|Location||Rocky Mountains, straddles Colorado-Utah border.
|Formation Details||Mancos shale, the second largest producer of shale?deposited natural gas with depths in some wells of more than 13,000 feet, this shale peaked in the first quarter of 2003 at 44.8 MMcf/d of natural gas. By the second quarter of 2008, production from this shale averaged 32 MMcf/d. The shale deposited during the western Cretaceous Seaway provided the source for the major shale plays in the Rockies.|
|Notes||Mancos Shale Play split between oil and gas Northern part of the SJB is gas prone while the southern part of the basin is oil prone Gas play is uneconomic at current gas prices.|