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The researchers characterised a region of intense deformation in which the relative movement of blocks is caused by left-lateral strike-slip faults known as “the Transalboran fault system,” which expands from Murcia (Spain) to Alhucemas (Morocco). The other significant fault of the Gibraltar Arc area, which crosses the Transalboran fault perpendicularly, is called Nerja-Yusuf and goes from Málaga (Spain) to the Algerian coast.
Ice is extremely heavy—weighing about one ton per cubic meter—and glaciers are massive sheets of ice. When they are intact, glaciers exert enormous pressure on the portion of the Earth’s surface they cover. When glaciers begin to melt—as they are doing now at an increasingly rapid rate due to global warming—that pressure is reduced and eventually released.