查询词典 volcanism

Taking the eastern sag of the Liaohe basin where coal, oil and gas resources coexist and the Wangying borefield of the Fuxin basin where coalbed gas was first discovered, researched and developed in China as examples, we systematically discuss the control of volcanism on the lateral and vertical distribution of brown coal, flame coal and gas coal in the third member of the Paleogene Shahejie Formation and on the gas source conditions of each coal region. Both the methane released in the process of regional plutonic metamorphism and the additional methane generated by contact metamorphism are calculated. The physical properties and storage capacity of the coal beds changed greatly, due to the formation of blackcoal and highly-metamorphosed crevice coal from igneous intrusion. The sealing capacity of intrusions with various occurrences such as dikes is highlighted.

以煤、油、气共生的辽河盆地东部凹陷和我国首次在矿井中发现、研究、开发煤层气藏的阜新盆地王营井田为例，系统地阐述了火山活动在古近系沙河街组三段对褐煤、长焰煤和气煤在平面及垂向分布的控制，进而导致各赋煤区气源条件的不同；估算了王营井田在区域深成变质过程释放甲烷气的基础上，接触变质作用所形成的附加甲烷量；指出由于岩浆侵入形成了天然焦和高变质裂隙煤，使煤层物理性质及储集能力发生了大的变化；强调了岩墙等不同产状的岩浆侵入岩体对煤层气的封闭作用。

Magmatism in the form of volcanism and plutonism is predominant in the diwa maximummobility period which results in thick volcanic rock and all big intrusive bodies in the area.

岩浆作用(包括火山作用和侵入作用)在北京西山地洼激烈期中有强烈的表现，形成区内巨厚的火山堆积和大规模的侵入体。

A reanalysis of the Mariner data provides some preliminary evidence of recent volcanism on Mercury.

阿的水手再分析数据提供了一些初步证据最近的火山活动在水星。

The understanding on the genesis of the ore-hosted dolostone in the Bayan Obo deposit can be summed into 4 categories:① normal sedimentation,② magmatism,③ volcanism at sea-bottom, and ④ hot-water sedimentation.

前人对白云鄂博矿床赋矿白云岩的成因主要有4种认识：①正常沉积；②岩浆侵入；③海底火山喷溢沉积；④与深源热卤水有关。

Which provide evidence to study the influences of volcanism on sedimentary environment.

这些沉积相提供了研究火山作用对沉积环境影响的依据。

In particular, a period of rifting /relative sea-level fall occurred in the late Givetian-early Frasnian and resulted in the reactivation of basement lineaments as normal faults, basic volcanism and subaerial exposure in much of Novaya Zemlya.

尤为特别的是，中泥盆世晚期至晚泥盆世早期曾发生一个时期的断裂/相对海平面下降，从而造成了底层线型构造再生为新地岛大部的正断层、基性火山活动和地缘暴露带。

Based on the subcrustal mantle convection-generated stress field inversed by gravity anomalies, together with its relationship to the Cenozoic volcanism in the plateau, and the mechanism of crustal fracture formation, as well as the numerical results of the evolution of mantle convection beneath the plateau, this paper investigates the deep mechanical mechanism for the formation of a magma transportation channel in the Tibetan Plateau.

为了研究火山形成基本要素―岩浆运移通道的形成，基于重力异常反演的青藏高原下地壳底部的地幔对流应力场，结合地壳破裂形成机理和对流应力场与青藏高原新生代火山分布的关系，以及青藏高原下地幔对流演化的数值模拟结果，分析了高原火山岩浆运移通道产生的深部力学机制。

In second part of this dissertation, we computed the thermal consequences of active ridge subduction in arc volcanism.

在第二部分的研究工作中，我们首先对活动海岭俯冲全过程进行了热模拟计算，得到了海岭俯冲对岛弧地质过程影响的较详细的定量结果，讨论了活动海岭俯冲与岛弧火山活动热演化特征。

At the same time, we hoped to learn about processes of volcanism that have rarely been observed before.

同时我们希望弄清过去很少能观察到的火山作用过程。

Since it is a volcanic park, there are lots of illustrations describing the history and the force of volcanism.

由於它是个火山公园，因此就有许多的标示来说明火山作用的影响和历史。

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。