Over the years, the combined ocean drilling programs (Deep Sea Drilling Project, Ocean Drilling Program, and Integrated Ocean Drilling Program) have recovered thousands of cores from beneath the ocean floor. Students can study a brief synopsis of some of the most important discoveries made from these cores by clicking on an interactive map which shows sampling locations where major discoveries were made. Each link provides access to a photograph of a core section which is accompanied by a description of the events or phenomena preserved in the sediment. Important discoveries preserved in these cores include the asteroid impact at the Cretaceous-Tertiary boundary, mineral-bearing hydrothermal deposits from the Mid-Atlantic Ridge, evidence of plate tectonics, and evidence of climate change.
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