查询词典 volcanic
- 与 volcanic 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Some other older zircons with 206Pb/238U ages of 932 to 2443Ma were brought from Precambrian basement rocks at depth by strong submarine volcanic eruption and then deposited in quartz albitite together with hydrothermal fluids.
其他较老年龄锆石是由强烈的海底火山喷发作用从深部基底物质中带出的,并与热水流体一起沉积下来,赋存在石英钠长石岩中。
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In this process, volcanic activity and increased land surface eroding provide a large number of nutritious elements for ocean. They made a worldwide alimental and anoxic ocean environment.
CO2浓度的升高(为现今的4~10倍)是火山排气作用的直接结果,其&温室效应&也被认为可能是促成白垩纪大气和海水高温的重要原因(高于现在10 ℃)。
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Bimodal volcanic rocks and A-type granite of 432~426Ma demonstrate that Altun enters to a extension stage of post-collision since then.
年龄为432~426Ma的双峰式火山岩和碱性花岗岩的出现,表明此时本区进入碰撞后的伸展阶段。
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The main sceneries are pillow shape basalt , amygdaloidal basalt , columnar jointing basalt , slaggy basalt and volcanic stone dragon .
主要现象有枕状玄武岩,杏仁状或气孔状玄武岩,柱状节理玄武岩,渣状熔岩和火山石龙。
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The host rocks mainly are meta andesitic dacitic volcanic rocks.
谱线特征为马鞍型,其底坪年龄为石英的结晶年龄。
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White Island, New Zealand, is an active andesitic volcano that is located near the southern end of the Tonga-Kermadec Volcanic Arc at the convergent plate boundary where the Pacific Plate is being subducted beneath the Indian-Australian Plate.
随著微波技术的日趋重要,对主动元件的要求愈来愈高,而砷化镓假形高电子迁移率电晶体在Ⅲ-Ⅴ族半导体中是一个很重要的元件,主要应用在军事和商业通讯的毫米波和微波频上。
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A complex suite of intermediate-basic to intermediate-acid and relatively alkaline volcano-intrusive rocks of dominant andesitic composition and a group of iron ore deposits of somewhat different genetic types associated with them, including late magmatic, pegmatitic, pneumato-hypothermal, pyrometasomatic, meso- to epithermal deposit and the possible ore-magmatic and volcanic-sedimentary deposits, which are the successive products of the magmatic evolution, widely distributed in the faulted basins in the mi...
在长江中下游的若干断陷盆地中,发育着一套中、基性到中、酸性而含碱较高的、并以安山质为主的火山-侵人杂岩,与这一套有关的岩浆的演化过程相联系,形成一组从岩浆晚期到伟晶、高温气液、高温接触交代、中、低温热液及可能的矿浆充填、火山喷发沉积成因的铁矿床。
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Meanwhile, the volcaniclastic rocks were modificated by the thermal fluid activity, for example, sericitization of plagioclase, chloritization of volcanic detritus in andesitic detris tuff; in the tufaceous mud, the thermal fluid activity accelerates "maturating" of the organic carbon by heating; and the trace elements show an anomaly in the wall rocks.
同时,受热流体活动的影响,热流体对火山碎屑岩具有一定改造作用,如在安山质岩屑凝灰岩中,斜长石绢云母化、火山岩岩屑绿泥石化明显;在凝灰质泥岩中,热流体对围岩中有机碳具有明显的&催熟&加热作用,微量元素则出现异常现象。
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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。
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The banded-augengranitic complex(476-413Ma) and charnokites (435Ma) in Yunkai upwelling area are formed in active continental margin Volcanic arc tectonic environment of subduction-collision in Caledonian and the augen granite and charnokiteare formed in the post-orogeny environment,and the intrusive gabbro(392Ma) are fromed in extensional environment of the end of Subduction-collision orogeny.
云开隆起区条带-眼球状花岗质杂岩(467-413Ma)及紫苏花岗岩(435Ma)形成于加里东期俯冲-碰撞活动大陆边缘火山弧构造环境,其中眼球状花岗岩、紫苏花岗岩形成于碰撞造山后环境,侵入辉长岩(392Ma)则是俯冲-碰撞造山作用阶段结束伸展环境下的产物。
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。