Changes

[[file:applying-gravity-in-petroleum-exploration_fig15-9.png|left|thumb|{{figure number|3}}Modified. Copyright: Grow et al. (1988) and Sheridan et al..<ref name=ch15r11>Sheridan, R., E., Grow, J., A., Klitgord, K., D., 1988, Geophysical data, in Sheridan, R., E., Grow, J., A., eds., The Geology of North America, vol. I-2: GSA, p. 177–196.</ref> Gravity model by D.R. Hutchinson and J.A. Grow (1980), courtesy USGS.]]

[[file:applying-gravity-in-petroleum-exploration_fig15-9.png|left|thumb|{{figure number|3}}Modified. Copyright: Grow et al. (1988) and Sheridan et al..<ref name=ch15r11>Sheridan, R., E., Grow, J., A., Klitgord, K., D., 1988, Geophysical data, in Sheridan, R., E., Grow, J., A., eds., The Geology of North America, vol. I-2: GSA, p. 177–196.</ref> Gravity model by D.R. Hutchinson and J.A. Grow (1980), courtesy USGS.]]

Nearby in a similar geologic setting, Chevron made a series of discoveries in the Muglad area using gravity as a primary exploration tool.<ref name=ch15r4>Giedt, N., R., 1990, Unity field, in Beaumont, E., A., Foster, N., H., eds., Treatise of Petroleum Geology Atlas of Oil and Gas Fields: AAPG Structural Traps 3, p. 177–197.</ref> The gravity lows in this map indicate hitherto undiscovered subbasins, identified along gravity profile A–A′ in the bottom panel.

Nearby in a similar geologic setting, Chevron made a series of discoveries in the Muglad area using gravity as a primary exploration tool.<ref name=ch15r4>Giedt, N., R., 1990, [http://archives.datapages.com/data/specpubs/fieldst3/data/a017/a017/0001/0150/0177.htm Unity field--Sudan Muglad rift basin, Upper Nile province], in Beaumont, E., A., Foster, N., H., eds., Structural Traps III: Tectonic Fold and Fault Traps: AAPG Treatise of Petroleum Geology Atlas of Oil and Gas Field 3, p. 177–197.</ref> The gravity lows in this map indicate hitherto undiscovered subbasins, identified along gravity profile A–A′ in the bottom panel.

==Marine gravity from U. S. East coast==

==Marine gravity from U. S. East coast==