• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nonlinear processes in geophysics >Identification of uranium targets based on airborne radiometric data analysis by using multifractal modeling, Tark and Avanligh 1:50 000 sheets, NW Iran
【24h】

Identification of uranium targets based on airborne radiometric data analysis by using multifractal modeling, Tark and Avanligh 1:50 000 sheets, NW Iran

机译：使用多重分形模型，基于机载辐射数据分析，确定铀目标，Tark和Avanligh 1：50000张，伊朗西北

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Airborne geophysical anomaly separation using conventional statistics and the fractal/multifractal concentration-area (C-A) method has been applied to the Tark and Avanligh 1:50 000 sheets in NW Iran. The geophysical survey that resulted in the airborne geophysical data was conducted for uranium exploration in both areas. Selected anomalies were further investigated by using surface radiometric data. Firstly, threshold values to define anomalies were determined and compared by means of conventional statistical methods. Several relatively large anomalies were identified with uranium (U) equal to 1.7 eppm and 1.9 eppm in the Tark and Avanligh areas, respectively; locally these U anomalies have magnitudes exceeding 3.5 eppm in both areas. Log-log plots obtained for the C-A method indicate existence of two separate stages of U enrichment, with a major event being the cause of U concentration values above 6.1 and 3.4 eppm in the Tark and Avanligh areas, respectively. These higher intensity anomalies are located in the northwestern part of the Tark and in the southern part of the Avanligh sheets. In both areas, the C-A anomalies were further investigated using ground radiometric data and XRF analysis revealing higher than 150 and 280 ppm U concentration values in the two areas, respectively. Correlation between the anomalies and geological units show that the anomalies are associated with limestone and sandstone units.
机译：使用常规统计数据和分形/多重分形集中区（C-A）方法对机载地球物理异常进行分离的方法已应用于伊朗西北部的Tark和Avanligh 1:50 000页。进行了航空物探数据的地球物理调查是在两个地区进行的铀勘探。通过使用表面辐射数据进一步研究了选定的异常。首先，通过常规统计方法确定并比较定义异常的阈值。在塔克地区和阿凡里格地区，分别发现了几个相对较大的铀异常，分别等于1.7 eppm和1.9 eppm;在这两个地区，这些U异常的局部幅度都超过3.5 eppm。通过C-A方法获得的对数对数图表明存在两个单独的U富集阶段，一个主要事件是分别在Tark和Avanligh地区造成U浓度值分别高于6.1和3.4 eppm的原因。这些更高强度的异常位于塔克的西北部和阿凡里奇片的南部。在这两个区域，使用地面辐射数据和XRF分析进一步研究了C-A异常，发现这两个区域的U浓度分别高于150和280 ppm。异常与地质单位之间的相关性表明，异常与石灰岩和砂岩单位有关。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号