| 扬子克拉通北西缘碧口群的解体与地层划分 |
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| 引用本文： | 匡耀求,张本仁,欧阳建平. 扬子克拉通北西缘碧口群的解体与地层划分[J]. 地球科学, 1999, 24(3): 251-255,286 |
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| 作者姓名： | 匡耀求 张本仁 欧阳建平 |
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| 作者单位： | [1]中国科学院广州地球化学研究所 [2]中国地质大学地球化学研究所 |
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| 摘 要： | 碧口群组成十分复杂,论述了对其解体的必要性;解体出了包括鱼洞子花岗绿岩地体周缘的稳定陆缘沉积建造,扬子地台北西缘古元古代间裂谷型火山－沉积建造,中元古代洋壳残生及深海沉积物和新元古代的火山弧前盆地堆积,新元古代的残留地中海式堆积以造山后的山间盆地堆积等众多不同性质的构造地层单元;并对其形成过程作了初步讨论。
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| 关 键 词： | 碧口群 地层划分 构造环境 缝合线 元古界 |
DECOMPOSITION AND STRATIGRAPHIC SUBDIVISION OF BIKOU GROUP IN NORTHWESTERN MARGIN OF YANGTZE CRATON |
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| Kuang Yaoqiu,Zhang Benren,Ouyang Jianping. DECOMPOSITION AND STRATIGRAPHIC SUBDIVISION OF BIKOU GROUP IN NORTHWESTERN MARGIN OF YANGTZE CRATON[J]. Earth Science-Journal of China University of Geosciences, 1999, 24(3): 251-255,286 |
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| Authors: | Kuang Yaoqiu Zhang Benren Ouyang Jianping |
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| Abstract: | The stratigraphy in Bikou Group is rather complicated. The present paper deals with the necessity of the stratigraphic decomposition. Several distinctive tectono_stratigraphic units are defined through the decomposition. These units include the passive continental margin type of sedimentary formation around Yudongzi granite_greenstone terrain; the Paleoproterozoic intercontinental rift type of volcano_sedimentary formation along northwestern margin of Yangtze craton; the Mesoproterozoic oceanic crust residues and abyssal sediments as well as the Neoproterozoic fore_arc basin sediments; the Neoproterozoic Mediterranean sediments and post_orogenic inter_mountainous basin sediments. This paper also presents the preliminary discussion on their formation history. |
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| Keywords: | Bikou Group stratigraphic subdivision tectonic setting suture Proterozoic. |
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