查询词典 geologic time

4D geologic model has been widely applied to analyses of palaeostructure,palaeogeomorphology and depositional setting.

目前四维地质模型广泛应用了古构造、古地貌和沉积环境的分析中。

The results show that the diagenetic stages of different geologic history and distribution of source-reservoir-cap can be predicted by the improved method.

研究表明，改进后的方法能够预测不同地史时期的成岩阶段和生、储、盖层的发育；在研究区东北侧的成岩阶段为晚成岩A1期，西北侧和南侧为晚成岩A2期。

According to geologic settings, distribution regularities of ore deposit and major metallogenesis in metallogenic belts, it was thought that typical deposits in metallogenic belt of North of Eastern Kunlun is Kendekeke SEDEX-hydrothermal diplogenetic Co, Bi, Au deposit and Baiganhu hypothermal W, Sn deposit, that in metallogenic belt Middle of Eastern Kunlun is Wulonggou orogenic gold deposit, that in metallogenic belt South of Eastern Kunlun is Tuolugou SEDEX Co deposit, and that in metallogenic belt of A'nyemaqen-Bayan Har is Dachang orogenic gold deposit.

通过对各成矿带的地质背景、矿床分布规律和主要成矿作用进行研究，认为东昆北成矿带的典型矿床包括肯德可克热水喷流沉积-热液叠生改造型钴、铋、金矿床和白干湖高温热液型钨、锡矿床；东昆中成矿带的典型矿床是造山型五龙沟金矿床；东昆南成矿带的典型矿床是驼路沟热水喷流沉积型钴矿床；阿尼玛卿-巴颜喀拉成矿带的典型矿床是大场造山型金、锑矿床。

The paper outlined the basic structure of landforms, analysed the external agencies which acted on the modern landforms, and discussed the geologic structure and the surface material which affected the Iandforms in the Drung river basin.

文章首先概述独龙江流域的地貌基本形态结构，分析现代地貌作用的外营力，讨论地质构造和地表物质对研究区地貌形成的作用和影响。

Since the Present Epoch, large scale glaciation has ceased. Especially the ending of the Younger dryas Event about 10Ka ago, led to global warming in a rapid way. Contemporary glacial geologic process since the Present Epoch began in the global.

全新世以来，大规模冰川作用已停止，特别是距今1.0万年前后的新仙女木事件的结束，全球性快速增温，以结束LGM未次冰期而进入全新世以来的现代冰川地质作用。

Based on the achievements and developm ents in studying natural gas hydrates at home and abroad,the mechanism of causi ng the oil and gas reservoirs to be tightly sealed by the natural gas hydrates i s systematically analyzed in the paper through discussing the formation mechani sms,evolution properties and distribution laws of the natural gas hydrates.In li ght of the research on their control effects on petroleum accum ulation and reservoir preservation,several geologic models of oil and gas accumu lation and preservation related to the natural gas hydrates are proposed,such as vertically and laterally screened models,screened-by-drape and screened-by- contact models and syngenetically and epigenetically screened models,etc.

以国内外天然气水合物的研究成果和进展为基础，通过讨论天然气水合物的形成机制、演化特征以及其分布规律，系统分析了天然气水合物可以得天独厚地封盖油气藏的机理，探讨了其对油气藏尤其是气藏聚集和保存的控制作用，提出了天然气水合物聚集和保存油气的多类地质模式，如垂向遮挡和侧向遮挡、披覆遮挡和接触遮挡以及同生遮挡和后生遮挡等。

Exogenic geologic process and human action promote thegeological hazard and accelerate occurrence of hazard.

从根本上看，地应力作用即内动力作用是形成地质灾害的基础，外动力和人为活动加剧了地质灾害的发生，起促进和激化作用。

Its opinion is that there was fine geologic base and centuries-old exploitive history in north China and the traditional exploitive means were continued to the early Qing dynasty.

本文首先回顾了华北煤炭开发的地理、历史条件，认为华北煤炭开发具有优良的地质基础及悠久的开发历史，而清代前期传统的煤炭开发方式正是此历史的延续。

Currently, in the oil-field exploitation, existing the phenomenon of garbling the lack thickness of stratum with vertical fault-throw in well logging identification of strata while meeting fault in drilling well. In most case, consider the lack thickness of stratum which contrast the imperfection geologic strata thickness to the well and the well as the fault-throw. The method which using very popular in oil-field exist shortages, it very much easily lead people into the areas of misplay. especially when the seismic person and geology confirm the fault-throw, It often appear inconsistent instance.

目前，在油田开发中钻井钻遇断层时，地质人员时常存在将测井分层与相邻井对比时缺失地层厚度与铅直地层断距混淆的现象，很多情况下把井与井对比缺失地层厚度等同于断层断距等，这些现今在油田非常流行的用法存在一些不足之处，容易把人们引入一些认识上的误区，特别是在地震与地质人员进行断层断距的确定时，经常出现矛盾的情况。

In order to explore the grain-size distribution characteristics and geo-genetic types of land desertification in Mo Us desert, the research on the grain-size characteristics of sediments since late Pleistocene has been carried out in the desert area and neighboring area such as inside desert, sand covered loess plateau, loess plateau and river valley. The research result shows that sediments of different geologic genetic types are the fundamental material source of sandy desertification in these areas and the distinguishing of different types of the sediments is the theoretical basis of classification of different geogenetic type of sandy desertification. The contribution of different geological roles on the land desertification and its significance to prevent and deal with the land desertification have also discussed.

为了研究毛乌素沙地沉积物的粒度特征与土地沙漠化的地质成因类型，通过系统研究沙地及相邻地区晚更新世以来在沙地内部、覆沙黄土区、黄土高原和河流谷地与湖泊等不同地质构造地貌条件下所形成的沉积物粒度特征，指出不同地质成因类型的沉积物是这些地区土地沙漠化的物质基础，区分不同类型的沉积物也是构成不同地质成因类型土地沙漠化分类的理论基础，探讨了不同地质作用对土地沙漠化的贡献及其对土地沙漠化防治方面的意义。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。