火山岩

Most foreign scholars believed that T_2 cutoff value of sandstone cores was about 33 ms and domestic scholars generally believed that T_2 cutoff value of domestic sedimentary reservoirs cores was less than 33 ms. In majority study abroad most T_2 cutoff value of carbonatite cores distributed between 90 ms and 100ms, and never saw author relevant reports yet about T_2 cutoff value of vulcanite reservoir cores.

国外研究中砂岩T_2截止值大多在33ms左右而多数碳酸岩岩心集中在90～100ms之间，国内学者普遍以为国内沉积岩储层岩心的T_2截止值要小于33ms，还未见到火山岩油气躲岩心T_2截止值的相关报道。

In this ***, T_2 cutoff value of glutenite cores mostly distributed between 10 and 30 ms, carbonatite cores were about 100ms. T_2 cutoff values of vulcanite cores changed great with lithology, and average T_2 cutoff value of rhyolite cores was 87.91 ms, tuff was 52.02 ms, and volcanic breccia was 36.28 ms.

在本文所测岩心中，砂砾岩岩心T_2截止值大多集中在几ms～30ms之间，碳酸岩岩心T_2截止值均在100ms左右，火山岩岩心T_2截止值随岩心岩性变化较大，大庆油田岩心中流纹岩均匀值为87.91ms，凝灰岩均匀值为52.02ms，火山角砾岩均匀值为36.28ms。

The processing results showed that the ability in increasing S/N ratio and enhancing the continuity of weak events as well as confirming the deep configuration of volcanic reservoir is better than others.

这些对于深层火山岩储层形态的确定以及储层预测和评价等都是具有非常重要的意义。

A monstrous pyramidal ziggurat, the building appeared to be made of cast iron, not volcanic rock.

这座巨大的金字塔形神殿看起来象是用铸铁构筑，而不是用火山岩。

According to comprehensive research of lithogengesis and lithogeochemisty, all these volcanic rocks have higher alkalinity, alkalis with sub-alkalis series, normal type with akali type have coexisted, and SiO2 have oversaturated rock with under saturate.

通过岩石学，岩石地球化学分析，该火山岩整体碱度较高，碱性和亚碱性系列共存，正常类型和钾质类型共存，SiO2过饱和或低度不饱和。K2O平均含量3.4％，K2O／Na2O值多大于0.6，中基性岩Al2O3含量多大于16％。

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。

The volcanics are most commonly andesitic in composition.

火山岩的组成最通常是安山岩。

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。

Using thin section X-ray diffraction techniques, his paper identified arfvedsonite in volcanic rocks from Songliao Basin, and thus confirmed that the volcanic rocks are composed of pantellerite.

利用岩石薄片X衍射技术，在松辽盆地深层富碱酸性火山岩中识别出特征的碱性暗色矿物－钠铁闪石，从而确定其为碱流岩。

The petrophysical properties of volcanic rock reservoirs in Junggar Basin are generally characterized by the following: the acidic lava and auto brecciated lava are the best, especially the petrophysical properties of auto brecciated lava and andesites after the tectonic movement and denudation process in the later stages are superior to those of basalts.

准噶尔盆地火山岩储层物性一般特点是：酸性熔岩、火山角砾岩最好，特别是经后期构造运动和溶蚀作用改造后的火山角砾岩；安山岩的物性总体优于玄武岩。

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。