裂谷

The source rocks of the former are mainly the well-developed, huge thickness of Neogene marine depression sedimentary rocks and Miocene marine sedimentary rocks; those of the latter are significantly the rift sediments of Paleogene continental facies, and large-scale source rocks of medium-deep lacustrine facies and inshore paludal facies with coal measure strata well-developed.

根据南海北部边缘新生代沉积盆地结构、构造特征可将其划分为走滑伸展型和断陷裂谷两大类型，前者以新近系巨厚海相坳陷沉积及海相中新统烃源岩发育为突出特点，后者则以古近系陆相断陷裂谷沉积和大规模中深湖相烃源岩、近海沼泽相煤系烃源岩发育为主要特征，这些烃源岩的发育展布规律、有机质丰度和生烃母质类型、成熟演化特点以及生烃潜力等均差异较大。

Modified/Improved Rift heat flow modeling to account for radiogenic heat component loss during rifting. The traditional models over-predict heat flow and maturity in such basins.

改进的裂谷盆地热模式，可考虑裂谷过程中岩石圈厚度减薄引起的放射性生热的的损失，传统的模式中预测的热流和有机成熟度过高。

Lake Victoria does not lie in the Great Rift Valley but between its main and western branches.

维多利亚湖不列于大裂谷，但是位于大裂谷主要的山脉及西部分支。

Through the systematical study of petrology, petrochemical and geochemical characteristics, the author concludes that it is an alkali syenite formed inside plate. The syenite,together with basalt, diabase dyke inside the basin forms a speci...

该正长岩为形成于板块内部的碱性正长岩，它与盆地内部的二叠纪玄武岩、辉绿岩岩墙一起构成了一套发育于裂谷性盆地的岩浆岩组合，说明二叠纪时塔里木盆地处于裂谷构造环境。

Three basin prototype s are generated in the southeast of Junggar Basin: filling basin in the post-rift sequenceP_2-T_(2-3,foredeep basin in the post-rift sequenceT~~3__3-J_(1-2 and intracontinental foreland basin(J_3-E).

准噶尔盆地东南部发育了3套盆地原型，即P2—T2-3的后裂谷期充填盆地、T33—J1-2的裂谷后前渊盆地、J3—E的陆内前陆盆地的并列叠加作用；发育了3套主力生油岩系，即上二叠统芦草沟组、红雁池组和上三叠统黄山街组、郝家沟组及下、中侏罗统八道湾组、三工河组、西山窑组，并赋存于阜康凹陷、吉木萨尔凹陷、五彩湾凹陷、黄草湖凹陷之中，形成了多个供油中心。

The metal elements of the volcanic-hosted massive sulfide deposit have two sources, the copper and zinc are derived from rhyolitic magmas whereas the lead are probably related to old sediments overlying the rhyolites.(4) It is suggested here that the volcanic rocks hosting massive sulfide deposit in the north Qilian orogen, which are previously considered as a bimodal suite of Neo-proterozoic to middle Cambrian age in a continental rift, are virtually related to subduction magmatism in Ordovician age, and there might have no continental rift magmatism of Neo-proterozoic to middle Cambrian in the north Qilian.

Th/Ta比高(5.0～11.7)，εNd为较大的负值(-2.6～-8.4)，流纹岩的形成可能是两个端元组分混合的过程、或是上地壳混染的结果，形成在活动陆缘环境；(3)北祁连块状硫化物矿床成矿金属物质具有两种来源，Cu、Zn等来源于流纹岩，而Pb的来源可能与古老沉积物有关；(4)本文认为，前人厘定的北祁连新元古代-中寒武纪赋存块状硫化物矿床的大陆裂谷双峰式火山岩应是与俯冲作用有关的奥陶纪火山岩，说明北祁连可能不存在新元古代-中寒武纪的大陆裂谷活动。

Since the plate tectonic theory was introduced into China in 1970's, aulacogen has been considered in the area of Helan Mountain in Ordos Basin by some geologists. It is believed that Helan Mountain, Qinling and northern Qilian area were at the stage of rifting development from Mid-Neoproterozoic to Early-Mid Cambrian, and that Qinling, northern Qilian, Helan Mountain formed a trifurcate rift valley system.

自19世纪70年代板块构造理论引入中国后，一些学者把拗拉槽一词赋予了鄂尔多斯盆地西缘贺兰山地区，并认为贺兰山、秦岭、北祁连中新元古代至早中寒武世为裂谷发育阶段，秦岭、北祁连、贺兰山构成了三叉裂谷系。

The recognition of episodic nature of rifting is considered as a major progress in research of rifted basins in recent years.

近年来裂谷盆地研究的一个重要进展就是认识到了裂谷过程的多幕性。

Analogue modeling of rifting provides direct and effective ways for the study of the relation between geometry and dynamics of continental rift systems.

裂谷作用的物理模拟是研究大陆裂谷系统的几何结构与动力学机制之间关系的一种直观有效的手段。

Analogue modeling of rifting provides direct and effective ways for the study of the relation between geometry and dynamics of continental rift systems.

摘 要：裂谷作用的物理模拟是研究大陆裂谷系统的几何结构与动力学机制之间关系的一种直观有效的手段。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。