PhD Graduates:
Chris Conwell: PhD, 2023, “Paleoenvironmental and diagenetic significance of paired isotope records in Middle–Late Ordovician marine limestones”; Chris now works as a Senior Scientist at KeyLogic https://www.linkedin.com/in/ctconwell/
Datu Adiatma: PhD, 2023, “Chemostratigraphic and numerical modeling constraints on Ordovician climate, carbon cycling, and carbonate diagenesis”
Teresa Avila: PhD, 2023, “Silicate weathering and Ordovician to Devonian climatic change: pairing strontium and oxygen isotopes in conodont apatite”
Cole T. Edwards, PhD, 2014, Associate Professor at Appalachian State University “Carbon, sulfur, and strontium isotope stratigraphy of the Early-Middle Ordovician: implications for atmospheric oxygen and the Great Ordovician Biodiversification Event”
Alexa R.C. Sedlacek, PhD, 2013, Associate Professor at the University of Northern Iowa. “Strontium Isotope Stratigraphy of the Permian-Triassic Boundary and Early Triassic”
Kate E. Tierney-Cramer, PhD, 2010, Lecturer and Adjunct Professor at the University of Iowa, “Permian climate, sea level and carbon cycling: An integrated bio-, sequence and chemostratigraphic study”
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Bradley D. Cramer, PhD, 2009, Associate Professor at the University of Iowa, “High-resolution Silurian astrochronology using sequence stratigraphy, biostratigraphy, and stable isotope studies”
Seth A. Young, PhD, 2008, Associate Professor at Florida State University. “An integrated chemo-, bio-, and sequence stratigraphic investigation of the Late Ordovician Greenhouse-Icehouse transition”
MS students:
Graduated:
2023 Peter Haber Early Mississippian Ca isotope study of the Kinderhook-Osage boundary carbon isotope excursion; Peter now works for Credere Associates https://www.linkedin.com/in/peter-haber/
2003 Seth A. Young “A Late Middle Ordovician carbon isotope excursion in central and eastern North America: sequence stratigraphic, biostratigraphic, and K-bentonite event stratigraphic relations”
2004 Bradley D. Cramer “Glaciation, CO2, and organic carbon burial during the early Silurian: carbon isotope stratigraphy from the mid-continent of North America”
2004 Nathaneal Barta “Investigation of the correlation of the lower Chatfieldian (upper Middle Ordovician) strata of New York, Ontario and Pennsylvania using the Guttenberg carbon isotope excursion”
2004 Matthew J. Williams “Carbon isotope chemostratigraphy and ocean chemistry analysis within the Helderberg group: Silurian-Devonian, Appalachian Basin”
2005 Kate E. Tierney “Carbon isotopic response to oceanographic changes at Milankovitch scale periodicity in Pennsylvanian aged limestones from Arrow Canyon, Nevada”
2006 Lisa Fay, “Carbon cycling in the Devonian Onondaga Formation of New York: Paleogeographic implications”
2008 Jeremy Gouldey, “Strontium and carbon isotope stratigraphy of the Silurian: Implications for tectonics and weathering”
2014 Nicholas Umholtz: “Ordovician C isotope stratigraphy and the Knox Unconformity at East River Mountain, West Virginia”
2018 Datu Adiatma: “Did early land plants produce a step-change in atmospheric oxygen centered on the Late Ordovician Sandbian Age ~458 Ma?”
2019 Teresa Avila: Seafloor weathering and the Middle to Late Ordovician seawater 87Sr/86Sr inflection point preserved in conodont apatite