白垩的

Archeology tells us that the Late Cretaceous was the last one the Mesozoic world, it has a large reptiles dominated the earth's sudden disappearance to an end; Paleocene is the new generation of the first world, it replaced the rapid development of mammals opened the earth and the latest scene in the history of biological evolution.

考古学告诉我们，晚白垩世是中生代最后一个世，它以曾经主宰大地的大型爬行类的突然消失而告终；古新世是新生代的第一个世，它以取而代之的哺乳类动物迅速发展而拉开地球和生物演化史的最新一幕。

The Dabie Mountains are unique among ultrahigh pressure metamorphic terranes in having the most profound post collisional plutonism The Mesozoic shoshonitic and calc alkaline intrusive rocks can be divided into three groups with different isotopic ages, rock assemblages and chemical features Group I consists of late Triassic (~ 210 Ma) mafic monzodiorites It could have been generated by partial melting of enriched subcontinental lithosphere mantle due to slab breakoff Group II consists ma...

第 I组，主要由晚三叠世（约210 Ma）二长闪长岩辉长岩体组成，它可能是在板片断离过程中富集的大陆岩石圈地幔部分熔融的产物；第I I组，由中侏罗世－早白垩世（160～120 Ma）的角闪石英二长岩、黑云母二长花岗岩和正长花岗岩组成，主要是由幔源岩浆的分离结晶与地壳混染共同作用的产物；第II I组，以白垩纪（125～95 Ma）的花岗岩和花岗斑岩为代表，是在热穹窿作用过程中大别杂岩深熔作用和高度演化的产物。

The new progresses:(1)the anatomic studies on the leaves, stems and cones of 25 species Late Mesozoic conifers, particularly those very similar to the living genera, such as Athrotaxites, Torreya, Taxus, Cephalotaxopsis, Cunninghamia and the cheirolepidaceous conifers, such as Brachyphyllum and Psudofrenelopsis;(2) the distribution and evolution of the Late Mesozoic conifers, the relationship between the concentration of CO2 of the atmosphere and the stoma index of the gymnosperms during the Middle Jurassic and Early Cretaceous;(3) the characters, compositions and ages of the Jurassic floras of Yabula Basin, and Erlian Basin of Inner Mongolia and the Early Cretaceous floras and Jiuquan basin and Beishan Area of Gansu.

对12属25种中生代松柏类的枝叶、球果及茎干化石进行了解剖研究，特别是对与现生松柏类相似的Athrotaxites， Torreya， Taxus， Cephalotaxopsis， Cunninghamia及可能属于掌鳞杉科的Brachyphyllum， Psudofrenelopsis等的研究较为深入，发现了4个新种；总结了中国晚中生代松柏类的特点及分布，讨论了重点属的起源和演化问题；研究了中侏罗世、早白垩世及现代裸子植物包括松柏类气孔与大气CO2浓度关系，发现气

On the other hand, some deciduous gymnosperms including Ginkgoales, and the presence of growth rings in the fossil secondary wood, indicate seasonal changes.

植物组合中以丰富的热带及亚热带型植物为主要特点，未发现针叶类型的植物，说明早白垩世穆棱组沉积时，该地区的气候温暖湿润；另一方面，落叶的银杏类和松柏类，以及裸子植物木化石中具有清楚的生长轮，又说明该地区的古气候存在着季节变化。

By analyzing in detail the structural evolutionary history, from Mesozoic to Cenozoic, of different rift belts in western, northern, central and eastern Africa, the authors think that the Mellit area was on the northwestern shoulder of the South Sudan Rift. The rotation of the Mellit block toward northwest was the outward rotation of the northwestern shoulder of the South Sudan Rift during the rifting phase, and the rotation toward southeast was the inward rotation of the rift shoulder during the post-rift thermal sag episode.

经过详细分析非洲大陆西部、北部、中部和东部中新生代裂谷带的构造演化史后发现：Mellit地块实际上位于南苏丹裂谷带的西北裂谷肩上，该地块自晚白垩世初期至中新世初期，向NW方向倾斜是南苏丹裂谷带于裂谷化阶段造成的裂谷肩块体的向外旋转；该地块自中新世以来向SE方向倾斜是南苏丹裂谷带在后裂谷热沉降阶段造成的裂谷肩块体的向内旋转。

The research shows that these basins alternate between uplift and concave and that their spreading directions follow certain rule. The 6 NEE-trending basins are of early Jurassic epoch, some of which may contain coal-bearing strata and minable coal seams of Beipiao Formation. The 12 NNE-trending basins are all of early Cretaceous epoch, among which Badaohao, Leijia and Xielintai Basins have relatively good coal-bearing property and can serve as coal-searching prospect area.

研究表明区内这些盆地的呈&隆、凹&相间的格局，且展布方向有一定的规律性，而且呈NEE方向展布的6个是早侏罗世盆地，其中有的可能存在北票组的含煤地层和可采煤层；而呈NNE方向展布的12个均是早白垩世盆地，其中如八道壕、雷家和谢林台等含煤性较好，可作为找煤的远景区。

The comprehensive study on the sedimentary features in the early Cretaceous of Tanan Depression showed that the different kind of fault slope belts resulted from syn-sedimentary tectonic movement in the paleo geomorphology controlled the formation and distribution of sedimentary system.

对早白垩世沉积充填特征的综合研究表明，长期活动的同沉积断裂形成的、古地貌上突变的各种断裂坡折带对盆内沉积体系的发育及分布起到重要的控制作用。

It's a place of churned butter and soft runny cheese, where broad fields and dry-stone farmhouses perch on the edge of chalk-white cliffs, and the salty tang of the sea is in the air.

到处都可看到搅拌过的黄油和软软的乳酪。广阔的田野、干燥的石砌农舍耸峙在白垩色的悬崖上。海水夹带的咸味弥漫在空气中，辛辣刺鼻。

It's a place of churned butter and soft runny cheese, where broad fields and dry-stone farmhouses perch on the edge of chalk-white cliffs, and the salty tang of the sea is in the air.

在这里，宁静的乡村与海峡翻滚的波涛相映成趣。到处都可看到搅拌过的黄油和软软的乳酪。广阔的田野、干燥的石砌农舍耸峙在白垩色的悬崖上。海水夹带的咸味弥漫在空气中，辛辣刺鼻。

Archie's electrical parameters of complex pore texture in sandstone reservoir.;2. Based on methods of core analyses,petrographic images,capillary pressure curves and T2 relaxation time curves of nuclear magnetic resonance,the microscopic characteristics of pore texture and evaluation for the Fu-Yang oil reservoirs are comprehensively studied.

根据岩心、岩石图像、毛细管压力曲线分析和核磁共振测量T2弛豫时间曲线等方法，对三肇地区白垩系泉头组扶、杨油层低渗透储集层的孔隙结构进行评价及综合研究，讨论3个问题：(1)储层中孔隙度和渗透率的关系；(2)孔隙结构的微观特征及其对渗透率的影响；(3)储层的渗滤能力、可动流体饱和度及储层评价。

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。