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玄武岩类

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This paper studied the lithologic characteristics, porosity and its evaluation, forming mechanisms of six kinds of volcanic rocks, and analyzed the evaluation history and the key factors about the main volcanic reservoirs, including andesite, basalt and tuff, etc.

对研究区火山岩岩性特征、储集空间类型、孔隙演化特征及其主要影响因素进行了深入分析,研究了区内6种火山岩的岩性特征及4个亚类储集空间的发育特征,深入分析了区内主要的火山岩储层如安山岩、玄武岩、火山角砾岩和凝灰岩等的孔隙演化过程及其控制因素。

However, the Nb/Ta ratios lower than chondrite value (~17) in eclogites are inconsistent with previously proposed Nb/Ta high in subducted oceanic crust to complement the mass balance of Nb and Ta in the evolution of continental crust.

柴北缘沙柳河、鱼卡河、锡铁山和胜利口的榴辉岩类样品的地球化学分析显示它们的原岩的主体是与洋壳有关的火山岩,其中包括岛弧拉斑玄武岩、洋岛火。。。

When silica content reaches 45-53 %, basic rocks become the name of this type of igneous rock in which the gabbro is the typical intrusive rock which are composed of pyroxene and calcium plagioclase, whereas basalt is the equivalent extrusive rock.

当岩石中SiO2含量在45~53%之间时,称这类火成岩为基性岩。辉长岩就是这类岩石侵入岩的典型代表,其中矿物成分为辉石,钙长石,而基性的喷出岩则称之为玄武岩。

The contents of Ni, Au, Mo, W of the deep-seated xenoliths and their host basalts from eastern China are inhomogeneous. The contents of Ni, Au are highest in the mantle-derived xenoliths the contents of Mo, W are highest in the basalts and the mafic granulite, and the leptite and the granitoids, respectively.

地球深部包体中镍、金、钼、钨等成矿元素的含量是不均一的,镍和金在地幔岩包体中含量最高,铝在玄武岩及镁铁质麻粒岩包体中最高,而钨在长英质麻粒岩和花岗岩类包体中含量最高。

They are clay, mud shale, gravel, oil shale, mudstone, schist, basalt, limestone, gritstone, dolomite, breccia, granite, and quartzite. We give the feature curve and distribution feature equation of these rocked landslide.

本论文分别对不同滑体岩性,包括从软到硬的粘土、泥页岩、砾类土、油页岩、泥岩、片岩、玄武岩、灰岩、砂岩、白云岩、角砾岩、花岗岩、石英岩十三种具有代表性的岩土体的滑坡推力和剩余抗滑力进行了模拟分析,给出了它们的滑坡推力和剩余抗滑力分布特征曲线,分布特征方程。

According to characteristics of igneous petrology and spatial types of reservoir, igneous reservoirs of Jiyang depression are divided into four categories: fractured irruptive rock reservoir, fracture-pore thermocontact metamorphic rock and irruptive rock compound reservoir, pore volcanic debris cone reservoir and fracture-pore overfall basaltic rock reservoir.

根据火成岩岩石学特征及主要储集空间类型,将济阳坳陷火成岩油藏分为四类:裂缝型侵入岩油藏,裂缝—孔隙型热接触变质岩、侵入岩复合油藏,孔隙型火山碎屑锥油藏,裂缝—孔隙型溢流玄武岩油藏。

The first type is different kinds of rocks including sedimentary rock, metamorphic rock and volcanic rock among which black mudstone, black shale, clay, slate, phyllite, granite, basalt, andesite and volcanic ash are the best except some chemically depositional rock such as salt rock, gypsum, limestone.

第一类是自然界各种不同类型的岩石,包括沉积岩、变质岩和火山岩,其中以黑色泥岩、黑色页岩、粘土、板岩、千枚岩、花岗岩、玄武岩、安山岩及火山灰为最佳,但不包括某些化学沉积岩,如盐岩、石膏、石灰岩。

Two REE distributed pattern, LREE-depleted and flat, which display a specific character of typical mid-ocean ridge tholeiite, indicate that primary magma may be derived from near primary or a typical large ion lithophile element-depleted mantle.

岩石稀土元素配分模式可分为LREE平坦型和LREE亏损型两类,指示了其原始岩浆起源于近原始或典型的大离子元素亏损型的地幔,为典型的大洋中脊拉斑玄武岩的特征。

We examined the origin and source of both high-Ti and low-Ti basalts of most large igneous provinces on Earth and found that they are generated from distinct mantle sources, rather than time-dependent.

根据对地球上两类玄武岩的源区和成因研究,发现它们应该是来自不同的地幔源区,而与其形成的时间没有关系。

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