元古代的

LA-ICPMS U-Pb Dating of Zircons from Two Types of Leucosomes in North Dabie Unit: Evidences for Paleoproterozoic Anatexis and Triassic Subduction?

篇名 北大别两类浅色体的锆石LA-ICPMS年龄－古元古代深熔作用和三叠纪俯冲证据？

At the end of Palaeoproterozoic (ca.1 600 Ma or 1 800 Ma), along with the Machonlyong Sea closed, the Rangrim and Gwanmo microcontinents became a whole massif through collision, which called Machonlyong motion (corresponding to Luliang motion in China).

古元古代末（约1600或1800 Ma），随着摩天岭海闭合，狼林微陆块与冠帽微陆块通过碰撞聚合而形成一个整体，称为摩天岭运动（可以对比中国的吕梁运动）。

Research on the main rock-forming minerals of Middle Proterozoic Subera Yingfeng rapakivi granite in the North Qaidam Basin tectonic belt indicates the magmatic body exhibits pyterlitic rapakivi texture,and each main mineral is polygenetic.K-feldspar mainly takes the form of oval phenocryst,and exsolved albite stripe is well-developed.

柴北缘构造带中元古代鹰峰环斑花岗岩主要造岩矿物的研究结果表明，该岩体具pyterlitic型环斑结构，各主要矿物均具多世代特征。

Early Proterozoic magmatic activity is one important part of Precambrin crustal evolution of the studied area.

早元古代岩浆活动是研究区地壳演化的重要组成部分。

As only one kind of fossil in Proterozoic,stromatolite is an important material in the paleo-geography changing study.

元古代叠层石是研究古地理变化的重要材料。

Early stage mineralization is related to the formation and evolution of early Proterozoic NW-trending ductile shear zone.

本区经历了主要的两期金矿成矿事件，早期金矿化与早元古代NW向韧性剪切带形成及演化有关。

These source rocks developed with strata from Middle Proterozoic to Cenozoic,among which the Mesozoic and Cenozoic layers are the most important.

在地质时代上，从中元古代到新生代均有烃源岩分布，最重要的是在中、新生代。

The above new data give the information of the possible existence of Proterozoic basement in this district, and Yanshanian magmatism is of great significance for mineralization in the district.

以上这些新资料说明该区可能存在元古代基底的信息，且燕山期岩浆活动对本区成矿具有重要意义。

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 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。