Borehole log analysis using an interactive computer

The vast quantity of geological and geophysical log data available from boreholes in current prospect development operations requires a computer based storage, retrieval, reproduction and interpretation facility. lnteractive computing techniques maximise the ability of a geologist or geophysicist to locate essential features and to produce an interpreted log emphasising features of geotechnical or economic importance, which may then be input to a data bank for mine planning studies. Examples from coal and manganese prospects show how correlation techniques implemented on the computer facilitate estimation of lithological and geotechnical parameters from geophysical logs, complementing rather than overriding the interpreter’s judgement.