摘要
针对浅覆盖区地质调查困难,缺少可对比已知资料的实际问题,这里以大兴安岭阿龙山地区1:250000水系沉积物资料为例,给出了浅覆盖区岩性和构造识别的一种方法。该方法依据水系沉积物对原岩的继承性,以不同岩性所对应的典型土壤为已知样品,采用欧氏距离作为分类指标,将研究区划分为不同的岩性类。得到的区域地球化学分类图反映了一定的岩性分布及构造特点,为区域地质调查提供了线索。
In order to overcome the difficulties of geologic survey and the lack of data in the shallow overlay area, a method to identify the lithologic characters and structures in the shallow overlay area is put forward in this paper, which takes the data processing of 1:250 000 stream sediment in Alongshan, Greater Xing'an Mountains as an example. The method, based on that stream sediment inherits the characters of the rock, divides the studied area into different lithologic areas, in which the typical soils formed from different rock are used as the known samples and the Euclidean distances are used as the classification index. The geochemical classification map obtained by this method reflects the characters of lithologic distribution and structure, which can provide the thread of the regional geologic survey in such area.
出处
《物探化探计算技术》
CAS
CSCD
2004年第3期243-246,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
中国地质调查局项目(20002010002106
200320120005)
关键词
水系沉积物
地球化学
欧氏距离
典型土壤
stream sediment
Euclidean distance
geochemical classification
typical soil
