| 庐山隆起─滑脱构造 |
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| 引用本文： | 毕毕,项新葵.庐山隆起─滑脱构造[J].大地构造与成矿学,1998,22(1):21-28. |
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| 作者姓名： | 毕毕 项新葵 |
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| 作者单位： | 中国科学院地球化学研究所 |
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| 摘 要： | 庐山隆起-滑脱构造呈不对称状，西部外壳宽，出露地层完整；东部外壳窄，缺失地层较多，其内核为-开阔短轴背形，由早元古代星子群深变质及晚元古代、早古生代、中生代花岗岩组成。外壳由中元古代双桥山群浅变质沉积岩和细碧-石英角斑岩，晚元古代汉阳峰组浅变质流纹岩、细碧岩，晚元古代辉绿岩，震旦纪及后震旦纪未变质地层组成。内核与外壳间的接合面原是早元古代星子群与中元古代双桥山群间的平行不整合面，但在庐山隆起-滑脱构造形成过程中，受到了顺层韧性剪切作用及其以后其它构造作用的改造和破坏。以接合面为界，外壳自内向外，顺层韧性剪切变形变质、顺层韧性剪切固态流动褶皱变形由强至弱发生变化，直至无变形变质；而内核从接合面附近向内部，退变质作用逐渐消失。庐山隆起-滑脱构造是在西部挤压，东部拉张的伸展构造环境中形成的，经历了吕梁期雏形（或基础）、晋宁-加里东期形成发展及海西-喜山期改造三个阶段。
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| 关 键 词： | 隆起-滑脱构造 特征 演化 伸展构造 庐山 |
LUSHAN UPLIFT BEDDING-DELAMINATION STRUCTURE |
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| Abstract: | The Lushan Uplift Bedding-Delamination Structure(UBDS) is asymmetrical, and its western cover is wide and stratigraphically complete; the eastern,narrow and stratigraphically incomplete.The core is a wide brachyantiform and consists of Early Proterozoic Xinzi Group kata-metamorphite and Late Proterozoic, Early Paleozoic and Mesozoic granite. The cover is composed of Middle Proterozoic Shuangqiaoshan Group epimetamorphic sedimentary rock and spilite-keratophyre, Late Proterozoic Hanyangfeng formation epimetamorphic rhyolite, spilite, Late Proterozoic diabase veins, and the Sinian-Quatenary system. The contact plane was primarily a surface of parallel unconformity between the Xinzi and Shuangqiaoshan Groups, which was reformed and destroyed by bedding ductile shearing during the Lushan UBDS and other tectogenesis after that. From the contact plane outwards (to cover), the bedding ductile shearing, solid rheid folding, and insides (to core), retrograde metamorphism weaken. The Lushan UBDS was formed by the western detachment and eastern extension, which underwent three stages: Luliang cycle embryonic (or fundamental), JinningCaledonian cycle formation and development, and Hercynian-Himalaya cycle reformation. |
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| Keywords: | Lushan Uplift Bedding-Delamination Structure characteristics extensional tectonics evolution Lushan |
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