Please wait a minute...
E-mail Alert Rss
 
物探与化探  1995, Vol. 19 Issue (2): 88-95    
  论文 本期目录 | 过刊浏览 | 高级检索 |
超低密度河漫滩沉积物地球化学采样的代表性
沈夏初, 谢学锦, 鄢明才, 顾铁新, 迟清华
地矿部物化探研究所, 廊坊 102899
THE REPRESENTATIVENESS OF WIDE-SPACED OVERBANK SEDIMENT GEOCHEMICAL SAMPLING
Shen Xiachu, Xie Xuejing, Yan Mingcai, Gu Tiexin, Chi Qinhua
Institute of Geophytsical and Geochemical Exploration, Langfang 102849
全文: PDF(527 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 

为了响应国际地球化学旗图计划(ICCP259)中的全球地球化学采样子计划的实施,研制超低密度地球化学采样的最佳方法,1989~1990年在江西省开展了一项试点研究.在约15.7万平方公里的可采面积内采集了121件河漫滩沉积物样品.平均采样密度约为五个点/1300km2.采样覆盖度为24%.采样点主要布置在100-500km2的汇水盆地口上,其中有33个采样点控制的汇水盆地面积在400~2000km2之间.河漫滩沉积物样品来自深度在0.5m以下到1.2m的柱状剖面.样品定量分析了38种元素.文章从多方面讨论了超低密度河漫滩沉积物地球化学术样的代表性,并得出以下主要结论:1.在400-2000km2的汇水盆地口上采集河漫滩沉积物样品能较好地反映上游汇水盆地中的主要矿化.2.超低密度采样和以2个点/km2采集水系沉积物样品所获得的W、Sn、Cu、Pb和Zn五个元素的地球化学趋势相似.3.超低密度样品中W、Ph、Be、Rb等元素的分布特征与省内花岗岩的分布相吻合.4.超低密来样品中“3Ni+Cr+V”的分布能较好地反映扬子准地台与华南加里东精皱系在省内的分界线.

服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
罗文歆
朱自强
赵晓博
关键词 层析成像改进模型残差权重    
Abstract

In response to the performance of the Global Goochomical Sampling (a subproject of the IGCP Project 259, International Geochemical Mapping), an orientation study was conducted in 1989-1990 to develop an optimum wide-spaced geoehemical sampling approach in Jiangxi Province, Southsart China. 121 overbank sediment samples were collected in an area of about 157,000 km2, with the average sampling density being 1 sample/1,300 km2, and the sampling coverage being 24%. Most of the samples were collected at outflow sites of the drainage basins with an area of 100-500 km2, including 33 samples that control basins of 400-2,000 km2.Overbank sediment samples were taken at a dspth of 50-120 cm, and the samples were analyzed quantitatively for 38 elements. The representativeness of wide-spaced overbot sediment sampling is discussed from vinous angles in the paper, with tho following conclusions reached:-Sampling at the outflow areas of 400-2,000 km2 drainage basins can reveal the major minoralizations in the basins;-W, Sn, Cu. Pb and Zn in both wide-spaced samples and drainage sediment samples collected at a density of a samples/km2 manifest similar regional geochemical trends;-Distribution of W, Pb, Be and Rb coincides with the Yanshanian graftes closely related to the major ore-forming plocesses in Jiangxi;-Distribution of "3Ni +Cr + V" in wide-spaced samples can distinctly reveal the boundary between the Yangtze paraplatform and the Caledonian fold symbol in Jiangxi.

Key wordscomputerized tomography    improved model    residual error    weight
收稿日期: 1994-01-19      出版日期: 1995-04-24
引用本文:   
沈夏初, 谢学锦, 鄢明才, 顾铁新, 迟清华. 超低密度河漫滩沉积物地球化学采样的代表性[J]. 物探与化探, 1995, 19(2): 88-95.
Shen Xiachu, Xie Xuejing, Yan Mingcai, Gu Tiexin, Chi Qinhua. THE REPRESENTATIVENESS OF WIDE-SPACED OVERBANK SEDIMENT GEOCHEMICAL SAMPLING. Geophysical and Geochemical Exploration, 1995, 19(2): 88-95.
链接本文:  
http://www.wutanyuhuatan.com/CN/      或      http://www.wutanyuhuatan.com/CN/Y1995/V19/I2/88

[1] 江西省地矿局,江西省区城地质志,地质出版社,1984.
[2] 江西省物化探大队,江西省区域地球物理·地球化学场的基本特征-1:50万物化探图件说明书,1985.
[3] Bogen, J., BoIviken, B. and Ottesen, R. T., EnvironmentaI studies in Western Europe using overbank sediment. In: Erosion and Sediment Transport Monitoring Programme in River Basins (Proceeding of the Oslo Symposium, August, 1992).IAHS Publ. no. 210. pp. 317-325.1992.
[4] Darnley, A. G., International reochcmical mapping: a new global project. In: A. G. Darnle) and R .G. Garrett Editors),International Gedchemical Mappins. J. Geochem. Explor., 39: 1-13, 1990.
[5] Ottesen, R. T., Boaeo, J., Bolviken, B. and Volden, T., Oierbank sedimcnt,a representative sample medium for regional geochemieal mapping. J. Geochem. Explor., 32: 257-277, 1989.
[6] Plant, J. A., Hale, M. and Ridgway, L, Developments in regional geochemistry for minesal ezplora-lion.Trans. Inst. Min. Metall., Sect. B. Appl. earth sci., B110-B140,1988.
[7] Plant, J. A., Breward,N.,Simpson, P. R·and Slater, D., Regional geochemistry and the identifica-lion of metallogenic pro}inces;examples from lead-zinc-barium, tin-uranium and gold deposits. In:A. G. Darnley and R. G. Garrett (Editors),International Geochemieal Mapping. J. Geochem. Ezplor.,39:195-224, 1990.
[8] Xie Xuejing, Some problems, strategical and tactical, in international geochemical mapping. In:A. G.Darnlcy and R. G.Garrett (Editors), International Geochemieal Mapping. J. Geochem. Explor., 39:15-33,1990.
[9] Xie Xuejing and Yin Binchuan, Geochemical patterns from local to global. In: F. W. Dickson and L. C. Hsu (Editors), Geochemical Exploration 1991. J. Geochem. Ezplor., 97:109-129, 1993.

[1] 马董伟. 地震勘探方法在薄覆盖层区城市活断裂探测中的应用[J]. 物探与化探, 2019, 43(5): 1038-1045.
[2] 倪建福,刘四新. 跨孔电波衰减成像初始振幅估算方法比较[J]. 物探与化探, 2019, 43(3): 634-641.
[3] 薛花, 杜民, 文鹏飞, 张宝金, 张如伟. 网格层析速度反演方法在准三维西沙水合物中的应用[J]. 物探与化探, 2017, 41(5): 846-851.
[4] 孔旭, 密文天, 莫雄, 谢敏涛, 蒋国林, 符长亮. 基于MRAS证据权重法的湖南怀化地区金矿成矿预测[J]. 物探与化探, 2016, 40(3): 467-474.
[5] 张倩, 王玲, 江沸菠. 电阻率层析成像的二维改进粒子群优化算法反演[J]. 物探与化探, 2015, 39(5): 1047-1052.
[6] 张恩, 李名松, 汪冰, 牛海威, 卢辉雄, 李存金. 基于GIS的证据权重法在小兴安岭北段金成矿预测中的应用[J]. 物探与化探, 2015, 39(4): 756-761.
[7] 马逸麟, 谢长瑜, 胡晨琳, 刘铁山. 江西省吉泰盆地土地质量评价[J]. 物探与化探, 2015, 39(2): 387-395.
[8] 蒋忠祥, 徐敏山, 姚卫星. 基于数值分析的仪器系统差校正[J]. 物探与化探, 2013, 37(2): 287-290.
[9] 刘文辉. 甘肃省张掖—永昌地区土地质量评估[J]. 物探与化探, 2013, 37(1): 132-137.
[10] 陈宗刚, 李平宏, 张建成, 林孝城, 薛有平. 声波层析成像在特大涌水地质区域探测中的应用[J]. 物探与化探, 2013, 37(1): 180-185.
[11] 曹云勇. 地震CT技术在龙排冲隧道煤窑采空区勘探中的应用[J]. 物探与化探, 2012, 36(S1): 161-163.
[12] 罗文歆, 朱自强, 赵晓博. 改进模型的层析成像算法[J]. 物探与化探, 2012, 36(4): 674-677.
[13] 冯彦谦, 赵广茂, 孟宪波. 井间地震层析成像技术的应用[J]. 物探与化探, 2011, 35(3): 345-348.
[14] 郑洪伟, 李廷栋, 高锐. 青藏高原地震层析成像的研究进展[J]. 物探与化探, 2011, 35(2): 160-164.
[15] 瞿辰, 杨文采, 于常青. 高分辨率过井地震层析成像的级联算法及其应用[J]. 物探与化探, 2010, 34(6): 814-820.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备05055290号-3
版权所有 © 2017《物探与化探》编辑部
通讯地址:北京市学院路29号航遥中心 邮编:100083
电话:010-62060192;62060193 E-mail:whtbjb@sina.com