泸水新城区地质灾害危险性评估   总被引：1，自引：0，他引：1  

康晓莉 《云南地质》2007,26(1):77-82

泸水新城区地质灾害危险性分为三类:危险大(Ⅰ类)占11.04%,危险中等(Ⅱ类)占41.8%,危险小(Ⅲ类)占47.16%。提出防治对策。  相似文献   

大兴安岭北端漠河地区早古生代埃达克质岩特征及地质意义   总被引：3，自引：0，他引：3  

秦秀峰尹志刚  汪岩郭原生  刘旭光周世强 《岩石学报》2007,23(6):1501-1511

笔者近期在大兴安岭北端漠河地区早古生代花岗岩的研究中发现了埃达克质岩,岩石类型主要为二长花岗岩及少量花岗闪长岩,岩石富K但相对略富钠（NaO/K2O＞1）,富SiO2;高Sr低Y、Yb,Sr/Y＞40;富集LREE,亏损重稀土元素,La/Yb＞20,Eu呈弱负异常或轻微正异常（δEu=0.71～1.1）.与典型的俯冲板片熔融形成的埃达克岩相比更为富硅和钾,属高钾钙碱性系列,具有低的Mg#（31.1～34.9）及不同于Ⅰ型埃达克岩的Nd、Sr同位素组成,属Ⅱ型埃达克质岩,推测形成于加厚的中基性下地壳的部分熔融.漠河早古生代埃达克岩的确认表明额尔古纳地块早古生代有过陆壳加厚过程,大陆发生过垂向的增生.同时在德尔布干成矿带中段的本区寻找与埃达克岩有关的斑岩型铜、金矿床是一个新的找矿方向.  相似文献   

云南金平马鞍山钛磁铁矿     

罗太旭 《云南地质》2007,26(1):124-128

钛磁铁矿产于角闪辉石岩、斜长角闪岩、角闪岩等变基性-超基性杂岩体中,是在深部构造活动控制和后期变质作用下形成的晚期结晶分异型矿床。  相似文献   

云龙县红土田电站地质灾害防治     

段家能  孙德瑜 《云南地质》2007,26(2):219-227

通过项目区环境地质条件及地质灾害特征发析,地质灾害危险性评估,结合工程技术经济条件和山区地质灾害发育特点,提出地质灾害防治方案,供工程设计和施工参考。  相似文献   

地质资料日录检索服务系统的建设     

温雪茹  翟国平  李银罗 《国土资源信息化》2007,(5):10-12

本文介绍了我单位地质资料、图书的管理现状,并详细阐述了地质资料目录检索服务系统的设计方案、系统功能、应用成果和不足,能够为其他单位建立地质资料目录检索起参考作用。  相似文献   

首批国际地质科学联合会地质遗产地名录的诞生和意义     

张建平  金小赤 《地质论评》2023,69(3):1075-1084

2022年10月25至28日,国际地质科学联合会在西班牙Zumaia召开的“庆祝国际地质科学联合会成立60周年大会”上,正式向全球公布了国际地质科学联合会国际地球遗产委员会承担的国际地学计划(IGCP)731项目的成果之一：首批100个国际地质科学联合会地质遗产地名录,并发布了“国际地质科学联合会Zumaia宣言”,呼吁国际社会重视和关注地质遗产地的科学研究和保护管理,引起国际地学界和公众极大的关注。基于全程参与该项工作,本文系统介绍国际地质科学联合会地质遗产地名录的由来、发展、遴选程序和过程、地质遗产地的定义和标准,指出建立地质遗产地名录对科学研究和可持续发展的意义,并对今后地质遗产地发展前景进行展望,供读者参考。  相似文献   

翁文灏与陆相生油理论二三事     

张玉珍 《地质论评》2023,69(3):2023030010-2023030010

笔者通过梳理中国早期石油的相关史料,发现民国时期多名地质学家,如翁文灏、谢家荣、王竹泉、潘钟祥、黄汲清、孙健初等,都对陆相生油开展了积极的研究和调查,其中翁文灏不仅自己深入钻研相关理论,还通过他当时的学术职务对这一理论的创新起到了关键引领作用。此外,他调派人员进行充分的石油地质普查,并在重点区域组织石油钻探等实践对陆相生油理论进行了充分的验证。在以往相关研究著述中,薛毅（2005）、李学通（2005,2018）、张叔岩（2006）、陈谦平（2016,2017）等对翁文灏在中国近代石油工业建设中的贡献多有述及,但对翁文灏“陆相生油”理论的创新研究尚付阙如。本文依据相关文献史料,对近代石油工业发展中翁文灏在石油地质学理论研究方面的创新贡献进行考察与分析  相似文献   

1:50 000重庆市奉节县幅灾害地质图数据集          下载免费PDF全文

李刚  杨秀元  李浩  乐琪浪 《中国地质》2018,45(S1):115-122

奉节县是中国三峡库区地质灾害高发区县,区内地形起伏,构造和软弱岩层发育,地质环境较脆弱,通过对研究区开展野外地质调查,查清了区内地质灾害分布规律及孕灾地质背景,整合灾害、地质和地理信息等数据,首次编制了奉节县幅1∶50 000灾害地质图,建立数据集。本文从数据来源、数据收集方法、处理技术等方面进行了整理和归纳,以期呈现地质灾害调查领域灾害地质图数据集应用的实例,为该类型地质调查和数据集处理及应用提供参考。  相似文献   

Geological resources and environmental carrying capacity evaluation review,theory, and practice in China     

《China Geology》2018,1(4):556-565

Evaluations of resources and environmental carrying capacities (GRECC) are the premise of land space planning and use control. Resource allocations and environmental capacity are the basic conditions that restrict development in a region. In this paper, based on a systematic review of China’s geological environment, groundwater resources, mineral resources, other geological resources and the environmental carrying capacity research status, the relationship between the natural resource environmental system and the socio-economic system is studied. Then a “coordination theory of resources and environmental carrying” is proposed. Next, on the basis of an evaluation experiment performed at different scales and for different types of regions, the technical methods for an evaluation of the geological resources and environmental carrying capacity at the regional (inter-provincial) and provincial scales in China are established for the first time. This paper presents a standardized method based on technical ideas, evaluation methods, and index systems for geological resource and environmental carrying capacity evaluation. Finally, an evaluation of the groundwater resource carrying capacity in China is used as an example for the demonstration of the groundwater resource background and use of state evaluation methods.  相似文献   

Study of 3D Geological Modeling Based on Aeromagnetic Data     

Zheng Hou  Tianyi Wang  Changchun Yu  Shengqing Xiong  Long Di 《地球科学进展》2018,33(3):257-269

With the increasing difficulty of finding the shallow surface deposit and the increasing depth of resources exploration, three-dimensional modeling technology is more apparent in deep prospecting, and its accuracy directly determines the cognitive degree of geological body and metallogenic condition. For this, we put forward a set of the extraction technology of abnormal information combined with aeromagnetic data processing with three-dimensional geological modeling. Inversing the selected profile of the study area and obtaining each profile geological model, we built three-dimensional geological model of geological units by the method of profile linked, using undulating terrain three-dimensional block magnetic field forward techniques to model the three-dimensional geological model of the whole area, and obtained the forward modeling results of the whole three-dimensional geological model and the geological unit. After the comparative analysis with the test result, adding reasonable geological constraints and revising model, through adjusting for many times, we made the model maximum close to the actual situation. The model can well reflect the geological information and make minimum fitting error of observations and theoretical field, with which geologists can use the most of their experience and get more regional geological understanding. Using the thought of main block and secondary block to subdivision modeling of geological body, on the condition of ensuring the accuracy of model, the number of the total model block decreased and the multi-window and multi-geological body parallel computing method were used to improve the modeling speed, effectively solve the limitation problem of the model complexity in the process of the three-dimensional inversion modeling method, and easily form complex and different sizes three-dimensional geological model. We applied this method to the Hubei Daye area, constructed the three-dimensional geological model of Daye Iron Mine, and verified the feasibility and rationality of this method.  相似文献