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exotic block
相关语句
  外来岩块
     A DISCUSSION ON THE EXOTIC BLOCK ON NORTHERN SLOPE OF THE HIMALAYAS AND THEIR ORIGIN
     喜马拉雅山北坡的外来岩块及其成因的讨论
短句来源
     THE DISCOVERY OF EXOTIC BLOCK IN CARBONIFEROUS STRATUM IN JAYIR MOUNTAIN OF WESTERN JUNGGAR AND ITS GEOLOGICALSIGNIFICANCE
     西准噶尔地区加依尔山石炭纪地层中外来岩块的发现及其地质意义
短句来源
     It formed in Precambrian. The researches on the profile and the geological mapping show that it is a tectonic slice with very strong deformation in the Longmen Mountain nappe belt, and that it is an exotic block deformed by the Strong tectonic Strain during the nappins from an ancient complex.
     剖面研究和1:5万区域地质填图表明,它是处于龙门山中段推覆构造带中的一个构造变形十分强烈的构造片体,是推覆过程中经受了强烈改造的一个古老杂岩体的外来岩块
短句来源
  “exotic block”译为未确定词的双语例句
     The exotic block got nappe and slip from northwest to southeast,with the sliding distance over 7 km,the length of strata shortened about 5 times and the thickness of strata increased 3 times.
     外来岩体由北西向南东推覆滑动,滑移距离在7km以上,地层长度缩短5倍左右,地层厚度增加3倍。
短句来源
     Geochemical divergence between the matrix system and exotic block system in the Naij Tal and Wanbaogou groups in the East Kunlun Mountains
     东昆仑格尔木南部纳赤台群和万宝沟群基质系统与外来系统地球化学差异
短句来源
     The strata of exotic block incude D, C, P and T1, whose main constitutent is carbonatite. The strata of autochthonous rock are T3 and J, which contain mainly clasolite, shale and coal. The big structure in the autochthonous rock is simple, but the small one is complex.
     彭灌飞来峰群为龙门山飞来峰群之一部,外来系统地层包括D、C、P、T1,岩性主要为碳酸盐岩,原地系统有T3、J,岩性主要为含煤碎屑岩、泥岩。
短句来源
     The ophiolite zones in Zaheba region belong to Zaheba-Aermantai ophiplite belt and consist of non-stratified serpentinite, metugabbro, epidiabaSe, meta-basic volcanic rock,siliceous rock and exotic block.
     扎河坝地区蛇绿岩带属扎河坝—阿尔曼太蛇绿岩带之组成部分,主要由无序的蛇纹岩、变辉长岩、变辉绿岩及少量变质基性火山岩、硅质岩构成其主体。
短句来源
     The Songshugou Ophiolite(SSGO) piece from Shangnan Country might be formed at MiddleProterozoic period(1100 ̄1250Ma), and emplaced at 980Ma. It is possible that the SSGO is an exotic block andunderwent amphibolitic factes metamorphism.
     商南松树沟蛇绿岩是残留于造山带根部的角闪岩相变质的蛇绿岩片,可能是中元古代(1100Ma~1250Ma)形成的,于980Ma左右构造侵位。
短句来源
更多       
  相似匹配句对
     Block and Z.
     B lock和Z.
短句来源
     Gypsum block
     石膏砌块
短句来源
     A DISCUSSION ON THE EXOTIC BLOCK ON NORTHERN SLOPE OF THE HIMALAYAS AND THEIR ORIGIN
     喜马拉雅山北坡的外来岩块及其成因的讨论
短句来源
     THE DISCOVERY OF EXOTIC BLOCK IN CARBONIFEROUS STRATUM IN JAYIR MOUNTAIN OF WESTERN JUNGGAR AND ITS GEOLOGICALSIGNIFICANCE
     西准噶尔地区加依尔山石炭纪地层中外来岩块的发现及其地质意义
短句来源
     THE FOUNDATION OF EXOTIC STUDIES
     异国情调研究的基础
短句来源
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Based on the data collected in the recent years by the scientific expedition in the Qinghai-Xizang region, the principal structural features of Himalayas and Qinghai-Xizang Plateau are discussed from viewpoint of plate tectonic theory.In the light of a lot of data, such as on the geological history, the sedimentary characteristics, the distribution of Gondwana sedimentary facies, ophiolite suite, melange and exotic blocks, the crustal deformation nature, the regularity of magmatic activity and paired metamorphic...

Based on the data collected in the recent years by the scientific expedition in the Qinghai-Xizang region, the principal structural features of Himalayas and Qinghai-Xizang Plateau are discussed from viewpoint of plate tectonic theory.In the light of a lot of data, such as on the geological history, the sedimentary characteristics, the distribution of Gondwana sedimentary facies, ophiolite suite, melange and exotic blocks, the crustal deformation nature, the regularity of magmatic activity and paired metamorphic belt on both sides of Yarlung Zangbo River, this work deals with the pattern and nature of plate motion, makes a subdivision of Himalayan orogeny and gives a preliminary analysis of its character as well.A possible model on formation of Qinghai-Xizang Plateau by multi-underthrusting and multi-matching is presented and it is suggested that the Bangong Co-Dongqiao tectonic belt can probably serve as the northern boundary of Gondwana land. And we propose a new mechanism that the Yarlung Zangbo Jinag tectonic belt was opened in Mesozoic and closed in Early Tertiary.

本文根据近年来对青藏高原广泛开展的考察所积累起来的实际材料,以板块构造观点,简要讨论了青藏高原主要构造特征。文章以地质历史、沉积特征、冈瓦纳相沉积、蛇绿岩套、混杂岩和外来岩块的分布、变形特征、岩浆活动的规律以及雅鲁藏布江两侧变质带的特点,论证了喜马拉雅地区板块活动的方式和特征,对喜马拉雅运动进行了分期并对各期运动的性质作了分析。文章提出了冈瓦纳大陆的北界可能是班公湖—东巧构造带以及雅鲁藏布江构造带在中生代拉开、早第三纪闭合机制的新设想。

The exotic blocks on northern slope of the Himalayas described in present paper are the relics of rock blocks transported in a long distance in the process of subduction and collision. Genetically, they are distinguished from both klippe and nappe as well as from melanges and olistostromes because they are not the result of mixing with allochthonous rocks. The characteristics of exotic blocks on northern slope of the Himalayas are presented as follows:1. They distribute on the southern side...

The exotic blocks on northern slope of the Himalayas described in present paper are the relics of rock blocks transported in a long distance in the process of subduction and collision. Genetically, they are distinguished from both klippe and nappe as well as from melanges and olistostromes because they are not the result of mixing with allochthonous rocks. The characteristics of exotic blocks on northern slope of the Himalayas are presented as follows:1. They distribute on the southern side of Yarlun-Zangbo Jiang suture, in a narrow longitudinal belt on the northern border of the Indian plate.2. These blocks are composed mainly of Permian brittle limestones.3. Their gentle occurrence and the overturning of drag folds to wards the south indicate that these exotic blocks were transported from the north.4. The source of these exotic blocks is quite different because, faunistically, they reflect different sedimentary environments. Basing on the characters of faunal assemblage and lithologic correlation, the origin of these exotic blocks may be distinguished into three types: the subduction, the obduction and the compression. They are all formed by the northward subduction of the Indian plate down the Eurasian plate and the collision between them.

本文所描述的外来岩块是指在板块俯冲、碰撞的作用下,经过远距离的搬运残留下来的岩石块体。喜马拉雅山北坡外来岩块的主要特点是:多数由二叠纪厚层石灰岩组成,出露于雅鲁藏布缝合线附近和由北往南的运动性质。根据岩性、古生物的特征,它的成因可分为三种类型:俯冲型、仰冲型和挤压型。它们是在印度板块向北移动同欧亚板块俯冲、碰撞过程中,产生下部(印度板块)向北,上部(欧亚板块)往南的一对水平空间力偶的作用而形成的。

In the eastern section of the Qinling geotectonic belts, the authors discovered an ancient subduction zone at the northern foot of the Mt. Dabie near Xinyang, Henan province. The subduction complex consists of ophiolites, melanges and low-T/high-P metamorphic rocks. The melanges are composed of native blocks (dolomite-marble, olisto-strome), exotic blocks (serpentinite, issite, hornblendite, granite, gabbro, chert, etc.) and argillo-arenaceous matrix. The suite of ophiolite includes metamorphosed...

In the eastern section of the Qinling geotectonic belts, the authors discovered an ancient subduction zone at the northern foot of the Mt. Dabie near Xinyang, Henan province. The subduction complex consists of ophiolites, melanges and low-T/high-P metamorphic rocks. The melanges are composed of native blocks (dolomite-marble, olisto-strome), exotic blocks (serpentinite, issite, hornblendite, granite, gabbro, chert, etc.) and argillo-arenaceous matrix. The suite of ophiolite includes metamorphosed basic volcanic rocks, diabase dykes, metamorphic pelites, basic and ultrabasic magmatic rocks. The essential characteristics of the suite are coincident with those of the island-arc ophiolites. 3T-phengites and C-type eclogites have been found in the low-T/high-P zone of meta-morphism. According to their general tectonic character the subduction complex was produced by a marginal sea floor underthrusting southwards beneath an island-arc. The acorites, sampled from the low-T/high-P zone, have been dated at 693-603 Ma by U-Pb age determination. The quartz-diorites, which intruded into the ophiolitic suite, have been dated at 413.5 Ma by K-Ar age determination. These ages imply that the subduction zone was formed in the end of Late Proterozoic.We suggest that the structural evolution of the ancient convergent plate margins should be divided into following three episodes.(1) During Late Proterozoic (about 700-800 m.y. B.P.), the oceanic crust of the East Qinling Sea underthrusting northwards beneath the continental block of North China, which gave rise to the Tongbai island, is associated with a marginal sea.(2) Nearly in the end of Late Proterozoic (about 700-600m.y. B.P.), a polarity reversal of this subduction zone occurred. The oceanic crust of the marginal sea was consumed beneath the Tongbai island arc, which resulting in the Xinyang subductio ncomplex.(3) During Early paleozoic (about 600-500m.y. B.P.), the oceanic crust of the East Qinling Sea was subducted northwards again beneath the accreted continental margin along a new Benioff zone.

在秦岭构造带东段大别山北麓的河南信阳附近,作者发现了一个古消减带,其中消减杂岩由蛇绿岩:混杂岩及低温高压变质带的岩石组成。推断古板块会聚边缘的构造发育史可以划分为以下三个阶段: Ⅰ、晚元古代(约800—7000百万年前),东秦岭古洋壳向北朝华北古陆之下俯冲,产生了初始的桐柏岛弧及弧后的边缘海。 Ⅱ、元古代末(约700—600百万年前),俯冲带极性反向,边缘海洋壳向南朝桐柏岛弧之下消减,从而产生了信阳消减杂岩。 Ⅲ、早古生代初(约600—500百万年前),边缘海闭合,桐柏岛弧增生于华北古陆的南缘,东秦岭古洋壳沿岛弧之南的一个新贝尼奥夫带再次向北俯冲。

 
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