松辽盆地南部第三系可地浸砂岩型铀矿成矿条件研究   总被引：3，自引：1，他引：3  

张振强  李国宽  桑吉盛  赵忠华  张景训 《铀矿地质》2001,17(3):145-149

松辽盆地第三系可地浸砂岩型铀矿成矿地质条件前人曾从区域上作过分析，从1998年起，该区投入了大量钻探工作，进行1：20万可地浸砂岩型铀矿区调。本文在钻孔编录及剖面编制、样品分析的基础上，从岩性、岩相，岩石化学、有机质、铀含量、岩石孔隙度、砂体分布、层间氧化带发育程度及水动力条件等方面，进一步分析了该区第三系铀成矿条件。  相似文献   

地震CT在寻找隐伏铜镍矿中的应用   总被引：14，自引：0，他引：14       下载免费PDF全文

赵永贵  王超凡  陈燕民  勒洪晓  郭鸿  任汉章  卢建全 《地球物理学报》1996,39(2):272-278

用透射地震ＣＴ方法在金川龙首矿进行了隐伏铜镍矿体的探测试验．试验是在地下５００ｍ的１２８０平面上进行的，覆盖面积３００ｍ×３００ｍ．使用ＥＳ－２４０１Ｘ型４８道高分辨数字地震仪．铜镍矿体为高波速值的超基性侵入岩，采用纵波速度作为层析物理量是敏感的．研究区划分成８１×６４个单元，单元体大小为４ｍ×４ｍ．有效地震射线７６１９条，使用联合迭代重建法（ＳＩＲＴ）求解慢度走时方程．速度图像及地质解释表明测区中西部有一个高波速异常体，推断与含铜镍矿体或花岗体有关；此外还发现一条近东西向的低波速带，推断为断裂．  相似文献   

The　Q　value　variations　in　the　preparing　pro－cess　of　rock　rupture     

王彬  许昭永  赵晋明  胡毅力 《地震学报(英文版)》1996,(4)

ＴｈｅＱｖａｌｕｅｖａｒｉａｔｉｏｎｓｉｎｔｈｅｐｒｅｐａｒｉｎｇｐｒｏ┐ｃｅｓｏｆｒｏｃｋｒｕｐｔｕｒｅＢＩＮＷＡＮＧ１）（王彬），ＺＨＡＯ－ＹＯＮＧＸＵ１）（许昭永），ＪＩＮ－ＭＩＮＧＺＨＡＯ１）（赵晋明）ＹＩ－ＬＩＨＵ２）（胡毅力）１）Ｓｅｉ...  相似文献   

StudyofCurieisothermalsurfaceinSichuanBasinandtheseismicareaonitswesternmar┐gin     

张先  虎喜凤  沈京秀  田长征 《地震学报(英文版)》1996,9(1):109-116

ＳｔｕｄｙｏｆＣｕｒｉｅｉｓｏｔｈｅｒｍａｌｓｕｒｆａｃｅｉｎＳｉｃｈｕａｎＢａｓｉｎａｎｄｔｈｅｓｅｉｓｍｉｃａｒｅａｏｎｉｔｓｗｅｓｔｅｒｎｍａｒ┐ｇｉｎＸＩＡＮＺＨＡＮＧ（张先），ＸＩ－ＦＥＮＧＨＵ（虎喜凤），ＪＩＮＧ－ＸＩＵＳＨＥＮ（沈京秀...  相似文献   

Present　situation　of　the　research　and　application　of　engineering　multiwave　seismic　prospecting　in　China     

吴小平  赵鸿儒 《地震学报(英文版)》1996,9(2):335-343

ＰｒｅｓｅｎｔｓｉｔｕａｔｉｏｎｏｆｔｈｅｒｅｓｅａｒｃｈａｎｄａｐｐｌｉｃａｔｉｏｎｏｆｅｎｇｉｎｅｅｒｉｎｇｍｕｌｔｉｗａｖｅｓｅｉｓｍｉｃｐｒｏｓｐｅｃｔｉｎｇｉｎＣｈｉｎａＸＩＡＯ－ＰＩＮＧＷＵ（吴小平），ＨＯＮＧ－ＲＵＺＨＡＯ（赵鸿儒）（Ｄ...  相似文献   

Observation　and　research　on　ULF　and　VLF　seismo－electromagnetic　radiation     

袁家治  钱书清  赵华兴  任克新 《地震学报(英文版)》1996,9(2):351-355

ＯｂｓｅｒｖａｔｉｏｎａｎｄｒｅｓｅａｒｃｈｏｎＵＬＦａｎｄＶＬＦｓｅｉｓｍｏ－ｅｌｅｃｔｒｏｍａｇｎｅｔｉｃｒａｄｉａｔｉｏｎＪＩＡ－ＺＨＩＹＵＡＮ（袁家治）；ＫｏｚｏＴａｋａｈａｓｈｉ；ＳＨＵ－ＱＩＮＧＱＩＡＮ（钱书清），ＹｏｋｉｏＦｕｊｉｎａｗ...  相似文献   

SEDIMENT MANAGEMENT IN NANQIN RESERVOIR     

CHEN Jingliang The Northwest Institute of Hydraulic Research ZHAO Keyu The Northwest Institute of Hydraulic Research 《国际泥沙研究》1992,(3)

In order to preserve the storage capacity of the Nanqin Reservoir for long-term service, several remedial measures have been worked out: (a) measures to control the upstream extension of backwater deposits and to prevent gravel bed load from entering into the reservoir, so that no armour layer will be formed; (b) sediment sluicing by density current to reduce deposits of suspended load; (c) periodical sediment flushing by emptying reservoir to restore the effective storage capacity. In addition, conceptions of flood plain elevation in reservoir, storage volume required in the routing of turbid flow (density flow), the storage capacity that can be restored after being lost by deposition, and the storage volume for sediment regulation are also discussed.  相似文献   

秦巴山区地质灾害发育规律研究——以镇巴县幅为例     

赵力行  范文  柴小庆  李培  南亚林 《地质与资源》1992,29(2):187-195

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黑龙江老祚山金矿区片麻状花岗岩锆石U-Pb年龄、Hf同位素特征及其地质意义     

寇林林  张朋  陈江  赵岩  王筱筝  毕中伟 《地质与资源》1992,29(3):239-245

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ION EXCHANGE-FLOW INJECTION SPECTROPHOTOMETRIC SIMULTANEOUS DETERMINATION OF TRACES OF BROMIDE AND IODIDE IN SOME CHINESE STANDARD SAMPLES     

Guojun LIU  Jinxin LI  Xiumei ZHAO 《Geostandards and Geoanalytical Research》1995,19(2):215-220

An ion exchange flow injection method is presented for the simultaneous determination of bromide and iodide based on the catalytic reaction during the oxidation of Pyrocatechol Violet by hydrogen peroxide in strongly acid solution. Bromide and iodide in sample solutions are concentrated when they flow through the ion exchange column; they are removed and separated with sodium nitrate eluant flowing through the column, and are monitored spectrophotometrically at 555 nm. All possible anionic interferences were studied. The procedure has been applied successfully to the determination of bromide and iodide in some Chinese standard reference samples. The limits of detection are 0.2 ppm and 0.4 ppm of bromide and iodide respectively in soils and stream sediments.  相似文献