查询词典 rocks

It is inferred that the Cretaceous rhyolitic rocks developed widely in Zhejiang Province probably originated by partial melting of the basement metamorphic rocks. Continuous underplating of basalt resulted in significant increase of introduced mantle-derived materials with time.

推测浙江省广泛发育的白垩纪流纹质火山岩可能是基底变质岩部分熔融形成，由于持续的玄武岩底侵作用，造成幔源物质的加入量显著地随时间增加。

Mesozoic volcanic rocks that exhibit thin planar layering known as flow banding. These rhyolitic rocks contain

弥勒山的地质：昂坪宝莲寺上弥勒山的地质主要是中生代火山岩，一般呈现称为流状条带的薄层构造。

Investigation results demonstrate that the age of intermediate to alkaline potash rich volcanic rocks of the first cycle of the Qingshan Formation is 109.9±0.6 Ma; and the age of the acidic rhyolitic volcanic rocks of the second cycle of the Qingshan Formation ...

结果表明，青山组第一旋回中偏碱性富钾火山岩的形成年龄为10 9.9± 0 。6Ma ，第二旋回酸性流纹质火山岩形成年龄为 10 8.2± 0 。6Ma ，据此确定胶莱盆地青山组火山岩应为早白垩世岩浆活动的产物。

Rhyolitic volcanic rocks are generally characterized by rich alkali, silicon, aluminum,and poor calcium, magnesium. They have relatively high Rb,Th and rather low Ba,Sr,Ti,P,and exhibit obviouslv negative europium anomaly (δEu=0.16~0.44).The εNd values of the rhyolitic volcanic rocks range from -5.93 to -2022.Basalts and rhyolites in different cycles show clear geochemical variance.

流纹质岩石总体具富碱、富硅、富铝，贫钙、贫镁特征，其Rb、Th等元素的含量较高，而Ba、Sr、Ti、P等元素含量则明显偏低，并具显著的铕负异常（εEu=0.16'0.44），岩石的εNd值变化于-5.93~~-2.22.I、II旋回玄武岩和流纹岩在地球化学特征上均具明显变异。

The control of sedimentary and tectonic environment for hydrocarbon source rocks externalized in that sedimentary distributing, organic abundance, organic type, organic development of this rocks and the oil system of Lower Cambrian samely relate to the breakup background.

沉积构造环境对烃源岩的控制表现在，无论其沉积分布、有机质丰度、有机质类型、有机质演化程度，还是下寒武统含油气系统都与该时期裂离背景下的沉积构造环境有关。

In a view of the theory of the traditional oil and gas formation it is considered that the oil and gas resources buried in sedimentary basins are generated by OM in source rocks during thermal evolution and marine, lacustrine sapropel and humic-sapropel OM is the mater of the formation of considerable oil and gas but coal-measure strata is relatively bad source rocks, being considered that they can not generate significant amounts of oil and gas.

传统的石油天然气成因理论认为蕴藏于沉积盆地的油气资源是由烃源岩中的有机母质在热演化过程中形成的，而且是海相或者湖相腐泥型和腐泥－腐殖混合型的有机质有利于形成大量的石油和天然气，而煤系地层相对是较差的烃源，认为这种烃源岩不能形成大量的油气。

Oligocene-Miocene volcanic rocks are shoshonite,late Miocene-Pleistocene volcanic rocks are High-k calc-alkaline.

渐新世-中新世火山岩以钾玄岩系列为主，部分为高钾碱性系列，火山活动强烈出露面积大而广泛。

Orebodies occur in a fault near the axial region in the southern limb of the Jinjinghe-Hujiamiao inverted secondary anticline in the southern limb of the Hongyansi-Heishan composite syncline. Host rocks are dolomitic rocks in the middle and upper parts of the Devonian Qingshiya Formation. Their spatial distribution is obviously controlled by an interlayer fracture-fissure zone near the axial region in the steeply dipping southern limb of an anticline. Ores are dominantly of nodular and stockwork types and the feature of epigenetic mineralization is very pronounced.

矿体产于红岩寺—黑山复式向斜南翼金井河—胡家沟次级背斜南翼近轴部断裂中，赋矿岩石为泥盆系青石垭组中上部白云质岩，其空间展布明显受背斜陡倾南翼近轴部的层间断裂-裂隙带构造控制，矿石主要有团块状和网脉状，其后生成矿现象非常明显。

On the basis of comprehensive discipline research, the rocks subfacies and microfacies of hydrothermal rocks facies have been initially studied and the their characteristic have been come to conclusions frist time.

在多学科综合研究基础上，首次系统提出研究并总结了热水沉积岩相的亚相及微相特征，亚相包括有：钠长岩-似碧玉岩亚相、硅质白云岩→硅质岩亚相、碱性钠长石质-碳酸质岩亚相、铁镁碳酸盐岩亚相、重晶石岩亚相、黑云母方柱石岩/黑云母岩亚相及铁绿泥石岩亚相。

Sterane and terpane biomarkers of Lower Paleozoic source rocks in the Tarim basinindicated that there is closer relationship between crude oil and the Cambrian source rocksrather than the Middle-Lower Ordovician source rock, and less relation with UpperOrdovician source rocks.

4烃源岩甾萜烷生物标志化合物特点表明，寒武系烃源岩与原油最为接近，次为中、下奥陶统，上奥陶统最疏远。

The Master of Science degree program in Economics features a curriculum that is flexibl...

在经济学理学硕士学位的课程计划的特点是灵活而全面的方法，在理论和应用课程培训工作。

This module is used for constructing and visualizing 3D models.

该模块是用于建设和可视化的三维模型。