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In the term of sedimentary features of Neopaleozoic in south of North China Basin, lateral variation of sedimentary facies was studied selectively in Benxi-Taiyuan Formation, Shanxi Formation, Lower Shihezi Formation, Upper Shihezi Formation and Shiqianfeng Formation. Lithofacies paleographic features and the sedimentary evolutionary process of Late Paleozoic in south of North China Basin were worked also.

根据华北盆地南部上生界的沉积特点,按本溪组—太原组、山西组、下石盒子组、上石盒子组和石千峰组5个层组分别开展了沉积相的横向变化对比研究,并以此为基础探讨了华北盆地南部晚生代的岩相地理特征及其沉积演化过程。

Based on the date of outcrop, log and lithology, sequence stratigraphic division and correlation were made on Neopaleozoic in south of North China Basin, and high-precision geologic correlation framework was built up in the basin.2. In the term of sedimentary features of Neopaleozoic in south of North China Basin, lateral variation of sedimentary facies was studied selectively in Benxi-Taiyuan Formation, Shanxi Formation, Lower Shihezi Formation, Upper Shihezi Formation and Shiqianfeng Formation. Lithofacies paleographic features and the sedimentary evolutionary process of Late Paleozoic in south of North China Basin were worked also.3. On the basis of sand-bodies Isopach figure drawing, the distribution of major reservoir sand-bodies of Neopaleozoic in south of North China Basin was studied. Basing on the distribution of sand-bodies in sequence stratigraphic framework, combining the development and distribution features of barrier and underwater distributary channel, there is a disquisition on the distribution regularity of pay reservoir sand-bodies of Neopaleozoic in this area.

以露头、测井和岩性资料为基础,对华北盆地南部上生界进行了层序地层的划分与对比工作,建立了盆地范围内的高精度地层对比格架。2、根据华北盆地南部上生界的沉积特点,按本溪组—太原组、山西组、下石盒子组、上石盒子组和石千峰组5个层组分别开展了沉积相的横向变化对比研究,并以此为基础探讨了华北盆地南部晚生代的岩相地理特征及其沉积演化过程。3、以编制砂体等厚图的方式研究了华北盆地南部上生界主要储集砂体的平面展布规律,并以层序地层格架下的砂体展布研究为基础,从沉积体系控制下的砂体分布特点出发,结合障壁岛与水下分流河道的发育与分布特点,系统深入地开展了区内上生界有利储集砂体的分布规律研究。

Kalamaili suture zone is an important plate boundary in north Xinjiang, and there are plenty of Neopaleozoic volcanic rocks around itThese volcanic rocks are enriched in LILEs and relatively depleted in HFSEs, and they are also characterized by high Nb, Zr, TiO2 contents and Zr/Y, Nb/Y ratios, and depleted SrNd isotopesThe characteristics of these volcanic rocks suggest that they were produced in postcollisional periodThe postcollisional volcanic rocks around Kalamaili suture zone become younger from west to east, which indicates that this suture zone entered postcollisional period gradually from west to east, and reflects that the Kalamaili Ocean had been closed gradually from west to eastAs to the Kalamaili suture zone in postcollisional period, the lithosphere extended and thinned, and the asthenosphere materials upwelled and melted partially, and intensive mantle convection occurred, leading to a plenty of mantlederived magmas underplating the suture zoneThe lithospheric mantle metasomatized by fluid in subduction period melted partially under decompression and high temperature, the resulting melts contaminated the underplating asthenospheric materials, and the erupted lavas became the Neopaleozoic postcollisional volcanic rocks

卡拉麦里缝合带是北疆的一条重要界线,沿该带广泛发育晚生代火山岩。这些火山岩具有LILE相对富集、HFSE相对亏损的特征,且具有较高的Nb、Zr、TiO2含量和Zr/Y、Nb/Y比值,SrNd同位素主要表现出亏损的特征。综合分析表明,这些火山岩形成于后碰撞期。对卡拉麦里缝合带而言,从西向东后碰撞火山岩的时代逐渐变新,表明该缝合带从西向东逐渐演化进入后碰撞期,这从侧面反映了卡拉麦里洋盆是从西向东逐渐关闭的。对卡拉麦里缝合带而言,在后碰撞期,岩石圈伸展减薄,软流圈地幔物质上涌并发生部分熔融,加上地幔对流作用强烈,使得缝合带下产生了大规模的幔源岩浆底垫;先前在洋壳消减期被流体交代提取过的岩石圈地幔也在低压高温下发生部分熔融,形成的熔体混染了底垫的软流圈物质并喷发,形成了晚生代的后碰撞期火山岩。

The basin experienced three basin-forming cycles of Neopaleozoic, Mesozoic and Cenozoic Eras. Mesozoic fault and depression compounding basin composed the northern margin Jurassic petroleum system and the Cenozoic large-scale strike-slip and compressional basins composed the Tertiary petroleum system of the western Qaidam basin and Quaternary petroleum system of Sanhu. The intense tectogenesis of Yanshan and Xishan made the Jurassic petroleum system of the northern Qaidam more complex. The monocycle paleoclimate evolution in Cenozoic Era and multi-tectonic movement made the lake-basin evolution, hydrocarbon source-rock, reservoir development, accumulation condition and petroleum distribution are more exceptive in character and complex in feature.

该盆地经历了晚生代、中生代和新生代3个成盆旋回,中生代断坳复合盆地形成了柴达木盆地北缘侏罗系油气系统,新生代大型走滑挤压盆地形成了柴达木盆地西部第三系油气系统和三湖第四系天然气系统,燕山和喜山2期强烈构造运动使柴北缘侏罗系油气系统高度复杂化,新生代单旋回气候演化与多期构造运动使湖盆演化、烃源岩和沉积储层发育特征、成藏条件与油气分布规律变得十分特殊和复杂。

The water depth had increased since Late Te r tiary and reached to high stand in Early and Middle Pliocene (outer neritic to b athyal environment), and then decreased.

研究认为崖19-1-1井晚第三纪以来水深变化的总趋势为逐渐增大,至上新世早中期出现外浅海至半深海环境,为水深最大时期,随后水深则逐渐减小。

The Seljuk period marked the influx of Oghuz nomads into the region and, thus, the beginning of the turkification of Azerbaijan as the West Oghuz Turkic language supplanted earlier Caucasian and Iranian ones.

塞尔柱王朝时期标志着乌斯游牧部落向这一地区的涌入,并且随着西乌斯土耳其语取代了早期高加索语和伊朗语,也就标志着阿塞拜疆突厥化的开始。

So if the oldland margin is well studied, it is possible to get a key for knowing the geological evolutional history and rock-forming and metallogenic processes in South China.

诸多地质学家认为华南地区地质演化特点是从扬子陆边缘向外逐渐增殖,若对陆边缘地区进行较好的研究必将得到认识华南地质史及成岩成矿的钥匙。

An oligotrophic bacteria was isolated from oligotrophic environmentin Xinjiang.

从新疆的寡营养环境——尔班通特沙漠中分离到一株寡营养细菌 Azotobacter sp。

The results show that the Luzhou Palaeohigh is the favorable region to develop the intraplatfonn oolitic bank during the slow equivalent regression process, moreover, the bank formed was characterized by a large thickness and wide distribution area.

结果表明,在缓慢等效的海退过程中,处于高能沉积界面附近的水下高地有利于台内鲕滩的形成,继承性的泸州隆起核部是区内有利的滩体发育区,形成的台内滩体具有一定的厚度规模和较大的分布面积。

The iron and aluminum weathering crust formed in late Yanguan stage provided the material foundation for the generation of oolitic hematite.

汤靶沟阶晚期存在一次规模较大的暴露及岩溶事件,其间风化剥蚀形成的铁铝质风化壳为鲕状赤铁矿提供了物质基础。

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