沽源盆地西湾地区地面伽玛能谱异常特征及控制因素研究

The spectral anomaly characteristics and controlling factors of ground gamma Xiwan area of Guyuan basin

沽源盆地是张家口北部铀钼重要成矿区,近年来在该区发现了较多地面伽玛能谱异常显示,但异常的控制因素各有差异。这里通过对沽源盆地西湾地区地面伽玛能谱测量资料进行数理统计,运用3珡X、珡X+3Sd、珡X+2Sd、珡X+Sd值划分了伽玛能谱异常等级,并详细阐述了异常特征。在此基础上,研究了异常的控制因素,指出研究区内异常主要受北东向断裂构造、潜火山岩体的复合控制,同时与深部含铀火山热液活动密切相关。

The Guyuan basin is an important metallogenic zone in northern Zhangjiakou uranium molybdenum,more ground gamma spectrometry anomalies are found in the area recent years,but the control factors of abnormal variation is not clear.The use of 3X^-,X^-＋3Sd,X^-＋2Sd,X^-＋Sdvalue into the gamma energy spectrum of abnormal class,and elaborates on the anomaly characteristics are adopted through the ground gamma Xiwan area of Guyuan basin spectrum measurement data for mathematical statistics in this paper.Based on the above analysis,we found that the control factors for abnormal,points out that the study area was mainly controlled by the North anomaly east to the composite control faults,submarine volcano rock,but also is closely related with the uranium deep volcano hydrothermal activity.