居安思危积极推进应急避难场所建设——潍坊应急避难场所建设的几点启示

应急避难场所是为了人们能在灾害发生后一段时期内,躲避由灾害带来的直接或间接伤害,并能保障基本生活而事先划分的带有一定功能设施的场地。良好的地震应急避难场所规划和建设,是在地震发生时群众得以有序、有效避难和疏散的重要保障。本文简述了应急避难场所建设需注意的几点问题。     

《山东国土资源》网上投稿审稿稿件处理状况查询系统开通启事

为了提高办刊效率,《山东国土资源》开通了网上投稿、审稿、稿件处理状况查询系统。欢迎各位作者、专家、读者登陆、使用。     

鲁西台上铁矿床地质特征及矿床成因

台上铁矿床位于鲁西蒙阴县境内,为磁铁石英角闪岩型低品位铁矿床,成因上属沉积变质型铁矿床。矿体以条带状、透镜状为主;矿体规模较小,厚度、品位变化较大;主要矿石矿物为磁铁矿,其次为赤铁矿及褐铁矿,并可见少量黄铁矿;矿石主要呈细粒变晶结构,条带状及浸染状构造;矿石自然类型属需选贫铁矿矿石。矿体属泰山岩群雁翎关组的组成部分,与泰山岩群的形成与演化过程一致,在新太古代泰山岩群雁翎关组地层与岩浆岩接触带附近具较好的成矿远景。     

GIS利器加速山东信息化建设

近日,记者从"2008'SuperMapGIS自主创新与应用(山东)研讨会"上了解到,由山东省地理信息中心等单位联合开发的<山东省工商行政管理经济户口地理信息系统>,有效地实现了工商行政管理部门上下级及各平级单位之间基于空间位置的联动管理(以上说的太大,实际上就是企业监管信息、商标信息的展示).     

地面伽玛能谱测量在稀土矿勘查中的应用——以山东省兰陵县龙宝山稀土矿为例

龙宝山稀土矿是在查证该区航放异常时发现的,通过进一步开展地面γ能谱测量,在龙宝山地区圈定了3处综合放射性异常,进一步缩小了稀土找矿靶区.通过异常查证,发现3个新矿体,取得了较好的稀土矿找矿效果.本文通过分析γ能谱测量在龙宝山稀土矿勘查中的应用,为该区稀土矿的勘查指明了方向,同时分析了该区的找矿前景,为在龙宝山和周边类似...     

汶上县白家店重晶石矿地质特征及成矿地质条件分析

研究区圈定2个矿带4个矿体,呈脉状或透镜状赋存于彩山、毛村断层破碎带内,其中I-Pb+Ba①矿体是区内主要矿体,赋矿岩石为构造角砾岩、碎裂状奥长花岗岩、花岗斑岩,矿体呈脉状,BaSO4含量30.75％～94.85％,平均含量56.97％,主要有重晶石化、萤石化、方铅矿化.分析了白家店重晶石区域地质背景、矿体地质特征、矿...     

山东省汶上县檀家楼铁矿矿床地质特征及找矿前景

檀家楼铁矿床位于山东省汶上县城北,地处东平-汶上铁矿带南段,属"鞍山式"沉积变质型铁矿床.可划分出磁铁矿化带5条,矿体均赋存于泰山岩群山草峪组中,共圈定出磁铁矿体21个,其中主矿体4个,倾向W,倾角65°～82°.矿床平均品位TFe 27.22％,mFe 17.65％.通过对檀家楼地区铁矿地质特征研究,大致查明了檀家楼...     

三维地质模型数据库建设的质量控制——以透视山东项目为例

本文以透视山东的三维地质模型数据库建设为例,以数据录入、钻孔标准化、剖面绘制、三维地质模型建设、三维地质模型检查等建模工作流程为主线,充分利用现有地质资料,最大限度优化提升各环节的操作流程,对数据质量进行质量控制,以保障三维地质模型成果的数据精度,提高建模结果的可靠性,让地质成果为地质找矿、生态文明建设、政府决策、经济发展等提供最重要的支撑和服务。     

The Structure of Ore-controlling Strain and Stress Fields in the Shangzhuang Gold Deposit in Shandong Province, China

The Shangzhuang altered-rock type gold ore deposit is located in the middle segment of and controlled by the Wang＇ershan fault zone in the northwestern part of the Jiaodong gold province, China. The deformation evolution, the structure of strain and stress fields and its ore-controlling effect in the Shangzhuang deposit are discussed in this paper. It is revealed that the deformation evolution has mainly undergone four phases： the early ductile deformation, the second NE-striking horizontal simple shear, the third NE-striking compression-shear and the final NW-striking compression. The mineralization happened during the third stage in which the maximum principal stress gradually transited from NE to NW. The 3-D numerical simulations of the stress field show that, on the condition that the maximum principal stress is NE-striking, the fracture development in the fault zone is favored, while when the maximum principal stress is NW-striking, the fault zone is relatively extensional and it is suitable for the influx and emplacement of ore-forming fluids. The compression-shear strain field during the mineralization is characterized by the λ-type structure, the positive flower structure, etc. Orebodies are mostly equidistantly located in the dilatational spaces, which are distributed in the integral compressional circumstances. And the dilatational spaces are developed where the fault attitude changes or shear joint systems develop. In the overall compression-shear stress field, the strain field bears self-similarity at multiple scales, including the orebody, ore deposit and orefield. The selfsimilarity of the structure comprises the subequidistant distribution of fractures at the same scale and the similar shape of the fractures at various scales. Yet, due to the special geological structure, the orebodies are mostly located in the hanging wall in the Shangzhuang deposit, which is different from most deposits in the Jiaodong gold province. Analyses of the ore-controlling stress and strain fields in the deposit pro     

山东龙口大磨曲家金矿床302 脉深部成矿预测

大磨曲家金矿床位于玲珑金矿田北端。区内共产出大小金矿脉23 条,其中302 脉为主要的开采矿脉,含3 个工业矿体。矿体主要产于主断裂面下盘,由黄铁绢英岩化碎裂岩组成,呈似层状或透镜体状。通过对302 脉矿体厚度、金品位及矿脉米克吨值等分析,矿脉在深部自南向北有较好的金矿化显示,是深部隐伏矿体的找矿标志。矿体厚度在垂向变化上显示由74 线到98 线逐渐降低。根据这些找矿标志,在302 脉深部预测5 处找矿靶区。