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首页> 外文会议>International geological congress;IGC; 19960804-14;19960804-14; Beijing(CN);Beijing(CN) >FORMATION AND EXHUMATION OF THE ECLOGITE BELT IN THE DABIE MOUNTAINS, EASTERN CHINA
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FORMATION AND EXHUMATION OF THE ECLOGITE BELT IN THE DABIE MOUNTAINS, EASTERN CHINA

机译：中国东部大别山榴辉岩带的形成与剥蚀

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摘要

The UHPMB occurs in the south of the Dabie Mountains in the crntre of eastern China, and geologically between the Yangtze (to the south) and North China (to the north) continental plates. Dabie Mts. connects the Tongbei and then Qingling orogen to the west, and is truncated at its east end by the Tan-Lu fault of which the Su-Lu orogen is believed to be the displaced segment of the Dabie Mountains by the correlation of the similar tectono-petrologic units including the eclogite belt in both. The UHPMB is composed of eclogitic blocks and matrix, mainly gneisses of eclogite facies, and surrounded by the granitoid gneisses of amphibolite facies namely low pressure gneisses (LPG) referred to Dabie Complex, the underthrust basement of the Yangtz continental plate. To the immediate south, there is the phosphorous series of greenschist facies, namely Susong Group (Burearu of Geology and Mineral Resources of Anhui Province, 1987), referred to underthrust cover of the Yangtze continental plate. The foreland belt is located in the south of Susong Group and composed of intensively deformed but unmetamorphosed cover of Yangtze continental plate separated by molasse deposits. The eclogite belt graduates to the north into an ophiolite melange, eyen though some one disagree with the existance of such an ophiolite melange. The meta-flysch of early Paleozoic is on the north side of the ophiolite melange (Fig. 1).
机译：UHPMB发生在中国东部沿海大别山的南部，地质分布在长江（南部）和华北（北部）大陆板块之间。大别山将通贝和青岭造山带连接到西部，并在其东端被the庐断层截断，通过类似构造运动的相关性，苏-造山带被认为是大别山的位移段。岩石学单元，包括两者中的榴辉岩带。 UHPMB由角砾岩块和基质组成，主要是榴辉岩相片麻岩，周围是角闪石相的花岗岩片麻岩，即低压片麻岩（LPG），简称大别复合体，是扬子大陆板块的下冲基底。在最南端，有一系列的磷绿岩相，即苏松群（安徽省地质矿产局，1987），被称为扬子板块的下推覆层。前陆带位于苏松群的南部，由强烈变形但未变质的扬子大陆板块覆盖，并由糖蜜沉积物隔开。榴辉岩带向北渐渐变成蛇绿岩混杂物，尽管有些人不同意这种蛇绿岩混杂物的存在。早古生代的间断复理在蛇绿岩混杂岩的北侧（图1）。

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