21.   Western Atlas specializes in using seismic data to map geological formations that contain oil and natural gas reserves.

22.   With the Petrobank, data can be manipulated into three-dimensional visuals, showing salt domes, rock and other geological formations.

23.   Experts had long suspected that diamond-bearing geological formations in neighboring Russia and Finland extended into the Norwegian arctic, but had been unable to find diamonds.

24.   The worldwide geological formation marking the Cretaceous-Tertiary boundary is enriched with iridium, a chemical from outer space.

25.   But oil reserves have proved to be about half what was initially believed from analysis of the very complex geological formations off the coast of Vietnam.

26.   The field is in the same geological formation as the Dai Hung field, and next to the Blue Dragon block acquired by Mobil.