火山岩

The Yiyang paleovolcanic suite in Hunan is recognized at Shizuitang and Dadukou, Yiyang City, Hunan Province, covering an area of about 1km^2 and 16km^2 respectively. The volcanic suite consists predominantly of komatiites and tholeiites.

湖南益阳古火山岩分布于益阳市石咀塘和大渡口两地，出露面积分别约为1km^2和16km^2，主要由科马提岩类和拉斑玄武岩类组成。

Among other things, paleovolcanic rocks at Shizuitang may be subdivided into olivine phenocryst-bearing basaltic komatiite and clinopyroxene phenocryst-bearing basaltic komatiite.

其中石咀塘古火山岩可进一步分为含橄榄石斑晶玄武质科马提岩和含单斜辉石斑晶玄武质科马提岩2种类型。

As pantellerite can be used as important evidence for the existence of crater, it has an important significance in improving the efficiency of gas exploration and development in volcanic rock areas.

碱流岩可以作为确定火山口存在的重要标志之一，它的确定对提高深层火山岩天然气勘探开发的效率具有重要的指示意义。

Silicalites, predominated by pelitic silicalite, occur in collisional zones and back-arc basins. In the collisional zones, they occur as rock sheet as an important part ofophiolitic mé lange, belonging to ophiolitic mélange type silicalite. In the back-arc or interarc basin, they occur as pelitic silicalite intercalation varying in thickness, characteristic of "silica merl",and belonging to abyssal back-arc basin type or carbonate type silicalite. In the magmatic arc, they occur as intercalation related to volcanic hydrotherm or volcalic exhalation, belonging to volcanic arc type silicalite.

在硅质岩方面：冈底斯构造带侏罗系硅质岩主要属泥质硅质岩，在各个碰撞结合带和弧后盆地中均有产出，主要的产出状态有：①在碰撞结合带中呈岩块产出，构成蛇绿混杂岩的重要组成部分，属蛇绿混杂岩型硅质岩；②在弧后或弧间盆地中呈厚度不等的泥质硅质岩夹层产出，常具&硅灰泥&特征，属弧后深水盆地型硅质岩；③呈夹层状产于弧火山岩系中，属火山热液或火山喷气型硅质岩。

The peridotitic komatiite s in Jifen g area of Daxinganling are with fine microspinifex texture.

大兴安岭吉峰地区的橄榄质科马提岩具有良好的显微鬣刺结构，在橄榄石和辉石晶体间隙中充填有基质物质，说明其为火山岩。

The volcanic rocks of Early Cretaceous Yingcheng Formation contain abundant perlitic rocks and they are important petroliferous layers in Songliao basin.

松辽盆地早白垩世营城组火山岩系含有丰富的珍珠岩，为松辽盆地重要的油气勘探目的层位。

This paper has mainly dealt, with the structural setting of volcanism, the petrologic and geochemical characteristics of volcanic rocks and its related mineralization along the coast of southeastern China and its vicinity.

本文主要论述中国沿海及其邻侧火山作用的构造背景、火山岩的岩石学和地球化学特征，以及其有关的成矿作用。

The authors describe in details about its features such as topography,petrologic features, deposition system ,palaeo-flow direction etc.

在野外工作的基础上全面叙述了青藏高原东部囊谦盆地的构造环境，地貌特征，地层的岩相、沉积体系、古流向等特征及盆地火山岩出露状况。

Fluorites formed in uranium mineralization period in the Zoujiashan and Shazhou uranium deposits have ε〓 values from -6.7 to -8.3 and I〓 values from 0.7145 to 0.7204, similar to their host rocks (porphyroblastic lava and sub-granodioritic porphyry) which have ε〓 values from -6.2 to -9.4 and I〓 values from 0.7121～0.7192. On diagram of ε〓- t, the fluorites and host rocks plot in similar area within the evolution field of the basement rocks at Xiangshan. The lead isotopic compositions of pyrites formed in uranium mineralization period plot as a line on diagram of 〓Pb/〓Pb vs.〓Pb/〓Pb. The host rocks plot at the lower value end. Calculation based on the slope of the line and the mineralzation age yields age of 144Ma for the geological body which provided uranium for the mineralization.

邹家山和沙洲铀矿床成矿期萤石的ε〓值(-6.7～-8.3)和I〓值(0.7145～0.7204)与赋矿围岩(碎斑熔岩及次花岗闪长斑岩)的ε〓值(-6.2～-9.4)和I〓值(0.7121～0.7192)相似，在ε〓-t图上，成矿期萤石数据点的投影范围与赋矿围岩的基本吻合，且均落在相山元古宙基底演化域范围内；成矿期黄铁矿的铅同位素组成在〓Pb/〓Pb-〓Pb/〓Pb关系图上呈线性分布，而火山岩的铅同位素组成位于此相关线的低值一端；利用异常铅线的斜率及成矿年龄计算出富铀地质体的形成年龄为144Ma，这与赋矿围岩的成岩年龄(135～140Ma)非常接近。

There are a lot of Cenozoic potassic and ultrapotassic lavas in the northern Qinghai-Tibet Plateau, their existing is an enigma.

青藏高原北部发育的大量新生代钾质、高钾质火山岩体的成因一直是个谜。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新