Studying Sediment
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Studying Sediment

July 8, 2010
Cristina Millan, a Ph.D. student at The Ohio State University, studies fragments of sediment under a microscope. The little bits of sediment once sat hundreds of meters below the seafloor in and near McMurdo Sound, Antarctica, until they were extracted in a core as part of the Antarctic Geological Drilling project, known as ANDRILL. The cores, consisting of such things as glacial rocks, sand, volcanic ash, siltstone and mudstone, can provide details about what occurred along the continents coastline and ice sheets millions of years ago as the climate heated and cooled. Millan and her advisor, Terry Wilson, a principal investigator on the ANDRILL project, want to learn more about the rifting of the underwater basin from which the core was drilled, and the forces that caused it to form, as well as the Transantarctic Mountains that split the continent between east and west. The ANDRILL program is supported in part by the National Science Foundation. To learn more, visit the ANDRILL Web site (Date of Image: April 2008)

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