The Barnett Shale is a natural gas source bed rock that stretches over 16 to 21 North
Texas counties and is still actively being discovered. Its 6,000 + square-mile reservoir
is already the second largest producing on-shore domestic natural gas field in the United
States after the San Juan Basin in New Mexico and Colorado.
lastUpdated: Thu, 17 May 2012 13:36:17 CDT
The Marcellus Shale, also referred to as the Marcellus Formation, is a Middle
Devonian-age black, low density, carbonaceous (organic rich) shale that occurs in the
subsurface beneath much of Ohio, West Virginia, Pennsylvania and New York. Small areas of
Maryland, Kentucky, Tennessee, and Virginia are also underlain by the Marcellus Shale.
lastUpdated: Thu, 17 May 2012 10:39:00 CDT
The Haynesville Shale is a large "natural gas" deposit in northwest Louisiana. The
Haynesville Shale is being described as one of the richest fields of natural gas ever
discovered in this region. Most experts and those connected to the industry agree it's
too early to say for sure if the discovery will transform the landscape and economy of
parishes that sit atop it.
lastUpdated: Thu, 17 May 2012 02:12:34 CDT
The Bakken Shale, is a rock unit from the Late Devonian to Early Mississippian age
occupying a substantial part of the subsurface of the Williston Basin, in Montana, North
Dakota, and Saskatchewan.
lastUpdated: Wed, 16 May 2012 23:04:21 CDT
The Williston Basin is a large intracratonic sedimentary basin in eastern Montana,
western North and South Dakota, and southern Saskatchewan known for its rich deposits of
petroleum and potash. The basin is a geologic structural basin but not a topographic
depression; it is transected by the Missouri River. The oval-shaped depression extends
approximately 475 miles (764 km) north-south and 300 miles (480 km) east-west.
lastUpdated: Tue, 15 May 2012 08:35:00 CDT
The Bossier shale is on the western flank of the East Texas basin. Bossier wells
generally produce dry gas from overpressured sands contained within the Bossier shale.
Productive sands are found at depths from 12,000 to 15,000 ft and generally occur in the
upper 500 to 600 ft of the Bossier shale.
lastUpdated: Tue, 01 May 2012 02:03:26 CDT
