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The East Pacific Rise was discovered during the famous Challenger expedition in 1875 on its passage from Tahiti to Valparaiso (Murray, 1895), and was investigated by marine geologists in 1904 aboard the RV Albatross (Agassiz, 1906) and in 1928 aboard the RV Carnegie (Soule, 1944). The original soundings were laborious, with hemp ropes used to dredge and sound. Later, wire rope was used, and the major advance to echo sounders was made aboard Carnegie, although these early measurements were often inaccurate (Menard, 1964). Referred to as the “Albatross Plateau” and the “Easter Island Ridge” during the early years of...

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