| 扬子板块东北缘的随县－应山地区早古生代沉积盆地演化 |
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| 引用本文： | 杨振强,杨德骊,蒋德和.扬子板块东北缘的随县－应山地区早古生代沉积盆地演化[J].沉积与特提斯地质,1994(5). |
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| 作者姓名： | 杨振强 杨德骊 蒋德和 |
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| 作者单位： | 宜昌地质矿产研究所 |
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| 摘 要： | 位于扬子板块和大别变质地体之间的随－应地区，早古生代是一被动大陆边缘扩张盆地。根据沉积盆地基底、地层层序、沉积体系和火山岩亲缘关系，随一应地体的发展史可追溯到晚元古代，并划分为４个阶段：（１）晚元古代至早震旦世地壳上拱和拉伸阶段；（２）晚震旦世至早寒武世被动大陆边缘阶段；（３）中寒武世至奥陶纪海底扩张阶段；（４）志留纪至泥盆纪盆地充填回返阶段。本区沉积盆地发育模式是由大陆边缘裂谷盆地转化为前陆盆地模式。
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| 关 键 词： | 随－应地体，发展史，发育模式 |
EVOLUTION OF THE EARLY PALAEOZOIC SEDIMENTARY BASIN IN THE SUIXIAN-YINGSHAN REGION ON NORTHEASTERN MARGIN OF THE YANGTZE PLATE |
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| Yang Zhenqiang,Yang Deli,Jiang Dehe.EVOLUTION OF THE EARLY PALAEOZOIC SEDIMENTARY BASIN IN THE SUIXIAN-YINGSHAN REGION ON NORTHEASTERN MARGIN OF THE YANGTZE PLATE[J].Sedimentary Geology and Tethyan Geology,1994(5). |
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| Authors: | Yang Zhenqiang Yang Deli Jiang Dehe |
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| Institution: | Yichang Institute of Geology and Mineral Resources |
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| Abstract: | The Suixian-Yingshan terrane is an Early Palaeozoic spreading basin on the passive continental margin intermediate between the Yangtze Plate and Dabie metamorphic terrane.Based on the characteristics of the sedimentary basin basement, stratigraphic sequence,depositional system and volocanic rock affinity, the evolution of the sedimentary basin may be traced to Late Proterozoic and subdivided mainly into four stages for the Suixian-Yingshan terrane.(l)The crustal updoming and stretching stage from Late Proterozoic to Early Sinian (1000 700 Ma); (2)passive continental margin stage from Late Sinian to Early Cambrian (750 540 Ma);(3)Sea-floor spreading stage during Middle to Ordovician(540 439 Ma), and (4)basin filling and closing (foreland basin) stage from Silurian to Devonian (439 370Ma). The sedimentary model for the development of the basin in the study area reflects the conversion of a rift basin on the passive continental margin into a forelandd basin. |
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| Keywords: | Suixian-Yingshan terrance development history development model |
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