Vertical gravity gradient surveys: field results and interpretations in British Columbia, Canada
Journal Article
·
· Geophysics; (United States)
Two vertical gravity gradient (VGG) surveys were completed during 1977 in British Columbia. The VGG method utilizes a La Coste and Rouberg model D gravity meter in conjunction with a small gradient tripod. The work indicates that the 'free-air' effect ranges between 2600-2800 E for southwestern British Columbia, which is somewhat lower than the theoretical value of 3086 E. The usefulness of the method in mining exploration is doubtful, especially in hilly or mountainous terrain where VGG values are shown to be very terrain-sensitive. However, the importance of knowing the regional VGG variations is emphasized by the work over the Hat Creek coal deposit, B.C.
- OSTI ID:
- 7073598
- Journal Information:
- Geophysics; (United States), Vol. 47:6
- Country of Publication:
- United States
- Language:
- English
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