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Ancient Caribbean Rocks-Ancient sediment rocks found deep beneath the Caribbean Sea are examined by Norman Terence Edgar of Scripps Institution of Oceanography (left) and John B. Saunders of Texaco Trinidad Inc. (right). Both were cruise co-chief scientists aboard the Deep Sea Drilling Project Glomar Challenger during a recent cruise in the Caribbean Sea when these samples were collected. Fossils in the sediments tell geologists that the Caribbean Sea is a relatively young feature in the earth's surface. 1971