Student Work

Undergraduate students are an integral part of the work done for the DAGGER project.

Olivia Paschall '18

Olivia's pioneering work on the geochemistry of the Pho Han Formation in Vietnam has resulted in a paper that is one of the first to correlate massive volcanism with the Hangenberg Crisis.  Olivia has also contributed to the group's work in Mongolia through field mapping and digital elevation models.  Her contributions include (so far) the following peer reviewed publications and conference presentations:

*Paschall, Olivia C., Carmichael, Sarah K., Waters, Johnny A., Koenigshof, Peter, Ta, Phuong H. Komatsu, Toshifumi, and *Dombrowski, Allison D., in press, The Hangenberg Event in Vietnam: sustained ocean anoxia with a volcanic trigger?, submitted to Global and Planetary Change (DOI: 10.1016/j.gloplacha.2019.01.021)

*Olivia Catherine Paschall, Sarah K Carmichael, Peter Königshof, Johnny A. Waters, Michael Joachimski, Phoung Ta Hoa, and Toshifumi Komatsu, 2018, The role of volcanism in triggering the Hangenberg anoxia event: New (and better!) data across the Devonian-Carboniferous transition in the Pho Han Formation, Cat Ba Island, Vietnam, American Geophysical Union Fall Meeting, Washington, DC, Abstract #PP027-384534.

*Olivia C. Paschall, Sarah K Carmichael, *Allison D Dombrowski, *Cameron J. Batchelor, Drew S. Coleman, Johnny A. Waters, and Peter Königshof, 2017, 87Sr/86Sr Across the Devonian-Carboniferous Transition Within the Pho Han Formation, Cat Ba Island, Vietnam: New Data Outside of an Old Orogeny, American Geophysical Union Fall Meeting, New Orleans, LA, Abstract #PP035-294683.

Cameron Batchelor '15

Cameron has worked for three years on several aspects of the DAGGER project, and has been an invaluable team member for her work each summer (and fall break, and spring break, and winter break) in the Isotope Geochemisty Lab at UNC Chapel Hill.  Her work spans Sr isotope chemostratigraphy in western China to radiometric dating of zircons from Mongolia.  Her contributions include one peer reviewed paper (so far) as well as several conference presentations:

Carmichael, S.K., Waters, J.A., Batchelor, C.J., Coleman, D., Suttner, T.J., Kido, E., Moore, L.M., and Chadimova, L., 2015, Climate instability and tipping points in the Late Devonian: Detection of the Hangenberg Event in an open oceanic island arc in the Central Asian Orogenic Belt, Gondwana Research (doi:10.1016/j.gr.2015.02.009). 

Batchelor, C.J., Drew Coleman, Carmichael, S.K. & Waters, J.A., 2014, Zircon Age Dating of The Late Devonian Heishantou Formation, IGCP 596 & IGCP 580 Joint Meeting and Field-Workshop (Ulaanbaatar, Mongolia 5-18th August 2014) 

Carmichael, S. K., Waters, J., DeReuil, A.A., Moore, L. M., Batchelor, C., Sanchez, S., Suttner, T., and Kido, E., 2014, Island Arcs in the Central Asian Orogenic Belt: implications for Late Devonian Ocean Anoxia. The Paleontological Society Special Publications, v. 13, p. 155

She is a co-author on numerous other conference presentations as well.

Cameron is currently working on her PhD in isotope geochemistry at the University of Wisconsin - Madison. 

Joshua Feierstein '15

Josh has worked tirelessly to migrate our extensive data set from a complicated and not-user-friendly database system to an easy-to-navigate web-based SQL system for our collaborators (accounts are provided by contacting Dr. Sarah Carmichael).  The http://dagger.appstate.edu site is his creation (shown below).

DAGGER data portal screenshot

Josh is currently working as a geologist with GTA Associates in Raleigh, NC.

Aubry Dereuil '13

Aubry was the first student to work on the DAGGER project back in 2011.  Her project dramatically morphed from a relatively straightforward isotope and carbonate geochemistry project into the search for anoxia at the Frasnian-Famennian boundary.  Her contributions include one peer reviewed paper as well as several conference presentations:

Carmichael, Sarah K., Waters, Johnny A., Suttner, Thomas J., Kido, Erika, and DeReuil, Aubry, 2014, A New Model for the Kellwasser Anoxia Events (Late Devonian): Shallow Water Anoxia in an Open Oceanic Setting in the Central Asian Orogenic Belt, Palaeogeography, Palaeoclimatology, Palaeoecology, v. 399, p. 394-403

DeReuil, A. A., Carmichael, S. K., Waters, J. A., Suttner, T. J., and Kido, E., 2013, Recognition of the Kellwasser event in the Late Devonian Hongguleleng Formation of Northwestern China: Geological Society of America Abstracts with Programs #225432. 

Waters, Johnny A., Carmichael, Sarah K., DeReuil, Aubry A., Suttner, Thomas J., Kido, Erika, and Chen, Xiuqin, 2012, Geochemistry across the Frasnian / Famennian Boundary, Hongguleleng Formation, Xinjiang Province, China. Mineralogical Magazine, vol. 76 no. 6, #2526 (V.M. Goldschmidt Conference) 

DeReuil, Aubry A., Waters, Johnny A., Carmichael, Sarah K., Suttner, Thomas J., Kido, Erika, and Chen, Xiuqin, 2012, Diagenetic alteration in samples from the Hongguleleng Formation in the late Devonian of northwestern China. Geological Society of America Southeastern Section - 61st Annual Meeting

She is a co-author on numerous other conference presentations as well.  Aubry has recently finished her PhD in Geology and Geophysics at the University of Utah. 

L. McCain Moore '15

McCain spent a significant part of her summer in the XRD lab working on sediments spanning the Heishantou Formation in China. Her contributions to the DAGGER group include one peer reviewed paper and one conference presentation (and she is a co-author on numerous additional conference presentations):

Carmichael, S.K., Waters, J.A., Batchelor, C.J., Coleman, D., Suttner, T.J., Kido, E., Moore, L.M., and Chadimova, L., 2015, Climate instability and tipping points in the Late Devonian: Detection of the Hangenberg Event in an open oceanic island arc in the Central Asian Orogenic Belt, Gondwana Research (doi:10.1016/j.gr.2015.02.009). 

Carmichael, S. K., Waters, J., DeReuil, A.A., Moore, L. M., Batchelor, C., Sanchez, S., Suttner, T., and Kido, E., 2014, Island Arcs in the Central Asian Orogenic Belt: implications for Late Devonian Ocean Anoxia. The Paleontological Society Special Publications, v. 13, p. 155

McCain is currently working on her MS in Geology at Queens College in New York.