. Bulletin of the British Museum (Natural History). 344 H. E. J. BIGGS THE TRUCIAL COAST Contributed by Dr Graham Evans The Trucial Coast forms the southern seaboard of the Persian Gulf from the Mussandam peninsular in the east to the base of the Qatar peninsular in the west. It is a low coastline bordered by numerous low islands and shallow banks which enclose shallow lagoons for much of its length (Evans, Kinsman, Sherman 1964), considerable geomorphological and sedimentological detail is contained in a series of impublished theses of London University by Kinsman (1964), Skipwith (1966) and
. Bulletin of the British Museum (Natural History). 344 H. E. J. BIGGS THE TRUCIAL COAST Contributed by Dr Graham Evans The Trucial Coast forms the southern seaboard of the Persian Gulf from the Mussandam peninsular in the east to the base of the Qatar peninsular in the west. It is a low coastline bordered by numerous low islands and shallow banks which enclose shallow lagoons for much of its length (Evans, Kinsman, Sherman 1964), considerable geomorphological and sedimentological detail is contained in a series of impublished theses of London University by Kinsman (1964), Skipwith (1966) and Kendall (1966). Inland is a narrow coastal plain which passes landwards in the west and central parts into the extensive desert area of the Rub-el-Khali. In the extreme east the coastal beaches and dunes are backed by outwash plains cloaked with dunes which run up to the foot of the Oman Mountains, and lagoons are less common. The coastline is composed almost entirely of Quaternary sediments which are usually unconsolidated but are sometimes cemented to form a friable rock. These sediments are composed almost exclusively of calcium carbonate produced by chemical and biochemical precipitation add breakdown as no freshwater drainage reached the area and there is no supply of sediment to the coast or open waters of the Gulf in this area except for some wind carried material. In a few localities low hills of Tertiary rocks form small scattered headlands. Off shore there is a wide shallow marine area—the Great Pearl Banks—where the bottom rarely exceeds 120 ft. Low islands and banks rise from this shallow sea floor. These off shore islands are mostly salt plugs and show a great variety of rock types and they are often surrovmded by soft Quaternary sediments. Coral is some- PERSIAN GULF. 20 30 Fig. I. Persian Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
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