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Describing Cores

This activity sets the stage for a series of learning activities that use authentic scientific ocean drilling data. Scientific ocean drilling is used to obtain cores of and geophysical wireline logs from holes drilled into the sediments and rock the seafloor. Scientists study the cores and logs that they collect and extract geological, geophysical, geochemical, and environmental information that provides insight into the Earth system. This knowledge enhances our ability to forecast possible future events or conditions, including global climate change.

Most scientific ocean drilling is carried out by the Integrated Ocean Drilling Program (IODP), an international partnership of scientists and research institutions organized to explore the evolution and the structure of Earth.