基性熔岩

新疆东准噶尔卡拉麦里蛇绿混杂岩的岩石组合为变质橄榄岩、辉长岩、辉绿岩和基性熔岩等。

The Karamaili ophiolite complex in East Junggar of Xinjiang province was composed of metamorphic peridotite , gabbro , diabase and basic lava .

结果认为，白垩纪火山岩以中酸性火山熔岩和火山碎屑岩为主，局部发育基性熔岩；

The study shows that Cretaceous volcanics mainly consist of medium acidic volcanic lava and volcanoclastic rocks , with locally developed basic lava ;

对于那些具有消减带信号的基性熔岩，可以根据Zr含量和Zr/Y比值，或利用Zr/Y-Zr图解，判断它们是否真正是岛弧或活动大陆边缘玄武岩。

For the basic lavas with subduction-type signatures , we can judge whether they are really island-arc or active continental margin basalts by studying Zr contents and Zr / Y ratios or Zr / Y-Zr diagram .

本文通过对蛇绿岩基性熔岩的主量、微量和同位素地球化学研究，结果表明库勒湖蛇绿岩具N-MORB特征，推测其形成于小洋盆环境。

The major , trace element and isotope geochemical characteristics of the basic lavas of the Kule Lake ophiolite indicate that the basic lavas have a N-MORB affinity , possibly suggesting a small ocean basin environment for them .

赣东北地区早前寒武纪超基性熔岩&层状侵入岩的初步研究

Preliminary study on Early Precambrian ultramafic lava & ayered intrusions in northeastern Jiangxi

五台山区滹沱群变质基性熔岩中锆石U&Pb年龄

The zircon U-Pb age of metamorphosed basic volcanic lavas from the Hutuo group in the Wutai Mountain area , Shanxi Province

熔岩的岩相学和地球化学特点反映了拉伸方式的改变，北部是典型的弧后盆地基性熔岩，向南则逐渐向岛弧熔岩过渡。

Petrographic and geochemical characteristics of lavas reflect the change in style of ex - tension , with typical back-arc basin basic lavas in the north passing southward to arc lavas .

而基性熔岩流的张裂体系具有独特性，是地下水（或矿泉水）和油气的重要储体和运移通道。

However , the fissure systems on the basaltic lava flows are very outstanding , which are the important storage media and migration pathway of groundwater ( or mineral water ), oil and gas .

传统认为蛇绿岩套由超基性岩、含枕状构造的基性熔岩和硅质岩组成，是大洋岩石圈的碎片，具有完整的5个或4个层序。

According to traditional view , ophiolitic suite , the fragments of ocean litho-sphere , is composed of ultrabasic rocks , basic laves with pillow structure and siliceous rocks , and included 5 or 4 complete sequences .

中酸性火山岩以钙碱性系列为主，形成于挤压造山环境，储集性能较好，而白垩纪基性熔岩以碱性系列为主，形成于裂谷环境，储集性能较差。

Medium acidic volcanics mainly consists of calc-alkalic series , was formed in compressive orogenic environment , and has good reservoir property , while Cretaceous basis lava mainly consists of alkalic series , was formed in rift environment , and has poor reservoir property .

基性熔岩稀土元素分布模式既有洋脊玄武岩的平坦曲线，又有轻稀土富集型的夏威夷等洋岛玄武岩的特征，反映该蛇绿岩带混杂着洋壳残骸和洋岛碎块。

The REE partition pattern of basic lava not only consists of flat curve of mid oceanic ridges basalt but also includes the characteristic of Hawaii oceanic island basalt with LREE abundant type , which reflects this ophiolitic belt mixed ocean crust wrecked with oceanic island fragment .

辽宁北票地区义县组是一套中生代陆相火山沉积岩系，主要由中-基性火山熔岩、火山碎屑岩及陆相沉积岩构成。

The Yixian Formation in the Beipiao area , Liaoning Province , consists of a series of volcanic-sedimentary rocks , including basic and intermediate-basic volcanic lava , pyroclasts and terrestrial sedimentary rocks .