中生代的
- 与 中生代的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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As a whole, the rocks from diorite enclaves, through quartz-diorite, granodiorite to monzonitic granite, have the feature of REE slightly increasing, Eu from weakly positive transits to negative anomaly, but the diorite enclaves which has Eu negative anomaly. Besides, the Ba, Nb, Ta, P and Ti all show negative anomaly, and have positive anomalies of K and Th, simultaneously, there exists Sr positive anomaly in some rocks. Along with the increasing of the SiO〓, the P and Ti have negative anomaly, Th and K positive anomaly are obvious.
张广才岭中生代不同时期的花岗岩具有相同的Sr、Nd同位素特征,均具有高ε〓值、低,值的突出特点,ε〓值集中在-2~+4之间,〓值主要集中在0.703~0.706之间。
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The front of south Qilian Mt. can be subdivided into two units:outcrop unit and basined unit,and strong tectonic activities,which controlled depositing process in Cenozoic and distribution of present Mesozoic systems,have occurred in Late Mesozoic in this area.
南祁连山前区可以分为露头和盆地区两个不同的大地构造单元,本区晚中生代构造活动强烈,控制了新生代的沉积过程和现今中生界残余层序的分布。
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Chronologic researches on the Mesozoic (230-65Ma) volcanic rocks in West Liaoning and adjacent areas indicate that the volcanic activities were periodic with an average period of 20-30Ma, and that the peak ages of the volcanic activities were determined at 230Ma, 190Ma, 160Ma, 130-120 Ma, 110-100 Ma, and 80Ma, respectively.
对辽西及其邻区中生代(230~65Ma)火山岩年代学的研究发现:火山活动具有平均间隔20~30Ma的周期性,火山岩活动的峰期为230Ma、190Ma、160Ma、130~120Ma、110~100Ma、80Ma。
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We divide the evolution of becoming rocks into four periods: early region's metamorphic process and mixed lithifaction,sedimentation and becoming rocks process in middle and late Proterozonic Era and in the Paleozonic Era,trasformation process of burial hill layers in earth shell'uplift period in the Mesozonic Era, and transformation process to burial hill in the Cenozonic Era.
将储层的成岩演化划分为四个阶段:即早期区域变质作用和混合岩化作用、中晚元古代和古生代沉积成岩作用、中生代地壳抬升阶段潜山地层的改造作用和新生代断裂对潜山的改造作用。
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The discovery and research history of Henan dinosaurs, and the results of tectonic settings, stratigraphic distribution and paleogeographic environment etc of Mesozoic basin in recent 30 years were thoroughly reviewed.
本次全面回顾了省内外学者近三十年来对河南省恐龙化石的发现及研究历史,赋存化石的中生代盆地地质构造背景、地层分布、古地理环境等的研究成果。
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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。
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This paper identified two generations of superimposed folds that widely develop in Indosinian to early Yanshanian tectonic layer (DJ12) in South China, and it is found that the earlier generation of folds is well zonated in WE and the later one is distributed in NNE.
通过分析华南印支-早燕山构造层(D-J12)广泛发育的褶皱构造,识别了早中生代两个世代褶皱构造的横跨叠加型式,发现早期近东西向褶皱构造具有南北成带、晚期NNE向褶皱构造具有东西分区的区域展布特征。
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Signal intensity and system blank of five argon isotopes obtained indicate that the system blank level adopted by the authors is low enough to get a reasonable isochron age for single mineral grains frown Mesozoic or older samples.
获得的5个氩同位素空白本底水平表明,本系统已经完全具备对中生代或更老的地质样品进行单颗粒全熔法等时线定年的能力。
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It is suggested that the area with low denudating degree occurring after postminal stage should be favorable, such as, the area at and close to the edge of Meso-Cenozoic red basins.
有利的找矿地区应为成矿期后剥蚀程度较低的地区,如现存的中生代红盆边缘及邻近地区。
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Many crustal zircons have the age (up to 2770Ma) that is much earlier than the formation of ophiolite considered by previous researchers, indicated the abundant subduction crust components occur in the zircons separated, which was preserved in the mantle, and outcropped with the mantle cycle process.
纯橄岩样品四个测点得到加权平均值为130.0±2.8Ma,属早白垩世,代表了纯橄岩的结晶年龄;研究中发现许多地壳成因的古老锆石(最老可达太古代2770Ma),远远早于目前主流观点中蛇绿岩的形成时间中生代晚期,综合考虑认为所选锆石有大量俯冲地壳成分,在地幔中保存,后随地幔循环运移出露地表。
- 推荐网络例句
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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.
Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。
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I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.
我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。
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The shamrock is the symbol of Ireland and of St.
三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。