| 一个被动大陆边缘的“开”“合”史及找矿标志——以赣西北震旦系至下古生界为例 |
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| 引用本文： | 蔡雄飞,张雄华,熊清华. 一个被动大陆边缘的“开”“合”史及找矿标志——以赣西北震旦系至下古生界为例[J]. 江西地质科技, 1997, 0(2) |
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| 作者姓名： | 蔡雄飞 张雄华 熊清华 |
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| 作者单位： | 中国地质大学，中国地质大学，江西地质矿产勘查开发局地矿调研大队 武汉工程师，武汉 |
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| 摘 要： | 本文根据赣西北地区震旦系至志留系基本层序和板内构造演化,可把古板块构造发展划分为4个阶段:开裂期(Z_1l-Z_2p)以中、小规模的重力流和凝缩段为特征;成熟发展期(∈_1-∈_3~1),以沉降沉积作用为主;萎缩期(∈_3~2-O_2h)以大规模重力流和混生动物群为特征;闭合期(O_3-S_3)以双幕式沉积为特征。同时阐述了在板块发展的各个阶段,不能忽视其成矿作用。
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| 关 键 词： | 板块开合 基本层序 找矿标志 赣西北 |
The "Rifting and Closing" History at a Passive Continental Margin and Guides to Ore: Exemplified by the Sinian - Lower Paleozoic in Northwest Jiangxi |
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| Cai Xiongfei Zhang Xionghua Xiong Qinghua. The "Rifting and Closing" History at a Passive Continental Margin and Guides to Ore: Exemplified by the Sinian - Lower Paleozoic in Northwest Jiangxi[J]. , 1997, 0(2) |
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| Authors: | Cai Xiongfei Zhang Xionghua Xiong Qinghua |
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| Abstract: | Based on fundamental stratigraphic sequence and intra - plate tectonic evolution from Sinian to Silurian times, plate tectonics in Northwest Jiangxi is divisible into four stages: 1. the rifting stage (Z1l - Z2p)charac-terized by small - scale gravity flow and condensed member; 2. the mature development stage( )characterized by subsidence and sedimentation; 3 the dwindling stage( -O2h) characterized by large- scale gravity flow and intermingling fauna; and 4. the closing stage(O3 -S3) characterized by two - phase sedimentation. Mineralizations in these four stages of plate tectonics development have also been dealt with briefly in this paper |
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| Keywords: | rifting and closing of plate fundamental stratlgraphic sequence guides to ore Northwest Jiangxi |
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