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.
She adds that these gerbils are quite friendly and will remain so with gentle daily handling and they should be fed gerbil food. PEOPLE: Me and My Pet The 26-mile race through grim Black Country streets will be tough, but I'll be spurred on by the thought that my efforts will bring in a shedload of charity cash for the Shropshire Crippled Gerbil Trust.