Gravity is an effective tool in the study of the complex Arkansas Ouachita Trend Belt.

There is a major density contrast between the Arkansas Novaculite and the overlying Stanley Shale.

Anticlines in the novaculite, like that at the Isom Springs Field in Marshall County, Oklahoma, cause strong maximum gravity anomalies.

Another strong density contrast is between the Arbuckle formation and the overlying flysch deposits. Large suspected carbonate buildups in the Arbuckle into the flysch sediments would cause prominent maximum gravity anomalies.

Large reefs are expected along a broad carbonate trend projected from Texas to cross the gravity survey.

In addition, there are many intrusives evident from the gravity.

 

Specifications:

The plat shows the number of stations by 30 minute quadrangles.

Bouguer Gravity Maps and a digital tape are available.

Residual gravity data are available for the quadrangles.