Here are some additional resources outside the IGC website. Please contact us with suggestions for other useful sites we might add. -email-

Society of Exploration Geophysicists
Canadian Society of Exploration Geophysicists
American Association of Petroleum Geologists (AAPG)
European Association of Geoscientists & Engineers
Geological Society of America
International Association of Geophysical Contractors (IAGC)

Gravity and magnetic methods
Real-time monitoring of the Earth’s magnetic field
Dr. R. Keller – Getting Started: Using/Understanding Gravity Data
Sandwell and Smith – Satellite derived marine gravity
The principles and limitations of geophysical exploration methods
USGS – Introduction to Potential Fields: Gravity
USGS – Introduction to Potential Fields: Magnetics
USGS – Map Projections

Bureau of Economic Geology, Carbon-dioxide Sequestration
State Geologic Maps, From University of Wisconsin
National Geologic Map Database, State-Wide Geologic Maps
Satellite derived marine gravity and topography
USGS –Printing of Maps and Reports, Maps on Demand
USGS – Mineral Resources Spatial Data, Interactive maps