Late Precambrian through Early Paleozoic stratigraphic and tectonic evolution of the Nanling region, Hunan province, South China
Late Precambrian through Early Paleozoic stratigraphic and tectonic evolution of the Nanling region, Hunan province, South China
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DOI：
10.1080/00206819709465285
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发表时间：
1997-05
影响因子：
2.6
通讯作者：
Chen Xu;D. Rowley;R. Jia-yu;Zhang Jin;Zhang Yuandong;Zhang Ren-bing
中科院分区：
文献类型：
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作者：
Chen Xu;D. Rowley;R. Jia-yu;Zhang Jin;Zhang Yuandong;Zhang Ren-bing
华南中东部的晚前寒武纪-志留纪构造演化分别经历了晚元古代、震旦纪和晚奥陶世-早志留世的裂谷、漂移和碰撞历史。本文回顾了该区的区域地层学发展，特别是以湖南省中北部为重点，并根据我们的观察和其他人的观察，认为南岭界的江南、雪峰和九岭大致划分了震旦纪至奥陶纪时期的古地理过渡，即沿着沿着一个被动型大陆边缘发展的陆棚环境向陆棚外环境过渡，该大陆边缘在前震旦纪-晚元古代开始裂陷。裂谷序列被记录在盆溪群（=板溪）中，该群不整合地位于一个更古老的推测为中-晚元古代早期的低级变质基底之上。本溪的厚度变化很大，但到处都是非海相到泥质碎屑相的特征。Penhsi符合光盘.
The Late Precambrian through Silurian tectonic evolution of east-central South China is modeled in terms of a history of rift, drift, and collision during Late Proterozoic, Sinian, and Late Ordovician-Early Silurian times, respectively. We review the regional stratigraphie development of this area, focusing particularly on north-central Hunan province, and argue from our observations and those of others that the Jiangnan, Xuefeng, and Jiuling ranges of the Nanling realm approximately demarcate the paleogeographic transition in Sinian to Ordovician times of shelf to off-shelf environments developed along a passive-type continental margin that started rifting in the pre-Sinian Late Proterozoic. The rift sequence is recorded by the Penhsi (= Banxi) Group, which rests unconformably above an older-presumed Middle to early Late Proterozoic-low-grade metamorphic basement. The Penhsi varies markedly in thickness but is everywhere characterized by nonmarine to paralic clastic facies. The Penhsi conformably to disc...