli to earliest Devonian interval.
ISSN:1674-7313
1869-1897
DOI:10.1007/s11430-013-4815-y