
EnvironmentOctober 1, 1941
Whence Came Oil?
Most Geologists Now Hold that Petroleum Was Derived from Plants and Animals

Whence Came Oil?
Most Geologists Now Hold that Petroleum Was Derived from Plants and Animals

Bird Dogs of the Oil Field
Gamma Rays Often Point to the Presence of Oil in Old Worked-Out Wells

Our Next Source of Oil
Petroleum Geologists are Turning from the Structural Trap to the Stratigraphic Trap