Introduction to Geophysical Prospecting |
Contents
Preface | 1 |
Seismic Wave Propagation | 16 |
Earthquakes and the Structure of the Earth | 31 |
Copyright | |
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aeromagnetic survey airborne angle anomaly average axis basement body Bouguer buried computed contours correction curvature cylinder density depth detector determined distance drilling earth earth's field earthquakes effect electrical electrodes electromagnetic elevation equipotential Exploration Geophysicists Figure formations frequency gammas geologic geophone Geophysical Prospecting Geophysicists gradient gravimeter Gulf horizontal illustrated instrument intensity intercept interface interpretation interval layer lines logs longitudinal wave Lovell Lake magnetic field magnetite magnetometer mass measured method miles milligal minerals Mining observed gravity obtained operations pendulum perpendicular petroleum plane plotted polarization pole position potential radioactive record reef reflection refraction resistivity rocks salt dome scintillation counter sea level sedimentary seismic waves seismograph shooting shot hole shot point shown in Fig shows Society of Exploration speed station structure subsurface surface survey techniques telluric current time-distance curve tion torsion balance transverse waves V₁ variation velocity vertical zone