The most common type of structural trap is formed by an anticline, a structure with a concave (as viewed from below) roof caused by the local deformation of the reservoir rock and the impermeable cap rock. In this case, the intersection of the oil-water contact with the cap rock determines the edges of the reservoir.
Wild Gerbils. Gerbils are small rodents but they are not rats! They normally have white bellies and are agouti coloured. They live in the wild in Central Asia, India, the Middle East, and Africa. They roam the savanna, steppe, hot desert and semi-desert areas of these nations.
Tracy Arm-Fords Terror Wilderness. The United States Congress designated the Tracy Arm-Fords Terror Wilderness (map) in 1980 and it now has a total of 648,930 acres. All of this wilderness is located in Alaska and is managed by the Forest Service.ounded by Canada on the east, this Wilderness is highlighted by two sheer-walled fjords, Tracy Arm and Endicott Arm, both narrow and deep and over 30 miles long. At the head of both fjords tidewater glaciers calve regularly into the sea, making a boat approach to their faces dangerous.