Geographical Setting and Islands
- It now comprises an archipelago of thirty-two natural islands (after the return of Jenan to Qatar on March 2001).
Around most of Bahrain is a relatively shallow inlet of the Persian Gulf known as the Gulf of Bahrain. The seabed adjacent to Bahrain is rocky and, mainly off the northern part of the island, covered by extensive coral reefs. Most of the island is low-lying and barren desert. Outcroppings of limestone form low rolling hills, stubby cliffs, and shallow ravines. The limestone is covered by various densities of saline sand, capable of supporting only the hardiest desert vegetation – chiefly thorn trees and scrub. There is a fertile strip five kilometers wide along the northern coast on which date, almond, fig, and pomegranate trees grow. The interior contains an escarpment that rises to 134 meters, the highest point on the island, to form Jabal ad Dukhan (Mountain of Smoke), named for the mists that often wreathe the summit. Most of the country's oil wells are situated in the vicinity of Jabal ad Dukhan.
One author writes about the geology of the nation: "Bahrein lies on a portion of the ancient Tethys Ocean geosynclinal belt represented today by the Arabian Gulf. The formation of the principal island is the result of pressure from the mountain masses of Persia against the crystalline platform of central Asia, the thrust being absorbed by gentle folding in the geosynclines. The structure of Bahrein is that of a large, single, closed dome covering the entire faulting. Rocks exposed at the surface consist of: 1) Recent sands and coquinas forming flat, raised beaches surrounding the island from which the surface rises gradually to an elevation 150 to 200 feet above sea level. At this point it breaks away into inward-facing cliffs eighty to one hundred feet high completely surrounding an oval central depression about twelve miles long and four wide. 2) Pleistocene sands, cross bedded and probably wind deposited, lying in the canyon. 3) Miocene silicious clay covering a very limited area. 4) Eocene limestone covering most of the island, the central region of which, known as “Jabal Dukhār “Mountain of Smoke”, rises to a point 439 feet above sea level. The limestone is very porous and is the source of most of the water in the northern half of the island."
Read more about this topic: Geography Of Bahrain
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