查询词典 volcanic activity

Stepping stones into the sea, these basaltic columns of the Giant's Causeway in Northern Ireland formed from volcanic activity some 50 million to 60 million years ago.

供踏脚的石头到海洋里，这些玄武岩的柱状物的巨大的堤道在北部的爱尔兰形成的从火山的活动约5000万年到6000万年以前。

Photo Gallery: Rocks Stepping stones into the sea, these basaltic columns of the Giant's Causeway in Northern Ireland formed from volcanic activity some 50 million to 60 million years ago.

供踏脚的石头到海洋里，这些玄武岩的柱状物的巨大的堤道在北部的爱尔兰形成的从火山的活动约5000万年到6000万年以前。

Silver and Behn also present geochemical evidence from ancient igneous rocks indicating that around one billion years ago there was a lull in the type of volcanic activity normally associated with subduction.

研究人员同时从远古的火山岩石中提取出地球化学证据来表明，大约10亿年前曾经有过一个短暂的停顿。停顿发生在火山活动正常期的俯冲阶段。

Fully considering the factors of structure, deposition, transforming system and Reservoir Forming Dynamics and so on, the paper thought that the reservoirs in Xiakou fracture zone belong to hydrocarbon remigration and secondary accumulation mode, the configuration relationship between the sands and faults is the main factor that affects hydrocarbon migration; reservoir gathers in the central upheaval zone belong to event hydrocarbon migration and accumulation mode, it can be divided into three styles, they are the fracture activity event mode, the volcanic activity event mode, he gravity flows event mode. The key factors of resulting in event reservoir are fault cyclicity and episodic characteristic.

充分考虑构造、沉积、输导体系和成藏动力等因素，分析认为：夏口断裂带油气藏聚集属于油气再运聚成藏模式，连通砂体与断层的配置是影响油气运移的主要因素；中央隆起带油气藏聚集属于油气事件成藏模式，划分为断裂活动事件成藏模式、火山活动事件成藏模式和重力流事件油气成藏模式三类，断层活动的旋回性和幕式性是诱发事件成藏的关键因素。

TAS diagram for these three kinds of volcanogenic detritus, combined with variation diagram for Al2O, FeO(superscript *), MgO, CaO, Na2O, K2O vs SiO2, shows that there may exist bimodal volcanic activity in the north margin of the South China Sea, brown volcanic glass and colorless volcanic glass represent basic end member and acidic end member respectively, and crystallization differentiation is the main process for magma evolution.

在硅碱图及Al2O3、FeO、MgO、CaO、Na2O、K2O对SiO2，的变化趋势图中可以判断，本区可能存在双峰式火山活动，褐色火山玻璃代表中一基性端元，而无色火山玻璃代表酸性端元。无色火山玻璃与褐色火山玻璃具有共同的岩浆源区，结晶分异可能是源区岩浆演化的主要方式。

The rate of volcanic eruptions as a model of the modern deformation constraints; collection and analysis of regional faults, geophysical and seismic data and the Cascadia region are given a series of maps of the region in order to understand the complexity of the organization structure; monitoring of Oregon and Washington areas and earthquake Volcanic activity.

将火山爆发速率作为现代变形模型的约束条件；收集和分析区域断层，地球物理及地震资料并给出Cascadia地区的系列地图以了解该地区的复杂构造组织；监测俄勒岗和华盛顿地区的地震及火山活动。

The West Yunnan area is a hotspot for geodynamical study, due to its peculiar geotectonic, both of genesis, monitoring and prediction of volcanic activity form the major objectivity in The International Disaster Reduction Program, broadband seismic data will inverse high-resolution information for the underneath structure in the West Yunnan and volcanic area.

滇西地区以其独特的构造环境，成为大陆动力学研究的热点地区之一；而火山活动的成因、监测与预报则是国际减灾计划的重要组成部分，宽频带地震资料的接收函数反演能够为滇西地区和火山地区的深部结构研究提供高分辨的信息。

The site contains a collection of resources including a photoglossary of volcanic terms; weekly reports of worldwide volcanic activity, prepared by the USGS Volcano Hazards Program and Smithsonian Institution's Global Volcanism Program; and current updates for US. and Russian volcanoes, prepared by USGS volcano observatories and the Kamchatkan Volcanic Eruption Response Team.

该网站包含了一个资源集合，内容包括：火山术语图解词汇表，由USGS火山危险计划和史密森学会全球火山活动计划提供的《世界火山活动周报》，由USGS火山观测站和Kamchatkan火山爆发响应小组提供的&美国与俄罗斯火山最新更新&。

It was floruit of volcanic activity in middle Caledonian between 446 Ma and 440 Ma. Mass volcanic rock was squirted, and ore bearing magma was risen by tectonic fissure, then formed a large-scale valuable polymetallic sulfide orefield.

随着构造岩浆活动的继续，能量的积聚，458.99Ma岩浆熔岩涌出地表，揭开了本区岩浆火山活动事件的序幕。446Ma～440Ma，是本区火山活动全盛时期，在本区大范围内形成有价值的多金属硫化物矿床。

The favorable conditions for petroleum accumulation due to volcanic activity and igneous rocks formed during the activity show in two aspects. A The contact surface of igneous rocks and the surrounding sedimentary rocks, like a vertical unconformity surface, formed the conduit of petroleum migration.Petroleum would accumulate once it encountered a trap in which the reservoir had fine porosity and permeability. B It formed a trap barriered by igneous rocks, or changed or cut the original trap.

火山活动以及由此形成的火成岩体对油气聚集的有利条件主要体现在两个方面：一是沿火成岩与围岩的接触面构成油气运移的通道，火成岩与围岩接触，似一直立的不整合面，与孔渗性好的岩层组合不仅能使油气运移而且遇有圈闭油气还会聚集成藏；二是构成火山岩遮挡的圈闭，或是对原有圈闭进行改造、分割。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。