Current Graduate Students Rosa Leal Ph.D. student Department of Geology and Environmental Geosciences Northern Illinois University DeKalb, IL 60115 rbl@geol.niu.edu Information   Liliana Lefticariu Ph.D. student Department of Geology and Environmental Geosciences Northern Illinois University DeKalb, IL 60115 lleftic@geol.niu.edu   Mihai Lefticariu Ph.D. student Department of Geology and Environmental Geosciences Northern Illinois University DeKalb, IL 60115 mleftic@geol.niu.edu Resume Guadalupe Velazquez-Oliman Ph.D. student Department of Geology and Environmental Geosciences Northern Illinois University DeKalb, IL 60115 gvo@geol.niu.edu