地理信息系统GIS在地籍、地形测量中的运用     

张佐成  李凯  苏令 《贵州地质》2003,20(4):260-263

本文利用地理信息系统(GIS)对测绘地形、地籍以及生成土地证、房产证等一些图件进行说明，并作相应的转换处理，满足了地籍管理工作的需要。  相似文献   

Geochemistry of Mesoproterozoic Volcanic Rocks in the Western Kunlun Mountains: Evidence for Plate Tectonic Evolution   总被引：1，自引：0，他引：1  

ZHANG Chuanlin  DONG Yongguan  ZHAO Yu  WANG Aiguo  GUO Kunyi Guiyang Institute of Geochemistry  Chinese Academy of Sciences  Guiyang  Guizhou  E-mail: zchuanlin@sina.com Nanjing Institute of Geology  Mineral Resources  Nanjing  Jiangsu 《《地质学报》英文版》2003,77(2):237-245

Mesoproterozoic volcanic rocks occurring in the north of the western Kunlun Mountains can be divided into two groups. The first group (north belt) is an reversely-evolved bimodal series. Petrochemistry shows that the alkalinity of the rocks decreases from early to late: alkaline→calc-alkaline→tholeiite, and geochemistry proves that the volcanic rocks were formed in rifting tectonic systems. The sedimentary facies shows characteristics of back-arc basins. The second (south belt) group, which occurs to the south of Yutian-Minfeng-Cele, is composed of calc-alkaline island arc (basaltic) andesite and minor rhyolite. The space distribution, age and geochemistry of the two volcanite groups indicate that they were formed in a back-arc basin (the first group) and an island arc (the second group) respectively and indicate the plate evolution during the Mesoproterozoic. The orogeny took place at -1.05 Ga, which was coeval with the Grenville orogeny. This study has provided important geological data for explorin  相似文献   

Cenozoic Adakite-type Volcanic Rocks in Qiangtang, Tibet and Its Significance   总被引：6，自引：0，他引：6  

LIU Shen  HU Ruizhong  FENG Caixi  CHI Xiaoguo  LI Cai  YANG Rihong  WANG Tianwu  JIN WeiGuiyang Institute of Geochemistry  Chinese Academy of Sciences  Guiyang  Guizhou E-mail: lliushen@hotmail.comGraduate School of the Chinese Academy of Sciences  Beijing College of Earth Sciences  Jilin University  Changchun  Jilin Aero Geophysical & Remote Sensing Center  Beijing 《《地质学报》英文版》2003,77(2):187-193

Volcanic rocks in the study area, including dacite, trachyandesite and mugearite, belong to the intermediate-acid, high-K calc-alkaline series, and possess the characteristics of adakite. The geochemistry of the rocks shows that the rocks are characterized by SiO2>59%, enrichment in A12O3(15.09-15.64%) and Na2O (>3.6%), high Sr (649-885 μg/g) and Sc, low Y contents (<17 μg/g), depletion in HREE (Yb<1.22 μg/g), (La/Yb)N>25, Sr/Y>40, MgO<3% (Mg<0.35), weak Eu anomaly (Eu/Eu=0.84-0.94), and lack of the high field strength elements (HFSE) (Nb, Ta, Ti, etc.). The Nd and Sr isotope data (87Sr/86Sr=0.7062-0.7079, 143Nd/144Nd=0.51166-0.51253, εNd= -18.61-0.02), show that the magma resulted from partial melting (10%-40%) of newly underplated basaltic lower crust under high pressure (1-4 GPa), and the petrogenesis is obviously affected by the crust's assimilation and fractional crystallization (AFC). This research will give an insight into the uplift mechanism of the Tibetan plateau.  相似文献   

胶莱盆地层控型金矿含矿岩系的成岩及成矿作用机理探讨   总被引：2，自引：2，他引：2  

李明琴  张竹如等 《地质与勘探》2002,38(3):33-37

对胶莱盆地蓬家夼与宋家沟两金矿的矿区地质特征，含矿岩系的岩石学，成矿元素，主量元素，微量元素，稀土元素以及碳、氧，硫稳定同位素等地质地球化学特征进行研究。结果表明；两矿床中金矿体的形成和分布受莱阳群及其中的断裂控制，莱阳群既是含矿层，又是矿源层，含矿岩系主要为陆源碎屑岩类，其沉积环境为河、湖相，讨论了含矿岩系的成岩及成矿作用机理。  相似文献   

高温高压下斜长岩纵波速度与电导率实验研究   总被引：2，自引：0，他引：2       下载免费PDF全文

白利平  杜建国  刘巍  周文戈 《地震学报》2002,24(6):638-646

在1.0 Pa、室温到880℃分别采用超声波透射法和阻抗谱法测量了斜长岩的纵波速度和电导率，并对实验产物进行了鉴定分析．结果表明，在680℃，由于斜长岩中的含水矿物绢云母和黝帘石发生脱水反应，岩石的纵波速度开始大幅度下降．在410℃～750℃、12～105 Hz的频率范围内，斜长岩只出现颗粒内部传导．由于脱水产生的自由水主要分布于矿物的三联点或颗粒拐角处，没有形成连通的高导性网络，因此，脱水作用不会导致斜长岩电导率显著增加，也不会改变其电传导机制．地球内部低速层和高导层的形成与演化可能具有非同步性，通过含水矿物脱水可以形成地球内部的低速层，但不一定同时形成高导层．   相似文献   

能源补贴政策及其改革——为减排提供经济激励     

庄贵阳 《气候变化研究进展》2007,3(Z1):92-96

The subsidy, as a measure, is widely applied by governments at all levels around the world as a way of policy interventions. However, there are two completely opposite opinions of subsidies on energy and environmental protection. The only reason for subsidy in existence is the internalization of external benefit. The paper firstly examines the energy subsidy policies relevant to climate change mitigation in China and their effectiveness, then points out the deficiency existing in energy conservation policies and renewable energy development policies, and finally suggests that China should exert positive role of subsidy policies and reduce negative effects in promoting climate change mitigation.  相似文献   

中英合作“通过激励机制促进低碳发展“项目启动          下载免费PDF全文

庄贵阳 《气候变化研究进展》2005,1(3):140-140

2005年7月19日中国社会科学院可持续发展研究中心在北京召开研讨会,正式启动“通过激励机制促进低碳发展”研究项目。英国驻华使馆的官员、国家发展和改革委员会国家气候变化对策协调小组办公室的官员参加了会议。  相似文献   

Properties of Klebsiella phage P13 and associated exopolysaccharide depolymerase     

LIU Yang  LI Guiyang  MO Zhaolan  CHAI Zihan  SHANG Anqi  and MOU Haijin 《中国海洋大学学报(英文版)》2014,13(1):163-168

The bacteriophage P13 that infects Klebsiella serotype K13 contains a heat-stable depolymerase capable of effective degradation of exopolysaccharide(EPS) produced by this microorganism. In this study, the titer of phage P13, initially 2.0 × 107 pfu mL-1, was found increasing 20 min after infection and reached 5.0 × 109 pfu mL-1 in 60 min. Accordingly, the enzyme activity of depolymerase approached the maximum 60 min after infection. Treatment at 70℃ for 30 min inactivated all the phage, but retained over 90% of the depolymerase activity. Addition of acetone into the crude phage lysate led to precipitation of the protein, with a marked increase in bacterial EPS degradation activity and a rapid drop in the titer of phage. After partial purification by acetone precipitation and ultrafiltration centrifugation, the enzyme was separated from the phage particles, showing two components with enzyme activity on Q-Sepharose Fast Flow. The soluble enzyme had an optimum degradation activity at 60℃ and pH 6.5. Transmission electron microscopy demonstrated that the phage P13 particles were spherical with a diameter of 50 nm and a short stumpy tail. It was a double-strand DNA virus consisting of a nucleic acid molecule of 45976 bp. This work provides an efficient purification operation including thermal treatment and ultrafiltration centrifugation, to dissociate depolymerase from phage particles. The characterization of phage P13 and associated EPS depolymerase is beneficial for further application of this enzyme.  相似文献   

四川盆地白垩纪构造层序、岩相古地理及演化   总被引：1，自引：0，他引：1  

隆轲  陈洪德  林良彪  徐胜林  程立雪 《地层学杂志》2011,(3):328-336

四川盆地白垩系可划分为2个构造层序,构造层序内部以最大湖泛面为界分为湖盆扩张期的沉积层序和湖盆收缩期的沉积层序。以沉积层序为编图单元,编制了四川盆地白垩纪的4张岩相古地理图,反映了四川盆地白垩纪的古地理特征及盆地演化,在早白垩世（TS1）期间沉积相主要沿着龙门山系呈东北向展布,发育有冲积扇、冲积平原、河流、湖泊等沉积相...  相似文献   

Conodont Biostratigraphy and Age Determination of the Lower-Middle Triassic Boundary in South Guizhou Province,China     

YAO Jianxin  JI Zhansheng  WANG Liting  WANG Yanbin  WU Zhenjie  LIU Dunyi  WU Guichun  ZHANG Jianwei  LI Suping Institute of Geology  Chinese Academy of Geological Sciences  Beijing  China Guizhou Bureau of Geology  Mineral Resources  Guiyang  China 《《地质学报》英文版》2011,(2)

The demarcation of the Lower-Middle Triassic boundary is a disputed problem in global stratigraphic research.Lower-Middle Triassic strata of different types,from platform to basin facies, are well developed in Southwest China.This is favorable for the study of the Olenekian-Anisian boundary and establishing a stratotype for the Qingyan Stage.Based on research at the Ganheqiao section in Wangmo county and the Qingyan section in Guiyang city,Guizhou province,six conodont zones have been recognized,which ca...  相似文献