元古代

Chen Xiaode%Shi Lanbin Study on the Proterozoic dyke swarms in North China Seismology and Geology , 1992,4

陈孝德%史兰斌华北元古代基性岩墙群研究地震地质， 1992，4

Study of Iron Cosmic Spherules from 1.8 Ga and 1.6 Ga Proterozoic Strata of the Ming Tombs District, Beijing

北京十三陵中元古代1.8Ga和1.6Ga的铁质宇宙球粒研究，宋天锐；和政军；万渝生；刘燕学-66文免费论文库，大学生论文库

The Early Proterozoic volcanic rocks of the Liaodong area are the important part of composition of Lower Proterozoic Liaohe Group. They are composed of two suites of the acid and basic volcanic rocks.

辽东地区早元古代火山岩是下元古界辽河群地层的重要组成部分，它们由酸性和基性两套火山岩组成。

The relationship between the proterozoic Era and explosive evolution of the life on the Cambrian period was preliminary explored by an Ecological and Evolutionary approach in this paper.

距今38亿年前地球最早生命诞生以来，至元古代早期第一个真核细胞开始出现；从无性分裂或出芽繁殖的原核生物到有性繁殖的真核单细胞生物以及从单细胞的原生动物到真核多细胞的后生动物的进化，无疑是生命进化过程中非常重要的事件。

The Middle Upper Proterozoic Haijiushan Formation and Upper Silurian Shuangliuzhou Formation have been newly established.

根据对西汉水群的详细解体、划分，首次在西和—成县地区发现元古代地层单元。

The rhyolite of upper Luliang Group is a typical A-type volcanic rock and is a constituent member of an A-type volcanic - intruded complex in this area.

研究表明吕梁群流纹岩是一个典型的早元古代A型流纹岩，是本区A型火山一侵入杂岩的组成部分。

The comparison of this pole with paleomagnetic data from others paleo-continent supports the hypothesis of Columbia supercontinent.

通过与Laurentia、Baltica和Siberia可靠的古地磁数据对比，支持了古－中元古代可能存在Columbia超级大陆的假说。

The Huade Group underwent at least two phases of deformation:the early phase of deformation gave rise to ENE-trending synclinorium and the late phase was marked by tectonic superimposition,forming NNW-trending folds. The main phase of deformation likely occurred in ~2.0 Ga B.P.The deformation of the Huade Group is related to a Paleoproterozoic orogenic event along the northern margin of the North China Craton, which has great significance for the study of accretion and breakup of the North China Craton.

化德群经历了两期构造变形，早期为北东东走向的复式向斜，晚期又遭受了构造叠加，形成了北北西向褶皱构造，其主期变形可能发生在2.0 Ga左右，它的褶皱造山是华北克拉通在古元古代向北增生的体现，这对研究华北克拉通的增生，裂解具有重要意义。

The continental mantle geochemical characteristics and crust-mantle evolution in the west of Yangtze Plate was discussed through the study of some within-plate basic ultrabasic rocks from Lower Proterozoic to Later Paleozoic in this paper.

本文通过对扬子板块西部从早元古代至晚古生代不同时期的多个板内基性超基性岩的地质地球化学研究，探讨了扬子板块西部大陆地幔的地球化学特征及壳幔演化机制。

The pot shaped peak is formed along the joints and fissures with the weathering and eroding of Adamellite formed 2.4billion years ago.

24亿年左右形成的古元古代二长花岗岩，沿节理裂隙风化剥蚀后形成的壶状山峰。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。