摘要
通常利用异常规模或线金属量衬度确定地球化学异常水平分带序列 ,由此得出的序列 ,主要反映不同指示元素异常强度的大小 ,并非是异常中心在空间上的有序排列 ,因此不完全反映元素的相对活动性。应用重心法计算的水平分带序列 ,不仅反映成矿成晕作用下不同指示元素的异常中心相对于矿化中心的空间变化规律 ,而且也能够有效地刻划成矿成晕过程中元素的相对活动性。重心法的数学意义和地球化学意义明确 。
Horizontal zonality sequence of geochemical anomalies is traditionally determined by means of dimensions of anomalies or linear metal quantity contrast. The sequence thus obtained mainly reflectds anomaly intensities of different indicator elements instead of ordered spatial arrangement of anomaly centers, and hence fails to indiccate the complete relative reactivities of elements. The horizontal zonality sequence calculated by the center-of-gravity method can not only reflect spatial variation regularity of different indicator elements realtive to the mineralization center under the ore-forming and halo-forming action, but also indicate effectively relative reactivities of elements in the ore-forming and halo-forming process. The center-of-gravity method has unequivocal mathematic and geochemical implications and also applies to the calculation of ordered arrangement of vertical zones.
出处
《物探与化探》
CAS
CSCD
1997年第3期168-171,共4页
Geophysical and Geochemical Exploration
关键词
地球化学异常
分带序列
重心法
地球化学勘探
geochemial anomaly, horizontal zonality sequence, center-of-gravity method.
