洋盆

词组短语

oceanic basin

与洋盆相关的网络例句 [注：此内容来源于网络，仅供参考]

A combination of regional geology and geochemistry indicates the Cambrian and Ordovician evolution in the south of central Asian zone is charactelized by complex collages between continental blocks with island arcs under the compressional background perhaps related to the final convergence within Gondwanaland, the so-called late Pan-african movement.

综合地质对比显示，古亚洲洋南部和相邻的秦祁昆洋区域在寒武－奥陶纪期间的演化以小洋盆，中小型陆块相间的复杂构造格局为特征，在可能与晚泛非运动有关的整体汇聚背景下普遍出现强烈的岛弧型岩浆作用和活跃的岛弧拼贴、陆壳增生过程。

1:250000 geological mapping has further revealed the mysteries of the tectonics of the Qinghai-Tibet Plateau. The Altun Mountains are not of the Tarim massif, but a part of the Kunlun-Qilian-Qinling orogenic system; the Altun fault is a large transform fault; the Muztag-Maqên suture zone and Jinshajiang suture zone are both Variscan ones; the Songpan-Garzê area in the Triassic was a huge turbidite basin on the southern margin of Laurasia; the Gangdise belt underwent the important Indosinian orogenic movement; an ocean basin that persisted from the Paleozoic to Triassic did not exist, i.e. the so-called Paleo-Tethys or permanent Tethys was not in existence in the Qinghai-Tibet Plateau. In the Paleozoic, most parts of China, including the Sino-Korean, Yangtze and Tarim massifs and the Qinghai-Tibet Plateau, were located in south of the main ocean basin—the Central Asian-Mongolian sea way—of the Paleo-Asia ocean, belonging to the northern margin of Gondwana. The Yarlung Zangbo and Bangong -Nujiang belts were twins in the Tethyan Ocean, which began to develop into two ocean rift belts in the Triassic. The Tethyan Ocean with the Yarlung Zangbo belt as the main ocean basin belt began to be subducted in the Late Triassic and experienced a process of pulsatory plate convergence orogeny including the Indosinian, Yanshanian and Himalayan stages.

1：25万地质填图进一步揭开了青藏高原地区大地构造的奥秘：阿尔金山是昆仑，祁连-秦岭造山系的一部分；阿尔金断裂确是一条大型转换断层；木孜塔格-玛沁缝合带和金沙江缝合带均是华力西缝合带；松潘甘孜三叠系沉积盆地是劳亚大陆南部边缘的浊积岩盆地；冈底斯带曾经历了重要的印支造山运动；不存在从古生代延续到三叠纪的大洋盆地，即不存在所谓古特提斯或永久特提斯；古生代时期，在青藏高原地区亦不存在具古生物，古地理分隔意义的大洋盆地，当时，包括中朝，扬子，塔里木以及青藏高原地区在内的中国大部分均位于古亚洲洋主洋盆——中亚-蒙古带之南，属冈瓦纳大陆结构复杂的北部边缘；雅鲁藏布江和班公湖-怒江带是特提斯洋中的孪生姊妹，它们均是从三叠纪起就发展成大洋裂谷带的；以雅鲁藏布江带为主洋盆带的特提斯洋，从三叠纪晚期开始消减，经历了印支，燕山，喜马拉雅3个阶段脉动式板块汇聚造山过程。

This paper briefly introduces the basic fact of the existence of the PaleoTethys Ocean in the Lungmu Co-Shuanghu suture, i.e. the ages and natures of Early Paleozoic ophiolites, Permian ophiolites, Devonian-Permian radiolarian cherts, accretionary slabs of different natures, two types of tectonic mrlange zones and covers of ophiolites. The starting time of the Paleo-Tethys Ocean in Qiangtang may be traced back to Early Paleozoic and the records about the oceanic basin evolution persisted from the Late Devonian to Late Triassic.

简要介绍了龙木错-双湖缝合带中有关古特提斯洋存在的基本事实，即早古生代洋壳残片、二叠纪蛇绿岩、泥盆纪-二叠纪放射虫硅质岩、各类不同性质的增生岩片、2种类型的构造混杂岩带和蛇绿混杂岩盖层体系的时代与性质等，已有的资料初步确定羌塘古特提斯洋盆演化的时限为晚泥盆世到晚三叠世。

The age of MORB-type metabasic volcanic rocks is(1462± 28) Ma using the SHRIMP zircon U-Pb method.The presence of MORB and IAT assemblages suggests the existence of an ocean basin in Yunkai area,Guangxi,southwestern South China Block during Grenvillian.They probably defined as a part of archipelagic ocean system before South China has formed unified Rodinia during the Grenvillian orogeny.Cathaysia block and Yangtze block have experienced continent-continent collision orogenics behind this ocean basin subducted,and have formed unified Rodinia.

MORB和 IAT组合的出现说明位于华南板块西南端的广西云开地区在 Grenville期可能存在过洋盆，它们很可能代表了 Grenville期造山作用形成统一的 Rodinia超级大陆以前的一个&多岛洋盆&系统，华夏古陆和扬子板块可能在该古洋盆于新元古代早期发生的全球性 Grenville期造山运动而发生消减消失后才开始碰撞和造山，形成统一的 Rodinia超级大陆。

This age stands for the formation time of the ocean basin of Xiugugabu-Daba Tethys, and is very close to that of the middle part of the Yarlung-Zangbo suture zone (126±1.5 Ma). This outcome provides a well chronologic condition for discussing the palaeotectonic framework and the evolution of the Tethys basin in the study area. In addition, the forma...

该年龄代表了休古嘎布-达巴特提斯洋盆的形成时代，与雅鲁藏布江缝合带中段洋盆形成时代(126±1.5Ma)相当，此结果对于确定研究区特提斯洋盆的古构造格局及其发育演化过程等提供了重要的年代学制约。

Therefore, Changning-Menglian ocean basin is a small-scale in tercontinental rift ocean basin, and formed by pull-apart and spreading on the basis of the epeiric sea after Caledonian movement.

因此，昌宁-孟连带洋盆为一宽度不大的小型陆间裂谷洋盆，是在加里东运动之后的陆表海基础上经拉裂扩张而成。

However, relating to investigate the modes, courses and characteristics of the orogenetic process in Paleozoic and after orogenetic process, the cognitive divergence have still occurred.

通过对新疆北东部地区不同构造区带构造作用的方式、过程和特点的研究，确定：①南天山榆树沟高压麻粒岩地体的正变质原岩是一个基本完整的蛇绿岩套，其经历了俯冲至下地壳的高压麻粒岩相、构造抬升至深地壳麻粒岩相以及快速构造折返至角闪岩相的变质过程，代表了南天山洋壳俯冲、变质、随后折返的过程，并首次确定了变质过程的PTt轨迹；②奥陶纪末期中天山北缘发生洋盆俯冲、地体增生作用，此时萨日达拉地区处于岛弧活动带；中石炭世晚期中天山小型洋盆关闭，准噶尔地块与伊犁—中天山板块斜向对接随后发生脆韧性质近水平高温低速右行走滑剪切；③根据巴音沟地区不构成蛇绿岩套有效成分的硅质岩具有与活动大陆边缘密切相关的地球化学特征以及洋中脊玄武岩显示其岩浆源区受到消减带流体交代作用的影响，结合区域地质资料，首次提出巴音沟蛇绿岩带所代表的洋盆古构造环境为弧后盆地，并于早石炭世至中石炭世末期间，经历了扩张、收缩和闭合过程；④首次在克拉麦里蛇绿混杂岩带中分解出具有N-MORB、T-MORB与OIB三种不同类型的火山岩岩石组合，反映了洋盆俯冲

The forming of non- Smithian strata are expounded at theory level.

以殷鸿福等（1998）归纳总结的非威尔逊旋回理论为指导，从理论上阐述了非史密斯地层形成过程：造山带区古大洋相当复杂，尤其是中国古特提斯域古大洋，多为多岛洋，多岛洋是一个宽阔的但不干净的洋，它在其各个演化阶段，始终充满着由裂解地块、裂谷、海道、微板块与次级小洋盆、火山岛弧、海山与边缘海等不同裂离与聚合程度的、海陆相间的多岛洋盆；多岛洋盆在其整个洋陆转化进程中，往往所经历的是多期开合与多期次软碰撞，故由非威尔逊旋回转化而来的造山带混杂岩带地层一般都经历过多期强烈的构造混杂，使造山带演化不同期次、同期次不同阶段、不同大地构造相、不同沉积古地理单元、不同构造层次地层体在极短程内相互拼贴、无序叠置。

And then a local extension took place in the region of intra-Eastern Tethys when the India plate drifted to the north but suffered the resistance from the Lhasa block, contemporarily, the intra-oceanic subduction are triggered, subsequently, magmas derived from a partial melting of mantle wedge which suffered from the modification by subducted continental marginal clastics and oceanic sediments upwelled along the oceanic ridges, forming several small marginal basins during 120～128 Ma, and thus lead to the so-called SSZ-type oceanic crust.

于120～128Ma，一些规模较小的边缘洋盆形成，卷入陆缘碎屑和洋壳沉积的地幔楔发生熔融产生岩浆，沿着破裂的扩张脊上涌产生了具有TNT负异常的SSZ型新洋壳，期间产生了俯冲洋壳重熔作用，标志着年轻的热的洋壳俯冲形成的埃达克岩侵入于仁布SSZ蛇绿岩地幔橄榄岩中。

Based on analysises of characteristics of regional deformation and metamorphism as well as Carboniferous and Permian relict basins, think Qinling-Dabie orogenic belt might have undergone following Basin-mountain transformational process : the ocean basin developed in Silurian-early Paleozoic; ocean basin subduction began in Ordovician; Silurian-early Devonian continent-continent collision happened and the ocean basin disappeared; Carboniferous- Permian, with the strike-slip and pull-apart along the Shangdan fault, a series of small faulted basins formed on the north Qinling mountainous region composing of Pre-Carboniferous metamorphic stratum.

在解析区域变形变质特征，岩浆侵位的构造演化和北秦岭区石炭—二叠纪残余盆地分析基础上，认为秦岭—大别造山带现今的残余的加里东造山带，可能经历了震旦纪—早古生代洋盆发育，奥陶纪洋盆俯冲，志留纪—早泥盆世碰撞造山，洋盆消失，石炭—二叠纪沿商丹带走滑拉分断陷形成上叠于北秦岭加里东造山带之上的石炭—二叠纪沉积盆地的盆山转换过程。

与洋盆相关的网络解释 [注：此内容来源于网络，仅供参考]

nascent hydrogen：初生氢,初生态氢

nascent fibre 初生纤维 | nascent hydrogen 初生氢,初生态氢 | nascent ocean 新生洋盆

nascent oxygen：初生氧,新生态氧

nascent ocean 新生洋盆 | nascent oxygen 初生氧,新生态氧 | nascent state 新生态,初生态

reappraisal：重新估价

reapportion 重新分配 | reappraisal 重新估价 | rear arc oceanic basin 弧后洋盆

molasse：磨拉石

天山及其邻区下石炭统与下伏地层间的规模巨大的区域性角度不整合界面以及该不整合界面之上的磨拉石(molasse)砾岩建造,就是天山古生代洋盆体系闭合后碰撞-造山作用的地质记录.

eustasy：海面升降

1906年 休斯(E.Suess)提出(全球)海面升降(eustasy)理论 认为沉积物增加会引起全球性海面上升;地壳沉降形成洋盆时 则引起海面下降. 意指 海进和海退是洋盆容积变化的结果 全球性海面变化并不包括海水量的增减.

ocean basin：海洋盆地; 大洋盆地; 洋盆

observing ship station 观测船站 | ocean basin 海洋盆地; 大洋盆地; 洋盆 | ocean chemistry 海洋化学

ocean basin：大洋盆地

ocean basin floor 洋盆区 | ocean basin 大洋盆地 | ocean bed 海底

ocean basin floor：洋盆区

ocean basalt 大洋玄武岩 | ocean basin floor 洋盆区 | ocean basin 大洋盆地