论文部分内容阅读
我们在北美、澳大利亚和非洲沙漠地区做了大量的化探工作(包括实验与应用).希望从这项工作中得出的一些结论,能对中国某些较干旱地区的化探工作有所帮助. 在沙漠地区的找矿勘探问题有三个,即:普查以前未经勘查过的地区;识别淋滤矿石露头;寻找冲积层或其它搬运沉积覆盖层下的矿体. 一、普查1.具有蚀变或褐铁矿色斑特征的大片图象可能在航空照片或卫星照片上出现.在完全没有勘探过的地区,研究判读航空摄影与卫星照片是十分有用的(Schmidt).
We have done a lot of geochemical exploration (including experiments and applications) in North America, Australia and the deserts of Africa and hopefully, some conclusions drawn from this work will be helpful to the geochemical exploration in some of the more arid regions of China. There are three prospecting problems in the desert, namely: areas that have not been surveyed before the census; identifying outcrops of leaching ore; looking for alluvial or other ore bodies that carry sediments under the overburden. Large images of the altered or limonite mottled features may appear on aerial photographs or satellite photographs, and it is useful to study aerial photography and satellite photography in completely unexplored areas (Schmidt).