古生层

Sequence stratigraphy stemed from the marine strata research, and there are abundant Palaeozoic marine facies deposits in the south of China.

层序地层学首先是在海相地层研究过程中得以发展和应用，而在中国南方古生代海相沉积十分发育。

This new method will provide important basis for the research of the sea facies Mesozoic and Palaeozoic structure of Jiangsu lower Yangtse area and supervise the oil and gas exploration.

因此，在有一定钻井资料的条件下，通过采用大地电磁、地震资料开展有约束的联合反演，可以比较可靠地识别确定该目的层，为该区的海相中、古生界构造研究提供重要依据，以指导该区的油气勘探。

Carbon dioxide layers have been encountered in the Ordovician weathering crust of Lower Paleozoic and in Es13 of Paleogene.

东濮凹陷在下古生界奥陶系风化壳与下第三系Es13地层发现了高含CO2气层。

Formed hundreds of millions of years ago during the Palaeozoic era, it is believed that the pegmatite rocks found at the location of Alexandrite's discovery in the Urals in Russia and at Narsipattnanm are the same.

她形成于几百万年前的古生代，因此人们有理由相信有俄乌拉尔山脉伟晶岩层中发现的亚历山大石与在娜西帕特拉姆发现的亚历山大石同宗同脉。

Recently, a nearly E-W-striking, over 10 km long albitite zone has been recognized for the first time in the Lower Silurian Meiziya Formation in a Lower Paleozoic lead-zinc ore deposit concentration area of the Xunyang basin, South Qinling. It shows a conformable contact and gradational relationships with the country rocks and has thick-bedded and massive, banded, brecciated structures and fine and very fine equigranular and intraclastic textures. It is chemically characterized by enrichment in SiO2, Al2O3 and Na2O and is rich in the trace elements Fe and Mn and poor in the trace elements Co, Ni and Cu. Its ∑REE, LREE and HREE are lower than those of the country rocks and exhibit pronounced Eu depletion.

最近，在南秦岭旬阳盆地下古生界铅锌矿集区内的志留系梅子垭组地层中首次识别出一条近东西方向延伸长达10余千米的钠长石沉积岩带，与地层整合产出，渐变过渡，厚层块状，条带状，角砾状构造，均粒微-细晶结构，内碎屑结构；其化学成分以富含SiO2，Al2O3及Na2O为特征，富Fe，Mn，贫Co，Ni，Cu等微量元素；该钠长石岩的∑REE，LREE，HREE均较围岩偏低，具明显Eu亏损的特征。

Application to the Eopalaeozoic buried hill in the Z oilfield shows that the two types of azimuthal attributes, attenuation gradient and frequency at 85% energy ratio, are closely related to fracture characteristics of carbonate reservoir.

对Z区下古生界潜山碳酸岩储层进行的裂缝预测表明，由衰减梯度和85%能量比频率两种属性导出的裂缝发育密度具有很好的相关性，且与实际情况符合。

The altered dolomite is good reservoir because it contains abundant intercrystalline pores and dissolution pores.

重结晶形成的中—粗晶白云岩不但有丰富的晶间孔隙，而且还发育有大量的因热液溶蚀作用而形成的溶蚀孔隙，是良好的油气储集层，在塔里木盆地下古生界深层油气勘探中应该给予足够的重视。

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。

Super large type sedimentary hydrothermal sulfide ore deposits, located in middle Qinling and west Yinshan mountains, has shown the multi metal and pyrite type deposit The deposits are shown sililay geo geochemistry characteristics to SEDEX sulfide deposits in middle Proterozoic and Paleeozoic Era in the world, i e , ore forming age were 1 4～1 2 Ga and 0 4～0 3 Ga ore bodies show more than 1 000 m long and multi layered distribution, the ore of sulfide rich show massive band...

地质地球化学特征与世界中元古界和古生界中的SEDEX 硫化物矿床基本相同：成矿时代为1－4 ～1－2 Ga 和0－4 ～0－3 Ga，均产于克拉通边缘盆地中；矿体延长达千米以上，具多层性特征；富硫化物矿石为块状条带状，矿物组合简单，有显著分带性；硫同位素组成为海相硫酸盐型，铅同位素为混合程度较高的均匀性铅等。

The study of balanced cross section indicates that its structure has the characteristics of a composite superposition basin. Its double basements are Archaeozoic and Lower Proterozoic crystalline basement and Paleozoic cratonic basin sedimentary rocks. The infill of the sag mainly includes Mesozoic and Cenozoic systems.

平衡剖面研究成果表明其具有复合叠加盆地结构，太古界—早元古界结晶基底和古生界克拉通盆地沉积构成盆地的双层基底，中、新生界是盆地的主要沉积盖层。

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。