Paul A. Schroeder
Professor of Geology, University of Georgia
UGA - University of Georgia
Schroeder's UGA page
PhD, Geology, Yale University, 1992
Dr. Schroeder's research interests as they relate to the Calhoun CZO can be found at http://clay.uga.edu/czo/
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CZO Publications
Papers/Books
2020
Quantification of Mixed-Layer Clays in Multiple Saturation States Using NEWMOD2: Implications for the Potassium Uplift Hypothesis in the SE United States. Austin, J.C., Richter, D.D. & Schroeder, P.A. (2020): Clays and Clay Minerals
2020
Development of Martian regolith and bedrock simulants: Potential and limitations of Martian regolith as an in-situ resource. Fackrell, Laura E., Paul A. Schroeder, Aaron Thompson, Karen Stockstill-Cahill, Charles A.Hibbitts (2020): Icarus 354: 114055
2020
Soil production and the soil geomorphology legacy of Grove Karl Gilbert. Richter, Daniel D., Martha-Cary Eppes, Jason C. Austin, Allan R. Bacon, Sharon A. Billings, Zachary Brecheisen, Terry A. Ferguson, Daniel Markewitz, Julio Pachon, Paul A. Schroeder, Anna M. Wade (2020): Soil Science Society of America Journal 84(1): 1-20
2019
Redoximorphic Bt horizons of the Calhoun CZO soils exhibit depth-dependent iron-oxide crystallinity. Chen, Chunmei, Diego Barcellos, Daniel D. Richter, Paul A. Schroeder, Aaron Thompson (2019): Journal of Soils and Sediments 19(2):785-797
2019
Natural, incidental, and engineered nanomaterials and their impacts on the Earth system. Hochella, Michael F., Jr., David W. Mogk, James Ranville, Irving C. Allen, George W. Luther, Linsey C. Marr, B. Peter McGrail, Mitsu Murayama, Nikolla P. Qafoku, Kevin M. Rosso, Nita Sahai, Paul A. Schroeder, Peter Vikesland, Paul Westerhoff, Yi Yang (2019): Science 363 (6434): eaau8299
2019
A coupled microscopy approach to assess the nano-landscape of weathering. Lybrand, Rebecca A., Jason C. Austin, Jennifer Fedenko, Rachel E. Gallery, Erin Rooney, Paul A. Schroeder, Dragos G. Zaharescu, & Odeta Qafoku (2019): Scientific Reports 9: Article number 5377 Cross-CZO
2019
A correlative bimodal surface imaging method to assess hyphae-rock interactions. Qafoku, Odeta, Rebecca A. Lybrand, Vaithiyalingam Shutthanandan, Rachel E. Gallery, Jason C. Austin, Paul A. Schroeder, Jennifer Fedenko, Erin Rooney, and Dragos G. Zaharescu (2019): Microscopy and Microanalysis, 25(S2), 2436-2437 Cross-CZO
2018
Modifications of 2:1 clay minerals in a kaolinite dominated Ultisol under changing land-use regimes. Austin, Jason C., Amelia Perry, Daniel D. Richter, and Paul A. Schroeder (2018): Clays and Clay Minerals 66(1): 61-73
2018
Clays in the Critical Zone. Paul A. Schroeder (2018): Cambridge University Press, Cambridge, UK Cross-CZO National
2018
Ideas and perspectives: Strengthening the biogeosciences in environmental research networks. Richter, D.D., S.A. Billings, P.M. Groffman, E.F. Kelly, K.A. Lohse, W.H. McDowell, T.S. White, S. Anderson, D.D. Baldocchi, S. Banwart, S. Brantley, J.J. Braun, Z.S. Brecheisen, C.W. Cook, H.E. Hartnett, S.E. Hobbie, J. Gaillardet, E. Jobbagy, H.F. Jungkunst, C.E. Kazanski, J. Krishnaswamy, D. Markewitz, K. O’Neill, C.S. Riebe, P. Schroeder, C. Siebe, W.L. Silver, A. Thompson, A. Verhoef, G. Zhang (2018): Biogeosciences 15: 4815-4832 Cross-CZO National
2016
Substrate quality influences organic matter accumulation in the soil silt and clay fraction. Cyle, K.T., N. Hill, K. Young, T. Jenkins, D. Hancock, P.A. Schroeder, A. Thompson (2016): Soil Biology and Biochemistry 103: 138-148
2016
Clays in the Critical Zone: An Introduction. Paul Schroeder (2016): Clays and Clay Minerals 65 (5): 586-587
2014
Assessment of Pedogenic Gibbsite as a Paleo-PCO2 Proxy Using a Modern Ultisol. Austin, J.C., and P.A. Schroeder (2014): Clays and Clay Minerals 62(4): 253-266
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Other CZO Publications
2019
Biological Cycling of Potassium by Roots as a Control on Mixed-layer Clays. Austin, Jason, Paul A Schroeder, Daniel deB. Richter (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019
2019
Ice Formation and Microbes: A Microscale Perspective on Interactive Biophysical Weathering Agents in the Critical Zone. Lybrand, Rebecca, George Dragos Zaharescu, Jason Austin, Swarup China, Rachel E. Gallery, Paul A. Schroeder, Daniel Veghte, and Odeta Qafoku (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas Cross-CZO
2019
Identifying the organic and inorganic products of incipient weathering in natural environments. Lybrand, Rebecca, Jason Austin, Rosalie Kae Chu, Odeta Qafoku, Tom Resch, Erin Rooney, Paul A Schroeder, Malak M Tfaily, Jason Toyoda, Vaithiyalingam Shutthanandan, Dragos George Zaharescu, Maya Bergmann, Benjamin Pierce, Rachel E Gallery (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019 Cross-CZO
2019
Quantification of mixed‐layer clays in multiple saturation states using NEWMOD2: Implications for the potassium uplift hypothesis. Schroeder, Paul A., Daniel D. Richter, and Jason C. Austin (2019): EuroClay 2019, Paris, France, 1-5 July 2019
2017
Clay mineral alterations in response to land-use change in the kaolinite dominated residual soil of the Calhoun Critical Zone Observatory. Austin, J.C.; Schroeder, P.A.; Perry, A. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017
2017
Cross-scale perspectives on mineral weathering in the Critical Zone (Invited Presentation). Lybrand, Rebecca, Jason Austin, Paul A. Schroeder, Dragos Zaharescu, Rachel Gallery (2017): Geological Society of America Annual Meeting, Seattle, WA, 22-25 October, 2017 Cross-CZO
2017
Calhoun CZO as an ancient geobiologic and land-use altered time machine. Richter, D. deB., J. Wang, R. Bras, D. Markewitz, D. Nelson, J. Austin, P. Schroeder, S.A. Billings, K. O’Neill, J. Giesen, W.S. Holbrook, and B. Carr (2017): Critical Zone Science: Current Advances and Future Opportunities, workshop in Arlington, VA, 4-6 June, 2017
2017
Gilbert’s soil production paradigm and a critical zone’s size-dependent fractionation of particles. Richter, D.deB., J. Austin, R. Anderson, A. Bacon, S. Brantley, Z. Brecheisen, A. Cherkinsky, W.S. Holbrook, V. Marcon, J.Pachon, P. Schroeder, A. Thompson, and A. Wade (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017 Cross-CZO
2017
Gilbert's soil production paradigm applied to a critical zone's fractionation of particle sizes. Richter, Daniel deB., Jason Austin, Robert S Anderson, Allan R Bacon, Susan L Brantley, Zachary Brecheisen, Paul A Schroeder, Anna Wade, W. Steven Holbrook, Virginia Marcon, Aaron Thompson (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017 Cross-CZO
2017
Quantifying mineral transformations in the Calhoun Critical Zone Observatory (CCZO): What is it and how much is there?. Schroeder, Paul A., Jason C. Austin, and Daniel deB. Richter (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017
2016
Semi-quantitative deep regolith clay mineralology of the Calhoun Critical Zone Observatory using NEWMOD 2. Austin, J.C.; P.A. Schroeder; and D.deB. Richter (2016): Clay Minerals Society Annual Meeting, Atlanta, GA
2016
Clay mineral concentration with depth and land use history in the critical zone in Calhoun, South Carolina. Moraes, Anthony, Schroeder, Paul A. and Austin, Jason (2016): Geological Society of America Annual Meeting in Denver, Colorado, USA
2016
Deep regolith bulk mineralogy of the Calhoun Critical Zone Observatory using x-ray powder diffraction. Schroeder, P.A.; J.C. Austin; and D.deB. Richter (2016): Clay Minerals Society Annual Meeting, Atlanta, GA
2016
Reconnaissance oxygen and hydrogen stable isotope geochemistry of waters from the critical zone in the Iznik Lake basin region, Turkey. Schroeder, P.A.; Ö.I. Ece; C. Demirel; and A. Milewski (2016): 7th International Geochemistry Symposium
2015
Preliminary interpretations of differences in the clay mineralogy of the Calhoun CZO between ‘pristine’ and eroded soils at the Long-Term Pine Plots. Austin, J.C., and P.A. Schroeder (2015): Calhoun CZO 2015 Summer Science Meeting
2015
Creating deep soil core monoliths: Beyond the Solum. Schroeder, P. A. (2015): Calhoun CZO 2015 Summer Science Meeting
2015
Critical Zone Observatories: Overview and current research activities in Turkey and the United States . Schroeder, P. A., Ö. I. Ece, and N. C. Balci (2015): 68th Turkish Geological Congress, Ankara, Turkey
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News
Sessions related to CZ Science at the 2021 International Clay Conference
27 Oct 2020 - The 17th International Clay Conference will be held July 12-16, 2021 in Istanbul, Turkey.
Paul Schroeder featured on NPR’s Pulse of the Planet
05 Jun 2020 - Four 2 minute pieces featuring Paul Schroeder talking about clay were aired on NPR's Pulse of the Planet in February 2020. Please see the links...
Geology of the Calhoun CZO
05 Jun 2020 - Barrett "Bear" Jordan's MS thesis on the geology of the Calhoun is now posted! Bear's advisor Paul Schroeder says this is "a bit more...
New book by Paul Schroeder: Clays in the Critical Zone
17 Aug 2018 - Paul Schroeder has written a remarkable new book on the story of clays in the critical zone. The book builds on a short article by the same name...
Elevating the biogeosciences within environmental research networks
02 Mar 2018 - This manuscript, led by Dan Richter with six Calzones co-authors, was just submitted to Biogeosciences Discussions.
2018 Southeast Friends of the Pleistocene Field Conference
09 Feb 2018 - Geophysics, Geochemistry, and Biogeochemistry of the Southern Piedmont Critical Zone
X-ray Diffraction for Clay Minerals at Calhoun
01 May 2017 - Anna Wade (visiting from Duke University) and Jay Austin (based at the University of Georgia) are collaborating by using X-ray Diffraction (XRD) to...
Eight new soil pits dug at the Calhoun!
17 Oct 2016 - Eight soil pits were installed at the Calhoun CZO on 17-18 October 2016 for easy access for soil sampling down to 2 meters. Photo: Will Cook.
Field trip to quarry near Calhoun CZO
09 Jun 2016 - On Thursday 9 June 2016, Paul Schroeder led a several hour tour of the Hanson Aggregates Quarry (AKA Mary Lou Rock Quarry) in Clinton SC, about 15...
Big Rain Event at the Calhoun!
13 Oct 2015 - The Calhoun CZO received nearly 25 cm rain in 24-hr Sunday 4 October. Paul Schroeder shot a photo of Ryan Fimmen's 2004 "Tyger Stripe"...
Paul Schroeder presents talks on CZO science in Turkey
20 Jan 2015 - Geology Prof. Paul Schroeder from UGA is on sabbatical at Istanbul Technical University in Turkey and has been spreading the word about CZO science.
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Events
2018 Clay Minerals Society Annual Meeting
The 55th Annual Meeting of the Clay Minerals Society: New Visions in Clay Science
University of Illinois at Urbana-Champaign.Clay minerals in the Calhoun Critical Zone Observatory
Calhoun CZO, Union Co., SC.Clays in the Critical Zone
Clays in the Critical Zone: soils, weathering and elemental cycling
Edinburgh, Scotland.
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