Two main glacial epochs affected both areas during the last 100 million years of Precambrian times. 在前寒武纪的最后1亿年中,两个主要的冰川时期对两个地区都产生了影响。
The tectonic frame and subdivision of tectonic units of the world Precambrian basement are essential for paleocontinent reconstruction. 全球前寒武纪基底构造格架与构造单元的划分是古大陆再造和泛大陆拼合的重要基础。
Early Precambrian continental crust basement and its compositional features in South China 华南早前寒武纪陆壳基底及其组成特征
Stromatolite and molar-tooth structures are two kinds of peculiar Precambrian sedimentary phenomena, attracting great attention from geologists. 叠层石和臼齿构造是前寒武纪较为引人注目的两种沉积现象。
Hf Isotope Composition and REE Pattern of Zircons from Early Precambrian Metamorphic Rocks in the Daqing Mountains, Inner Mongolia 内蒙古大青山地区早前寒武纪变质岩的锆石Hf同位素组成和稀土模式
Petrochemical compositions indicate that these early Precambrian intrusive rocks correspond to the I-type granites and consistently show LREE-enriched patterns. 岩石的化学成分表明,鲁西早前寒武纪侵入岩与Ⅰ型花岗岩相当,且均属轻稀土富集型;
Three main styles of Early Precambrian metamorphic evolution in northern Sino Korea Craton and their geodynamics 内蒙集宁三岔口地区早前寒武纪变质作用演化研究中朝克拉通北部早前寒武纪变质作用演化的三种主要样式及其地质动力学
Chemical features and geological; significance of amphibole in early Precambrian metamorphic rocks of North China Platform 华北地台早前寒武纪变质岩系中角闪石的化学组分特征
Among them the Precambrian and Cenozoic eras are the main metallogenic epoches in the world. 就全球而言,前寒武纪和新生代是金矿的重要成矿期。
This paper has made a detailed analysis of the temporal and spatial distribution of Precambrian mineral deposits in China. 文章详细地分析研究了中国前寒武纪矿床的时空分布。
Analysis on the strain conditions of Early Precambrian metamorphic rocks in Baiyun gold deposit, fengcheng, Liaoning Province 凤城白云金矿早前寒武纪变质岩系应变的环境条件分析
New recognition on some geological problems related to the Early-Middle Precambrian in the western Shandong mountainous region 鲁西山区与早、中前寒武系有关的几个地质问题的新认识
Gneiss, a metamorphic rock, can be commonly found in Precambrian areas. 片麻岩,变质岩,可以发现,在常见的前寒武纪地区。
Forming Ages of Early Precambrian Metamorphic Strata in Shandong Province& Proofs of Zircon SHRIMP U-Pb Dating 山东早前寒武纪变质地层形成年代&锆石SHRIMPU-Pb测年的证据
Chemical fossils ( e.g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age. 化学化石(烷烃和卟啉)是前寒武纪地层中生命存在的唯一证据。
Geological record of Early Precambrian oceanic crust and its implication for plate tectonics 早前寒武纪洋壳的地质记录及其板块构造意义
That history began with the origin of the primitive, unicellular aquatic algae of the Precambrian Eon. 最初,前寒武纪出现原始的单细胞水生藻类,除了蓝绿藻和细菌之外。
Review and deliberation of the researches on Early Precambrian metamorphic stratigraphy 早前寒武纪变质地层学研究的回顾与思考
The Precambrian crystalline rock series in the Yadong area is previously called "the Nyalam Group". 藏南亚东地区前寒武纪结晶岩系以往统称为“聂拉木群”。
The Early Precambrian Collisional Orogenic Process and Plate Tectonics: Chance and Challenge of Precambrian Geology 早期碰撞造山过程与板块构造:前寒武纪地质研究的机遇和挑战
Discovery of Authigenic Rare Earth Mineral-Monazite in Precambrian Sedimentary Rock of Dalian Area and its Significance 大连地区前寒武纪沉积岩中发现自生独居石及其意义
Sedimentary rocks show pollen in very deep," Precambrian "strata. 水成岩指出了前寒武层的花粉传授。
The geochemistry model and the significance of two kinds of granitic rocks in early Precambrian period in Liaoning 辽宁省早前寒武纪两类不同花岗质岩石元素地球化学模型及意义
The Precambrian intrusive rocks in western Shandong area mainly fall into two parts: the Taishanian ( Archean) and the Aolaishanian ( early Proterozoic) intrusive rocks. 鲁西地区的前寒武纪侵入岩分为太古代泰山期和早元古代傲徕山期二部分。
Boundary event between Precambrian and Cambrian periods in special reference to carbon and oxygen isotopes 碳氧同位素与前寒武纪和寒武纪边界事件
Structure styles and characteristics in early Precambrian crystalline basement in the northern margin of Yangtze Platform 扬子地台北缘早前寒武纪结晶基底构造样式及变形特征
Driving to work through the rugged Precambrian Shield northeast of Winnipeg, he collided with an enormous moose. 开车去上班,通过崎岖的东北前寒武纪盾温尼伯,他撞上了巨大的驼鹿。
Important new progress in study on Early Precambrian stratigraphy of China 我国早前寒武纪地层研究的主要新进展
The paper presents the distribution and geologic characteristic of early Precambrian migmatitic granite and granite in Liaoning province. 研究了早前寒武纪辽宁省混合花岗岩和花岗岩的分布及岩石特征。
Flaser-lenticular beddings in carbonate rocks of the upper Precambrian Gaoyuzhuang Formation in the Ming Tombs area, beijing 徐宿地区上前寒武系地层单元界面的穿时特征与意义北京十三陵上前寒武系高于庄组碳酸盐岩中的压扁-透镜状层理