. Bulletin - United States National Museum. Science. 6 NATIONAL MUSEUM BULLETIN 2 75 Physical Description of Libya General Features Libya is divisible into several rather broad physiographic elements. These include the coastal plain adjacent to the Mediterranean Sea, the coastal escarpment delineating the inland margin of the coastal plain, the broad zone of sand and gravel plains of the pre-Saharan region south of the coastal escarpment, and the hamadas, serirs, and sand seas of the Saharan interior. In many areas, isolated mountain com- plexes, escarpments, and local rocky outcroppings
. Bulletin - United States National Museum. Science. 6 NATIONAL MUSEUM BULLETIN 2 75 Physical Description of Libya General Features Libya is divisible into several rather broad physiographic elements. These include the coastal plain adjacent to the Mediterranean Sea, the coastal escarpment delineating the inland margin of the coastal plain, the broad zone of sand and gravel plains of the pre-Saharan region south of the coastal escarpment, and the hamadas, serirs, and sand seas of the Saharan interior. In many areas, isolated mountain com- plexes, escarpments, and local rocky outcroppings are widespread and form a large part of the desert landscape. In other areas, near the coast and in the interior, large, dry watercourses (wadis) dissect the otherwise featureless plains. These wadis are a typical feature of the Libyan Sahara and, in many areas, provide the only visible contrast in an otherwise monotonous landscape. In northern Cyrenaica, the deep canyons and high tablelands of the Cyrenaican Plateau, and in Tripolitania, the high valleys and rocky headlands of the Gebel Nefusa form physiographic features differing markedly from the low- lying surrounding Figure 1.—Physical features of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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