Geophysical Exploration: An Outline of the Principal Methods Used in the Search for Minerals, Oil, Gas and Water Supplies |
Contents
INTRODUCTION | 1 |
RADIOMETRIC METHODS | 3 |
GRAVITY METHODS | 22 |
Copyright | |
3 other sections not shown
Common terms and phrases
acceleration due AEROMAGNETIC SURVEYS aircraft alternating current areas array basement boreholes Bouguer Anomaly calculated contours datum density depth detector diurnal due to gravity Earth's field Earth's magnetic field electrical electrodes electromagnetic energy source Figure flux-gate magnetometer frequency ft/sec gamma geophones Geophysical Service International Geophysicists gravity meter gravity profiles gravity survey ground surveys high-speed formation horizontal igneous IGS photo induced polarization lines logging magnetic profiles magnetic surveying magnetic tape magnetite magnetized rock magnetometer record measured milligal mineral multiple common netic oil and gas orebodies potential electrodes precess proton magnetometer pulse radiometric recording apparatus reflected and refracted refracted waves regional gravity residual gravity maps resistivity rock formations rubidium SALT DOME scintillation counter sedimentary seismic energy seismic record seismic reflection seismic waves shallow shot shot-point signal spaced sparker speeds of seismic structures surface telluric telluric currents terrain correction time-section towed variations velocity vertical component Vibroseis voltage Zeeman sublevels