David R. Jefferis¹
Reservoir Visualization Applications
Plains Resources, Inc.

Michael S. Connelly
Connelly Exploration, Inc.
Denver, Colorado, U.S.A.

Skip Pack
Dynamic Graphics, Inc.
Alameda, California, U.S.A.

ABSTRACT

The Gap Mountain prospect is located in the southern end of the White River Valley, Nevada. Approximately 60 km to the northwest, in Railroad Valley, lies the Grant Canyon field, which has produced nearly half of the oil extracted from Nevada fields to date. The Gap Mountain area is considered prospective for exploration of hydrocarbons, in that several structures have been identified from geologic mapping and through the analysis of gravity and magnetic data. The geology of this play is defined by Mesozoic compressional thrusting that has juxtaposed Mississippian source rock and Devonian reservoir rock. Structure is further complicated by Basin and Range extension and the generation of listric normal faults. Tertiary volcanic rocks in the area are also considered to be possible reservoirs.