火山岩

The acid volcanic rocks of the Early Cretaceous Shangkuli Formation belong to continental crust anatexis type ones (S-type volcanic rocks) and may have formed by compression and migration of the Indian-Australia plate toward the NNE and delamination of the lower crust caused by the lithospheric extension in eastern China.

早白垩世上库力组酸性火山岩属陆壳重熔型火山岩，其形成可能与印度澳大利亚板块朝北偏东方向推挤运移、中国东部岩石圈拉张引起的下地壳拆沉作用有关。

Their volcanic rock characteristics are similar to that of Andean.

其火山岩特征类似于安第斯型火山岩。

Through analysis of studied results of volcanite reservoir in Xincheng area, northern part of Songliao basin, by using seismic-geologic interpretation mode of volcanite facies formed by characteristic seismic response a...

本文通过对松辽盆地北部兴城地区火山岩储层的研究成果分析，利用由地震响应特征形成的火山岩相地震地质解释模式，并结合相关的钻井、测井及区域地质资料，将该区的火山岩相划分为爆发相、溢流相和火山沉积相三种亚相；用延拓法可视化技术，精细地刻画出火山口的地貌。

The volcanic stratum has been investigated in detail and a section of the volcanic rocks has been remeasured by the authors. The ESR ages of 0.268 Ma and 0.349 Ma are obtained from the lake sandy gravel under the volcanic layer.

作者对这套火山岩地层进行了详细野外调查并重新测制了火山岩地层剖面，在该套火山岩下伏及层间湖相碎屑沉积层中获得ESR年龄0.268 Ma与0.349 Ma。

Based on geological environment, bi-model volcanic series, sedimentary formation and geochemical features of volcanic rocks, it is held that the deposits were most probably formed in the Carboniferous back arc rifted environment.

根据矿床产出地质环境、双峰式火山岩系、沈积建造以及火山岩地球化学特征，推断昆仑式火山岩型块状硫化物铜矿床最可能形成于泥盆纪－石炭纪弧后拉张构造环境。

The Xiaoxinancha copper-gold deposit occurs in the upwarped zone rimming the Mesozoic volcanic basin, being of porphyry type; the Naozhi gold deposit occurs in the lifted block within the Mesozoic volcanic basin, belonging to porphyry epithermal transitional type; the Wufeng and the Ciweigou gold deposit, which are two epithermal deposits, exist in the fault zone within the Mesozoic volcanic basin.

小西南岔金铜矿床产于中生代火山岩盆地边缘的隆起带，属于斑岩型矿床；闹枝金矿床产于中生代火山岩盆地内的断隆块，属于斑岩-浅成热液过渡型矿床；五凤和刺猬沟金矿床产于中生代火山岩盆地内断裂带，属于浅成热液型矿床。

The authors think that the magmas of the intermediate-acid volcanic rocks were derived from basaltic magmas of the lower crust and are mixed magmas produced by the increase of geothermal gradients due to diapiric injection of basaltic magmas and partial melting of intermediate-basic metamorphic igneous rocks in the lower crust,and that they resulted from a series of tectonomagmatic activities that took place when the closing of the Mongolian-Okhotsk sea trough and continent-continent collision caused crustal thickening and brought about the formation of the Hinggan-Mongolian orogenic belt in the process of oblique subduction of the Paleo-Pacific plate beneath the Siberian plate.

中文摘要：通过对大兴安岭北段晚侏罗世吉祥峰组中酸性火山岩的岩石地球化学研究，发现其中存在高Sr低Y型火山岩，即文献上所称的埃达克质岩，笔者认为中酸性火山岩的岩浆起源于下地壳玄武质岩浆，为玄武质岩浆底辟上侵引起地热梯度增加、下地壳中基性变质火成岩石部分熔融的之混合岩浆，是古太平洋板块向西伯利亚板块斜向俯冲过程中，蒙古鄂霍次克海槽封闭，陆壳碰撞使地壳加厚，形成兴蒙造山带时所引起的一系列构造岩浆活动。

Volcanic rocks shaped by a volcanic movement tend to occur vugs and fissures as spaces for hydrocarbon storage during rapid magma condensation;the volcanic debris deposits are characterized by expanding and dispersing in water,being either favorable to packing pores,and becoming good sealing caps,or to preservation of oil/ga...

火山活动形成的火山岩，在岩浆迅速冷凝过程中会产生孔洞和缝隙，成为容留油气的空间；火山活动形成的火山灰沉积，具有遇水膨胀和分散的特点，地层孔隙被其它充填后而成为良好的封存盖层并能抗御新构造运动的破坏而有利于油气田的保存；火山活动提供1020～1200℃的岩浆和300～400℃的热液流体携带的热能，为油气运移提供热动力条件，促进油气运移；火山活动在沉积盆地内形成的火山岩体与侵入岩体，为含油气盆地增加了一种非构造圈闭———火山岩岩性圈闭。

The Middle Devonian Beitashan Formation consists of a series of intermediate-basic volcanic rocks intercalated with more than 100 m thick picritic layer at the bottom, whereas the Middle Devonian Yundukala Fm. is composed of a series of shallow-sea fine-clastic rocks interbedded intermediate rocks and intermediate-basic rocks. The Late Devonian Jiangzierkuduke Fm. includes pyroclastic rocks intercalated with intermediate-basic and intermediate-acid rocks, whereas the Late Carboniferous Batamayineishan Fm. consists chiefly of basalts and basaltic andesites intercalated with tuff, siltstone and carbonaceous shale.

其中中泥盆世北塔山组为一套中基性火山岩，并且底部含有厚度超过100m的苦橄岩；中泥盆世蕴都喀拉组为一套浅海相细碎屑沉积岩夹中性、中基性火山岩；晚泥盆世江孜尔库都克组为火山碎屑岩夹中基性和中酸性火山岩组合；而晚石炭世巴塔玛依内山组以玄武岩和玄武安山岩为主，夹凝灰岩、粉砂岩和炭质页岩。

The relationships between large igneous rock province, mantle plume and petroleum show that there is a low velocity-high conductive layer of mid-crust in the basin and this layer is the main source of oil and gas. Weathered granites and volcanic rocks are the best reservoir beds for hydrocarbon accumulation and the faults are the main migration pathway. It is suggested that granite and volcanic reservoirs be the future exploration targets.

通过研究花岗岩和火山岩油气藏的形成模式，指出大火成岩省、地幔柱与油气的关系表明盆地中地壳的低速－高导层可能是油气的主要来源，而花岗岩、火山岩的风化壳是油气成藏的最佳储集层，断裂则是其最主要的运移通道，花岗岩和火山岩油气藏将是未来勘探的重要目标。

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。