Gibraltar Bay, located near the southernmost tip of the Iberian Peninsula, is the central feature of this astronaut photograph. The famous Rock of Gibraltar that forms the northeastern border of the bay is formed of Jurassic-era seafloor sediments that solidified into limestone, a rock formed mostly of the mineral calcite, which is found in the shells of sea creatures. The limestone was subsequently lifted above the ocean surface when the African and Eurasian tectonic plates collided. The cities of La Linea and Algeciras bordering the bay, together with petroleum-processing facilities along the northern shoreline, are part of Spain, whereas the city of Gibraltar itself (to the west of and including the Rock) is under the jurisdiction of the United Kingdom.
Published Jan 8, 2007
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