DENSITY DETERMINATIONS BY UNDERGROUND GRAVITY MEASUREMENTS

Publisher Website
Google Scholar
Abstract
Gravimeter observations, in a vertical shaft, 2,247 feet deep, of the Pittsburgh Plate Glass Company’s limestone mine at Barberton, Ohio, for the purpose of determining the densities of the subsurface rock strata, are reported. The survey was made with a standard‐type gravimeter to simulate the data which would be obtained by a borehole gravimeter to aid in the anticipation and formulation of problems in the development and application of a borehole gravimeter for gravity prospecting. Density measurements on many selected core drill rock samples are compared with the densities determined from the gravimeter data. The individual sample measurements show large scatter and systematically low values. Attempts to restore the samples to initial conditions underground were unsuccessful. It appears that density determinations of finite intervals of underground rock strata can be done better with the gravimeter than by laboratory measurements of rock samples.

This publication has 0 references indexed in Scilit: