潮水盆地孢粉组合特征,时代及对比

对潮水盆地侏罗系陆相含煤地层由下而上建立了五个孢粉组合带,在组合三建立了两个亚组织。①Ｃｙａｔｈｉｄｉｔｅｓ－Ｃｈａｓｍａｔｏｓｐｏｒｉｔｅｓ－Ｄｉｓａｃｉｔｅｓ组合（Ｊ１＾１）。②Ｃｙａｔｈｉｄｉｔｅｓ－ｃｈａｓｍａｔｏｓｐｏｒｉｔｅｓ－ｃｙｃａｄｏｐｉｔｅｓ组合（Ｊ３＾１）。③Ｃｙａｔｈｉｄｉｔｅｓｍｉｎｏｒ－Ｃｙｃａｄｏｐｉｔｅｓ ｔｙｐｉｃｕｓ组合（Ｊ１＾２）;上部：Ｃｙｃａｄｏｐｉｔｅｓ     

宣东二号井田辉绿岩床特征及其对煤质的影响

宣东二号井田以９线为界，东区辉绿岩体厚２００余ｍ，顺层侵入Ⅱ与Ⅲ煤组之间；西区厚度０．２～几米，呈小型岩床或岩脉产出在非煤系之中。辉绿岩体的存在，造成本区地热异常，提高了煤的变质程度，同时对煤质有很大的影响。对Ⅲ＿３煤层的影响强于其下部的Ⅴ＿２煤层。文中说明了煤类分布与变质程度不一致的原因。     

石门雄黄矿区二号窿深部找矿研究

二号窿是石门雄黄矿区曾开采过的老癃。矿体主要在１６５ｍ,１４０ｍ,１２５ｍ三个标高段富集,从上至下呈现浸染状矿石－角砾状矿石的变化规律,矿石主要化学成分为Ａｓ,Ｓ,ＳｉＯ２,ＣａＯ,Ａｌ２Ｏ３,Ｆｅ２Ｏ３等,矿体元素的垂直分带明显,Ｂａ,Ｈｇ在矿体上部富集,而Ｓｂ在矿体下部含量高。     

鹤岗矿区煤层气资源评估与开发前景预测

鹤岗矿区面积２５２ｋｍ＾２，有效井田面积为１００．２１ｋｍ＾２，含煤地层厚８００～１０００ｍ，共含煤４０层，含煤系数为４．３～９．３％，大于３．５ｍ的煤层占７５％，中厚煤层占１９．２％，其中可采煤层和局部可采煤层计３６层，总厚度为３８．６～８５．８ｍ，赋存深度均在１２００ｍ以内，煤炭资源量２５６５Ｍｔ，资源量密度为１０．１８Ｍｔ／ｋｍ＾２，煤层瓦斯含量为９．４～１５．５ｍ＾２／ｔ，平均为１３ｍ＾３     

Tectonomagmatic Metallogenic System of Dexing Ore Field, Jiangxi, China

ＴｈｅｂｅｌｔｏｆＴｏｎｇｃｈａｎｇ－ＹｉｎｓｈａｎｉｎＤｅｘｉｎｇｄｉｓｔｒｉｃｔ,２０ｋｍｌｏｎｇａｎｄ１２ｋｍｗｉｄｅ,ｉｓｌｏｃａｔｅｄｉｎｔｈｅｎｏｒｔｈｅａｓｔｅｒｎｐａｒｔｏｆＪｉａｎｇｘｉ,ｉｎｗｈｉｃｈ３ｌａｒｇｅｏｒｅｆｉｅｌｄｓ...     

中国部分煤储层解吸特性及甲烷采收率

根据常压下的解吸实验和煤层气参数井实测数据分析,我国煤的解吸特笥变化较大,解吸率主要受煤层埋深及煤级的影响。最侍解吸深度一般在４００～６００ｍ之间,镜质体反射率小于３％时,随煤级的升高而增大;大于３％时,则相反。我国煤储层的吸附时间长短琚煤级没有特定关系,但在某些地区工层的含气量高低有关,甲烷含量低则吸附时间长,尤其是小于８ｍ＾３／ｔ时急剧增长。从现有资料看,我国煤储层的吸附时间一般不超达９ｄ。煤     

地质雷达探测顶管障碍物的应用实例

采用地质雷达技术,快速准确地查明了５ｋｍ长的排污管顶推线范围内（宽３ｍ、深３～８ｍ）２９６处地下障碍物。探测工作沿３条相互平行、相距１ｍ测线进行（剖面法）。测量参数为：天线中心频率５０ＭＨz、天线距２ｍ、时窗３００ｎｓ、测点距０．５ｍ、采样间隔８００ｐｓ、叠加次数１２８次,地质雷达图像的解释是在了解了各种干扰图像的目的图像的基础上进行的。     

长白山天池火山造伊格尼姆岩喷发及气候效应

长白山天池火山属新生代多成因中央式火山。火山喷发活动经历了早更新世造盾喷发、中－晚更新世造锥喷发和近代造伊格尼姆岩喷发三个阶段。造伊格尼姆岩喷发时布里尼喷发柱高度曾达２５ｋｍ，伞状云顶部高度达３５ｋｍ。初始喷发温度为７８０℃，喷发速度３００ｍｓ－１。岩浆质量喷发率为１０８．３６ｋｇｓ－１，释放能量１．３４３６×１０１９Ｊ。喷发持续时间为四天半到十四天之间。高速流动的伊格尼姆岩最大流速１７０ｍｓ－１，流体前锋定位时仍保持了５０ｍｓ－１的运动速度。天池火山１２１５±１５Ａ．Ｄ．喷发物释放出了５×１０１０ｋｇ卤素元素和２×１０１０ｋｇ的Ｓ。喷发后导致了强烈的持续７年左右的“火山冬天效应”。在欧亚大陆中部地区最大降温幅度超过２．２５℃。     

山东潍河"99·8"特大暴雨洪水分析

１９９年８月９～１３日,山东省潍河流域发生了该省有降雨观测记载以来罕见的特大暴雨洪水（以下简称“９９．８”暴雨中心三里庄水库雨量达７１１．４ｍｍ,最大２４小时雨量达５９９．６ｍｍ。致使三里庄水库上游山洪暴发,水位暴涨,入库洪峰达３０１０ｍ＾３／ｓ,洪水总量达８５３０万ｍ＾３,最大泄量７００ｍ＾３／ｓ。对这次暴雨洪水的特性进行了分析。     

华东部分铀矿区内大气和饮用水体放射性水平调查研究

通过对华东地区２１ 个铀矿区内居民居住环境大气中氡及其子体α潜能浓度的调查,结果表明：居民居室外氡浓度均值范围为６．７３—１３２．９ Ｂｑ／ｍ ３,氡子体α潜能浓度均值范围为１１．０—７８．８ｎＪ／ｍ ３。居室内的平均氡浓度均值范围为１４．５—１８５．８ Ｂｑ／ｍ ３,氡子体α潜能浓度均值范围为１３．８—１０４．２ ｎＪ／ｍ ３;对居民饮用水源的取样分析表明,铀浓度均值范围为０．１２—１．６８ μｇ／Ｌ,钍浓度均值范围为０．０２—０．４２ μｇ／Ｌ,镭－２２６ 浓度均值范围为０．９０—１２．１ ｍ Ｂｑ／Ｌ,与全国和当地的放射性天然本底水平比较接近,均属正常本底水平。     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)     

HISTORICAL GEOLOGY & STRATIGRAPHY

正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin