Precambrian period

用法例句

The Life Explosion at Cambrian Period brings forth a question and challenge to Darwin s theory of gradual and continuous evolution.

寒武纪生命大爆发 ,对达尔文渐进连续的进化论发出了诘难和挑战 ,本文根据 2 0世纪末现代分子生物学研究的最新成果 ,试探性地解释了寒武纪生命大爆发的成因和机

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.

元古代也是古生代寒武纪(距今5。

Distribution, Types and Characteristics of the Precambrian Lead-Zinc Deposits in Eastern China;

中国东部前寒武纪铅锌矿床的分布及类型特征

Hydrothermal Sedimentary Characteristics of the Precambrian Baritic Rock, Mianning, Sichuan Province;

四川冕宁前寒武纪重晶石岩的热水沉积特征及其矿床成因意义

Fe isotope characteristics of early Precambrian pyrite deposits and their geological significance:examples from Shandong and Hebei Provinces;

早前寒武纪硫铁矿矿床Fe同位素特征及其地质意义——以山东石河庄和河北大川为例

Function of Bioactivities in the Formation of the Sedimentary Copper of the Cambrian in the Southeastern of Jilin, China;

生物活动在吉林东南部寒武纪沉积铜形成过程中的作用

Lithofacies palaeogeography of the Cambrian in Tarim area;

塔里木地区寒武纪岩相古地理

Problems of Cambrian trilobite biogeography;

寒武纪三叶虫生物地理区的一些问题

The authors discuss some major geological issues in Pre-Cambrian and Mesozoic ear in the South -East China in the light of recent geological mapping and re-expound the geological texture of Mesozoic ear in the South-East China.

作者根据近期一系列地质编图所取得的认识,就中国东南部前寒武纪和中生代地质的一些主要问题进行了讨论。

Therefore,the Re-Os age of molybdenite in the Lüliang period not only provides evidence for existence of the Pre-Cambrian metallogenic period,but also shows the prospecting direction to find molybdenum deposits and the metamorphic porphyry-type copper-molybdenum ore in this area.

因此,吕梁期辉钼矿Re-Os年龄的获得,一方面证实了前寒武纪成矿期的存在,另一方面也为该地区寻找钼矿及变斑岩型铜钼矿指出了找矿方向。

The regional ore-forming process was closely related to the Pre-Cambrian crystalline basement.

笔者认为,区域内铅锌(银)成矿与前寒武纪基底变质岩关系密切,矿体产于特定的地层层位和岩性建造(大理岩、含碳碎屑岩)内,并受一定构造部位的控制,华力西期岩浆活动对成矿具有改造变富作用,矿床成因类型属沉积变质-热液改造型层控矿床。

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

(geology) formed in the later of two divisions of the Precambrian era.

（地质学）在前寒武纪后半部分形成的。

IMBRICATED AMALGAMATION TECTONICS IN EARLY PRECAMBRIAN CRATONS

早前寒武纪克拉通内的叠瓦拼贴构造

THE BASIC CHARACTERISTICS OF CAMBRIAN MARINE VOLCANIC ROCKS IN THE NORTHERN QILIAN MOUNTAINS

北祁连山寒武纪海相火山岩基本特征

CAMBRIAN CARBONATE GRAVITY FLOW DEPOSITS IN GUIZHOU AND HUNAN

黔东、湘西寒武纪碳酸盐重力流沉积

A SUMMARY ACCOUNT OF INTERNATIONAL SYMPOSIUM ON METALLOGNY OF THE EARLY PRECAMBRIAN

国际早前寒武纪成矿作用讨论会综述

GRAVITY-DISPLACED DEPOSITS OF CAMBRIAN DEEP-WATER CARBONATES IN WEST HUNAN AND EAST GUIZHOU

湘西黔东寒武纪深水碳酸盐重力沉积

THE GEOLOGICAL EVOLUTION OF THE EARLY PRECAM- BRIAN OF THE TAIHANG-WUTAI MOUNTAINS REGION, CHINA

太行—五台山区早前寒武纪地质演化

PRELIMINARY NOTE ON THE LOWER AND MIDDLE CAMBRIAN STRATIGRAPHY OF POSHAN,CENTRAL SHANTUNG

山东博山下、中寒武纪地层的初步研究

CAMBRIAN EXPLOSION AND SIGNIFICANCE OF THE CHENGJIANG FAUNA

寒武纪生命扩张及澄江动物群的意义

ZONATION AND CORRELATION OF CAMBRIAN FAUNAS IN W.ZHEJIANG

浙江西部寒武纪动物群的分带和对比

ON THE DIVISION AND CORRELATION OF THE PHOSPHORUS-BEARING STAGE DURING CAMBRIAN PERIOD IN BEISHAN AREA

北山地区寒武纪含磷期的划分与对比

STRUCTURAL DEFORMATION OF THE EARLY PRECAMBRIAN ROCK GROUPS IN THE ANSHAN AREA, LIAONING PROVINCE

鞍山地区早前寒武纪岩群的构造变形

NEW MATERIAIS OF CAMBRIAN TRILOBITES FROM BOLHINUR MOUNTAIN, XINJIANG

新疆博罗科努山寒武纪三叶虫新材料

Sedimentation and Sequence Stratigraphy of a Cambrian Ramp in Nanhua Area, Northern Hubei

鄂北南化地区寒武纪缓坡沉积及层序

The Petrological Study of the Precambrian Metamorphic Basement in the Central Tianshan, Xinjiang Province;

中天山前寒武纪变质基底岩石学研究

Study on Cambrian Lithofacies Palogeography in the Bohai Bay and Its Neighbourhood

渤海湾及邻区寒武纪岩相古地理研究

STUDY ON THE SEDIMENTARY ENVIRONMENTS OF THE SINIAN AND CAMBRIAN PHOSPHORITE IN SOUTH CHINA

华南震旦纪和寒武纪磷块岩沉积环境探讨