Continental Reconstructions (image) University of Wyoming Share Print E-Mail Caption Kevin Chamberlain, a research professor in the UW Department of Geology and Geophysics, is co-author of a paper that appears online in Nature Geoscience today (April 11). The paper highlights a technique that he helped develop to test pre-Pangea continental reconstructions. Here, Chamberlain poses with a mass spectrometer and holds a piece of a mafic dike, or black rock, which cuts through white, or granitic, rock (also pictured) that represents continental crust. Credit University of Wyoming Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.