Journal article about Lesley Urasky's PolarTREC expedition, Glacial History in Antarctica, published in "In the Trenches", the news magazine of the National Association of Geoscience Teachers.
An article about Lesley Urasky's PolarTREC expedition, Glacial History in Antarctica during the 2010-2011 research season that appeared in the University of Wyoming's Alumnews.
During Lesley Urasky’s expedition, “Glacial History in Antarctica”, the team collected rock samples which were taken back to the University of Washington to be dated using cosmogenic (exposure) dating. This method of radiometric dating measures the ratio of isotopes of Beryllium (9Be:10Be) produced by the interaction of cosmic rays with minerals in rocks. This lesson will introduce the student to
Nature creates its own density column in marine systems, which is extremely important for the triggering of the spring bloom of phytoplankton. Phytoplankton are an important food source for all organisms- from microscopic zooplankton to large marine mammals such as walrus and whales. The different salinities (and therefore, different densities) of water help to stabilize the water column (by limiting