| 苏北高压-超高压变质变形作用与成矿 |
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| 引用本文： | 樊金涛,程振香.苏北高压-超高压变质变形作用与成矿[J].大地构造与成矿学,1998,22(1):65-74. |
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| 作者姓名： | 樊金涛 程振香 |
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| 作者单位： | 江苏省地质矿产调查研究所 |
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| 摘 要： | 苏北榴辉岩经历了5期以上变质变形作用，其中至少有两期高压或超高压变质变形作用。其pTt轨迹呈顺时针方向旋转。榴辉岩形成后，随着地体的反弹、推覆，于印支期末迅速回返到中地壳，再经燕山期-喜山期区域隆升和拉伸折返，最终剥露于现代侵蚀面。苏胶造山带至少经历了晋宁期、印支期和燕山期三次造陆或造山运动。苏北榴辉岩等的成矿组合为金红石、蓝晶石、金刚石、石榴红宝石及水晶等。
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| 关 键 词： | 榴辉岩 高压-超高压变质变形作用 造山运动 成矿 苏北 |
HP-UHP METAMORPHISM AND DEFORMATION IN NORTHERN JIANGSU AND ITS METALLOGENY |
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| Abstract: | Eclogites in northern Jiangsu have experienced more than five stages of metamorphism and deformation, and there are at least two stages of HP or UHP metamorphism and deformation. Their pTt trajectory rotates in clockwise direction. After the eclogites formed, because of the terrain rebounding and nappe from the upper mantle, they quickly came back up to the middle crust in Indo-Chinese epoch, and experienced regional doming and extension in Yanshan and Himalayan epochs. Last of all, they are exhumed to the earth surface. The SuJiao orogenic belt went through at least the Jinning, Indosinian and Yanshan orogenies. The metallogenic assemblages of eclogites and ultramafic rocks are rutile, kyanite, diamond, ruby (garnet) and crystal et al. |
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| Keywords: | Eclogite HP-UHP metamorphism and deformation orogeny metallogeny Jiangsu |
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