Fence to nowhere. Image from an original Nat Geo shoot in March 2010 of the Arabian Wildlife Park of Sir Bani Yas Island, Abu Dhabi, UAE.
Sir Bani Yas Island is located in the Arabian Gulf near the western coastline of the United Arab Emirates (UAE). Roughly 14 kilometers ( miles) by 9 kilometers (6 miles), the island is the surface expression of a salt dome, which is a pocket of salt minerals that balloons upward into overlying layers of sedimentary rocks. Salt domes start during past periods of alternating wet and dry climate. A common scenario is an enclosed basin that is alternately flooded and then subjected to extreme drying. High rates of evaporation deposit thick layers of salt minerals, such as common table salt and gypsum (a chalky mineral that is a major component of wallboard). These layers are eventually buried by sediments. If the salt layers are buried deeply enough, the pressure can cause them to flow. Salt has lower density than the surrounding rock, so it tends to flow upwards, pushing up the overlying layers of rock to form a dome. While many salt domes retain a cap of the youngest rock layers at the surface, in some cases the underlying salt extrudes all the way to the surface. The central mountains of Jebel Wahid mark the location of the Sir Bani Yas salt dome. The dome has breached the surface but exposed salt, primarily gypsum, is eroded, leaving a rugged, insoluble cap made of fragments of the overlaying sedimentary and volcanic rocks. Sand and silt derived from the Jebel Wahid and surrounding gravel-covered areas form beaches along the outer edge of the island. Sir Bani Yas Island was the personal retreat of the late Sheikh Zayed Bin Sultan Al Nahyan who was president of the UAE from 1971-2004. He established a nature preserve on the island for animals native to the Arabian Peninsula (including striped hyena, cheetah, oryx, ostrich, and gazelle) that is now open to the public.
Size: 3008px × 2000px
Location: Sir Bani Yas Island, Abu Dhabi, United Arab Emirates
Photo credit: © Rosemary Behan / Alamy / Afripics
License: Licensed
Model Released: No
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