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.
Where Horses Run Wild. 1  BEAVER COUNTY, Utah â When he was a boy on a 150,000-acre ranch here in the desert mountains, which are so remote that there is no power line and electricity comes from a turbine in a mountain spring, Mark Wintch would thrill at the sight of a rare band of wild horses kicking up dust as they disappeared over a rise.