Active Fault and Volcanic Activity in the Longhai-Zhangpu Coastal Area, Fujian Province

INTRODUCTION TheLonghai ZhangpucoastalareaofFujianProvinceliesonthesouthernsideoftheoutletofthe JiulongjiangRiver.Tectonically,itislocatedonthesouthernsegmentoftheChangle Zhao’anfault zone.Previously,alotofseismogeologicresearchworkhasbeencarriedoutinthi…     

The Quantitative Identification of Regional Mine and Natural Earthquakes and Its Application

INTRODUCTIONThe structural mine earthquake in coal mines refers to the quake induced by excavationengineeringthatleadstorupturingor change of geological structure and weakness surfaceintheinteriorof rock mass.According to the origin,mine earthquakes can b…     

山东泰安朱家庄自然硫矿床地质概要

山东省泰安朱家庄自然硫矿床,赋存于鲁西断隆古近纪汶东陆相盆地。自然硫矿层在汶口组二段上亚段,泥质灰岩-含泥灰岩-含云灰岩-石膏岩韵律层中的白云岩-石膏岩层段发育。自然硫以胶态、晶态、土态3种形态产出,可划分为顺层型、准顺层型、斑杂型及不顺层型4大类10余种矿石类型。从矿区去膏化作用普遍、自然硫与石膏-硬石膏分别富集轻-重同位素的特征、油气显示明显及地下水主要径流方向自然硫矿化最强等各种证据,表明该矿属生物后生成因的矿床。     

邢台矿大青灰岩水文地质条件及疏水降压可行性研究

针对邢台矿5号煤层底板大青灰岩发生209m3/h突水量的情况,本文以分区叠加放水试验所取得的实际资料为依据,分析了井田大青灰岩水文地质条件及疏水降压可行性;给出了奥灰水与大青水水力联系的具体块段;得出了井田大青灰岩含水层具有块段可疏降性的结论.指出对于局部不可疏降地段应先消除不可疏降的影响因素,才能实施带压开采,从而达到安全采煤的目的.     

利用地下水动力学解析法计算回采工作面涌水量

在综合分析山东兖州兴隆庄煤矿4326综放工作面井下瞬变电磁探测资料、矿井和相邻工作面水文地质资料的基础上,确定了工作面顶板砂岩含水层的水文地质参数,采用地下水动力学解析法计算工作面涌水量.经验证其计算结果与实际基本相符.     

高分辨率三维地震在淮南煤矿采区勘探中的应用

介绍了在地震地质条件较好的情况下,高分辨率三维地震勘探在淮南煤田的应用.成果表明,所得地质资料可靠程度较高.     

燕辽造山带东段中、新生代构造演化的盆地沉积物热年代学记录

盆地碎屑沉积物单颗粒低温磷灰石裂变径迹年龄与高温锆石U-Pb年龄相结合 ,可以更好地示踪盆地沉积物源区构造 -热事件信息及沉积后盆地热演化历史。辽西北票盆地中生代沉积物碎屑锆石U-Pb年龄大部分落入 194.3± 2 .9Ma至 2 3 3 .8± 4.2 Ma范围内 ,大多数碎屑磷灰石颗粒裂变径     

Numerical Modeling of Basin-Range Tectonics Related to Continent-Continent Collision

Continent-continent collision is the most important driving mechanism for the occurrence of various geological processes in the continental lithosphere. How to recognize and determine continent-continent collision,especially its four-dimensional temporal-spatial evolution, is a subject that geological communities have long been concerned about and studied. Continent-continent collision is mainly manifested by strong underthrnsting (subduction) of the underlying block along an intracontinental subduction zone and continuous obduction (thrusting propagation) of the overlying block along the intracontinental subduction zone, the occurrence of a basin-range tectonic framework in a direction perpendicular to the subduction zone and the flexure and disruption of the Moho. On the basis of numerical modeling, the authors discuss in detail the couplings between various amounts and rates of displacement caused by basin subsidence, mountain uplift and Moho updoming and downflexure during obduction (thrusting propagation) and subduction and the migration pattern of basin centers. They are probably indications or criteria for judgment or determination of continent-continent collision.     

武夷山脉主峰黄岗山两种山地草甸土的研究

选取武夷山脉主峰黄岗山典型山地草甸土和黄壤性山地草甸土的代表剖面，研究了土壤形成的条件和特点，推断在气候和植被条件相近的情况下，地形因素的差异引起的水环境的不同，是造成两种土壤理化性质差异的主要原因。     

世界沿海国家对海洋权益的维护和争夺

当今世界，人口数量急剧膨胀，陆地资源日渐减少，环境污染不断加剧，人类陆地生存的空间和条件受到了前所未有的威胁，于是世界各国纷纷把目光投向海洋，世界开始进入一个开发利用海洋的新时期。