Faculty, Staff and Students

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Andrew D. Czaja

Title: Assistant Professor, Precambrian Paleobiology, Astrobiology, and Geochemistry
Office: 506 Geology-Physics Building
Tel: 513-556-3574
Email: andrew.czaja@uc.edu
Web: http://www.andyczaja.com/

Precambrian Paleobiology, Astrobiology, and Biogeochemistry: Early evolution of life on Earth; Archean fossil record of South Africa and Australia; geologic record of microbial metabolic evolution; Mesoproterozoic terrestrial microbial ecosystems; kerogen geochemistry; in situ morphological and geochemical analyses of Precambrian microfossils.

Education

  • Ph.D., University of California, Los Angeles, Los Angeles, CA, 2006 (Geology (concentration: Paleobiology)).
  • B.S., University of Connecticut, Storrs, CT, 1998 (Environmental Science and Biology).

Research Information

Research Support

  • (PI), Czaja, A.D. and Havig, J.R., Trace elements as a biosignature for microbial life in modern and ancient hydrothermal systems: implications for the search for extraterrestrial life, NASA Exobiology. $895,184. 2019 to 2021. Status: Pending.
  • (Co-I), Tice, M., Bostick, B, Czaja, A.D., Marin-Carbonne, J., and Shapiro, R., Oxidizing Oases in the Paleoarchean Moodies Group, Barberton Greenstone Belt, South Africa, NASA Exobiology. $387,694. 2018 to 2022. Status: Pending.
  • (PI), Czaja, Andrew, Water Quality and Its Impact on Pre-Industrial Civilization: Diatom, Microbiome and Microbotanical Analyses of Reservoir Sediments from the Ancient Maya City of Tikal, UC's University Research Council. (URC Interdisciplinary AY2016-17), $49,838.00. 03/28/2017 to 06/30/2018. Status: Active.
  • (PI), Czaja, Andrew, 5th Annual Midwest Geobiology Symposium , The Paleontological Society. (PaleoSoc2016), $1,000.00. 10/14/2016 to 10/15/2017. Status: Awarded.
  • (Collaborator), Czaja, Andrew; Dunning, Nicholas; Hamilton, Trinity; Lentz, David; Scarborough, Vernon, Novel Molecular and Geochemical Analyses of Reservoir Sediments at the Ancient Maya City of Tikal, National Science Foundation. (BCS-1642547), $34,937.00. 09/01/2016 to 08/31/2017. Status: Active.
  • (Collaborator), Czaja, Andrew; Diefendorf, Aaron; Hamilton, Trinity; Havig, Jeff, Midwest Geobiology Conference , National Aeronautics and Space Administration. (OSGC Student-Innovative-Creative-Hands-on Project (SICHOP) grant), $2,000.00. 06/06/2016 to 12/31/2016. Status: Awarded.
  • (PI), Czaja, Andrew, Exploration of the 2.5-billion-year-old Biosphere of South Africa., National Geographic Society. (GRANT W323-14), $10,680.00. 06/09/2014 to 05/31/2015. Status: Awarded.

Publications

Peer-reviewed Publications

  • Vrazo, M.B., Diefendorf, A.F., Crowley, B.E., and Czaja, A.D. (2018). Late Cretaceous marine arthropods relied on terrestrial organic matter as a food source: geochemical evidence from the Coon Creek lagerstätte in the Mississippian embayment. Geobiology, 16, 160–178.
  • Guo, Z., Peng, X., Czaja, A.D., Chen, S., and Ta, K. (2018). Cellular taphonomy of well-preserved Gaoyuzhuang microfossils: a window into the preservation of ancient cyanobacteria. Precambrian Research, 304, 88–98.
  • Muscente, A.D., Czaja, A.D., Tuggle, J., Winkler, C., and Xiao, S. (2018). Manganese oxides resembling microbial fabrics and their implications for recognizing inorganically preserved microfossils. Astrobiology, 18 (3), 249–258.
  • Czaja, A.D., Van Kranendonk, M.J., Beard, B.L., and Johnson, C.M. (2018). A multistage origin for Neoarchean layered hematite-magnetite BIF from the Weld Range, Yilgarn Craton, Western Australia. Chemical Geology, 488, 125–137.
  • Smith, A.J.B., Beukes, N.J., Gutzmer, J., Czaja, A.D., Johnson, C.M., and Nhleko, N. (2017). Oncoidal granular iron formation in the Mesoarchaean Pongola Supergroup, southern Africa: Textural and geochemical evidence for biological activity during iron deposition. Geobiology, 15, 731–749.
  • Kang, J., Czaja, A.D., and Guliants, V.V. (2017). Carbon dioxide as feedstock in selective oxidation of propane. European Journal of Inorganic Chemistry, 2017 (40), 4757–4762.
  • Czaja, A.D., Beukes, N.J., and Osterhout, J.T. (2016). Sulfur-oxidizing bacteria prior to the Great Oxidation Event from the 2.52 Ga Gamohaan Formation of South Africa. Geology, 44 (12), 983–986.
  • d'Abzac, F.-X., Czaja, A.D., Beard, B.L., Schauer, J.J. , and Johnson, C.M. (2014). Iron distribution in size-resolved aerosols generated by UV-femtosecond laser ablation: Influence of cell geometry and implications for in situ isotopic determination by LA-MC-ICP-MS. Geostandards and Geoanalytical Research, 38 (3), 293-309.
  • Wilmeth, D.T., Dornbos, S.Q., Isbell, J.L., and Czaja, A.D. (2014). Putative domal microbial structures in fluvial siliciclastic facies of the Mesoproterozoic (1.09 Ga) Copper Harbor Conglomerate, Upper Peninsula of Michigan, USA. Geobiology, 12, 99-108.
  • d'Abzac, F.-X., Beard, B.L., Czaja, A.D., Konishi, H., Schauer, J., and Johnson, C.M. (2013). Iron isotope composition of particles produced by UV-femtosecond laser ablation of natural oxides, sulfides, and carbonates.. Analytical Chemistry, 85, 11885-11892.
  • Li, W., Czaja, A.D., Van Kranendonk, M.J., Beard, B.L., Roden, E.E, and Johnson, C.M. (2013). An anoxic, Fe(II)-rich, U-poor ocean 3.46 billion years ago. Geochimica Et Cosmochimica Acta, 120, 65-79.
  • Shen-Miller, J., Aung, L.H., Turek, J., Schopf, J.W., Tholandi, M., Yang, M., and Czaja, A.D. (2013). Centuries-old viable fruits of Nelumbo nucifera Gaertn var. China Antique. Tropical Plant Biology, 6 (2-3), 53-68.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., Roden, E.E., Li, W., and Moorbath, S. (2013). Biological Fe oxidation controlled deposition of banded iron formation in the ca. 3,770 Ma Isua Supracrustal Belt (West Greenland) . Earth and Planetary Science Letters, 363, 192-203.
  • Czaja, A. D., Johnson, C. M., Roden, E. E., Beard, B. L., Voegelin, A. R., Nägler, T. F., Beukes, N. J., & Wille, M. (2012). Evidence for free oxygen in the Neoarchean ocean based on coupled iron–molybdenum isotope fractionation. Geochimica Et Cosmochimica Acta, 86 (1–2), 118–137.
  • Czaja, A. D., Johnson, C. M., Yamaguchi, K. E., & Beard, B. L. (2012). Comment on "Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation". Science, 335 (6068), 538.
  • Czaja, A. D., Johnson, C. M., Beard, B. L., Eigenbrode, J. L., Freeman, K. H., & Yamaguchi, K. E. (2010). Iron and carbon isotope evidence for ecosystem and environmental diversity in the ~2.7 to 2.5 Ga Hamersley Province, Western Australia. Earth and Planetary Science Letters, 292 (1–2), 170–180.
  • Czaja, A. D., Kudryavtsev, A. B., Cody, G. D., & Schopf, J. W. (2009). Characterization of permineralized kerogen from an Eocene fossil fern. Organic Geochemistry, 40 (3), 353–364.
  • Schopf, J. W., Kudryavtsev, A. B., Czaja, A. D., & Tripathi, A. B. (2007). Evidence of Archean life: stromatolites and microfossils. Precambrian Research, 158 (3–4), 141–155.
  • Czaja, A. D., Kudryavtsev, A. B., & Schopf, J. W. (2006). New method for the microscopic, nondestructive acquisition of ultraviolet resonance Raman spectra from plant cell walls. Applied Spectroscopy, 60 (4), 352–355.
  • Schopf, J. W., Kudryavtsev, A. B., Agresti, D. G., Czaja, A. D., & Wdowiak, T. J. (2005). Raman imagery: a new approach to assess the geochemical maturity and biogenicity of permineralized Precambrian fossils. Astrobiology, 5 (3), 333–371.
  • Jones, C. S., Cardon, Z. G., & Czaja, A. D. (2003). A phylogenetic view of low-level CAM in Pelargonium (Geraniaceae). American Journal of Botany, 90 (1), 135–142.
  • Schopf, J. W., Kudryavtsev, A. B., Agresti, D. G., Wdowiak, T. J., & Czaja, A. D. (2002). Images of the Earth's earliest fossils? Reply. Nature, 420 (3), 477.
  • Schopf, J. W., Kudryavtsev, A. B., Agresti, D. G., Wdowiak, T. J., & Czaja, A. D. (2002). Laser-Raman imagery of Earth's earliest fossils. Nature, 416 (3), 73–76.
  • Cardon, Z. G., Czaja, A. D., Funk, J. L., & Vitt, P. L. (2002). Periodic carbon flushing to roots of Quercus rubra saplings affects soil respiration and rhizosphere microbial biomass. Oecologia, 133, 215–233.

Invited Publications

  • Czaja, A. D. (2010). Microbes and the rise of oxygen,. Nature Geoscience,, 3 ((3):), 522–523.
  • Czaja, A. D. (2010). Review of "Astrobiology of Earth: The Emergence, Evolution, and Future of Life on a Planet in Turmoil", by Joseph Gale,. Quarterly Review of Biology,, 85 ((1):), 88.

Published Abstracts

  • Czaja, A. D., Johnson, C. M., Beard, B. L., & Van Kranendonk, M. J. (2010). Iron isotopes reveal an abiological origin for a 2.75 Ga BIF from the Yilgarn Craton, Western Australia[Abstract]. Geochimica Et Cosmochimica Acta, 74 (12, S1), A201.
  • Czaja, A. D., Kudryavtsev, A. B., Cody, G. D., & Schopf, J. W. (2008). Similar fossil ferns having dissimilar organic geochemical preservation[Abstract]. Geochimica Et Cosmochimica Acta, 72 (12, S1), A193.
  • Czaja, A. D. (2006). Spectroscopic analysis of the thermal alteration of permineralized organic matter[Abstract]. Origins of Life and Evolution of the Biosphere, 36 (3), 311.
  • Czaja, A. D., Cody, G. D., & Schopf, J. W. (2004). Turning ferns into fossils: biogeochemical alchemy[Abstract]. PaleoBios, 24 (S1), 1–2.
  • Czaja, A. D., Cody, G. D., & Schopf, J. W. (2004). Turning ferns into fossils: biogeochemical alchemy[Abstract]. International Journal of Astrobiology, 3 (Suppl. S1), 27.

Book Chapters

  • Schopf, J. W., Kudryaytsev, A. B., Tripathi, A. B., & Czaja, A. D. (2011). Three-Dimensional Morphological (CLSM) and Chemical (Raman) Imagery of Cellularly Mineralized Fossils. In Allison, P. A.; Bottjer, D. J. (Eds.), Taphonomy: Process and Bias Through Time, 2nd Ed. (pp.457-486). New York: Springer.

Encyclopedia Articles

  • Muscente, A.D., Czaja, A.D., Riedman, L.A., and Colleary, C. (2017). Organic Matter in Fossils. Encyclopedia of Geochemistry

Presentations & Lectures

Invited Presentations

  • Czaja, A.D. (2018). Discovering the Mars 2020 Rover UC Alumni Weekend, Explore UC program, University of Cincinnati.
  • Czaja, A.D. (2017). Geological fieldwork on another world: plans for Mars sample return and the search for extraterrestrial life UC Undergraduate Astronomy Club meeting, University of Cincinnati.
  • Czaja, A.D. (2017). Selecting a field work site from 50 million kilometers away: the landing site selection process for the Mars 2020 mission Department of Geography Colloquium Series, University of Cincinnati.
  • Czaja, A.D. (2017). Mission to Mars: the landing site selection process for the Mars 2020 mission College of Arts & Sciences, Dean’s Advisory Board Meeting , University of Cincinnati.
  • Czaja, A.D. (2017). Micron-scale organic geochemical and fluorescence imaging of Earth's most ancient life UC School of Design, Art, Architecture, and Planning, Architecture colloquium, University of Cincinnati.
  • Czaja, A.D. (2017). Sulfur oxidation, biodiversity, and oxygenation in the Archean Department of Earth and Planetary Sciences, Geobiology Seminar, Harvard University.
  • Czaja, A.D. (2016). Life in the Archean: Increasing the diversity Department of Geological Sciences Colloquium, Ohio University.
  • Czaja, A.D. (2016). Life in the Archean: Increasing the diversity Department of Geology, Palmer Lecture Series, Kent State University.
  • Czaja, A.D. (2015). Life in the Archean: Increasing the diversity School of Geosciences Colloquium, University of South Florida.
  • Czaja, A.D. (2014). Possible large planktonic fossil microbes preserved in Neoarchean deep water sediments Department of Geosciences Colloquium, Virginia Tech.
  • Czaja, A.D. (2013). Geochemical and paleontological evidence for photosynthesis on the early Earth Microbial Diversity Summer Course, Marine Biological Lab, Woods Hole, MA.
  • Czaja, A.D. (2013). Micron-scale organic geochemical and morphological analyses of Earth's ancient biosphere School of Energy, Environment, Biological and Medical Engineering Colloquium, University of Cincinnati.
  • Czaja, A.D., Johnson, C.M., Roden, E.E., Beard, B.L., Voegelin, A.R., Nägler, T.F., Beukes, N.J., and Wille, M. (2011). Evidence for significant free oxygen in the ocean prior to the Paleoproterozoic Great Oxidation Event Department of Earth and Environmental Sciences Colloquium, University of Illinois, Chicago.
  • Czaja, A.D., Johnson, C.M., Roden, E.E., Beard, B.L., Voegelin, A.R., Nägler, T.F., Beukes, N.J., and Wille, M. (2011). Evidence for significant free oxygen in the ocean prior to the ~2.4 Ga Great Oxidation Event Deparment of Geoscience Weeks Lecture, University of Wisconsin, Madison.
  • Czaja, A.D., Johnson, C.M., Roden, E.E., Beard, B.L., Voegelin, A.R., Nägler, T.F., Beukes, N.J., and Wille, M. (2011). Evidence for free oxygen in the Neoarchean ocean Gordon Research Conference on Geobiology, Ventura, CA.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., Eigenbrode, J.L., Freeman, K.H., and Yamaguchi, K.E. (2009). Iron and carbon isotope evidence for ecosystem and environmental diversity in the ~2.7 to 2.5 Ga Hamersley Province, Western Australia Department of Geosciences Colloquium, University of Wisconsin–Milwaukee.
  • Czaja, A.D., Kudryavtsev, A.B., Cody, G.D., and Schopf, J.W. (2006). Understanding the paleobiological afterlife: a modern approach to an ancient problem Division of Geological and Planetary Science GeoClub Seminar, California Insitute of Technology.
  • Czaja, A.D., Kudryavtsev, A.B., Cody, G.D., and Schopf, J. W. (2006). Understanding the paleobiological afterlife: a spectroscopic comparison of modern and permineralized plant axes Carnegie Institution of Washington, Washinton, D.C..
  • Czaja, A.D., Cody, G.D., and Schopf, J.W. (2004). Illuminating the black box that is fossil kerogen NASA Astrobiology Institute Forum for Astrobiological Research seminar series, Los Angeles, CA.

Paper Presentations

  • Czaja, A.D. (2018). Searching for signs of life: Morphological and geochemical biosignatures on Earth (and Mars?). Gordon Research Conference on Geobiology, Galveston, TX.
  • Czaja, A.D. and Riedman, L.A. (2016). Mineralogical control on apparent thermal alteration of ancient organic matter as measured by Raman spectroscopy. Geological Society of America Annual Meeting, Denver, CO.
  • Czaja, A.D., Osterhout, J.T., and Beukes, N.J. (2015). Exceptionally large Neoarchean spheroidal microfossils from South Africa: possible contributors to the GOE. Geological Society of America Annual Meeting, Baltimore, MD.
  • Czaja, A.D., and Lorber, K.N. (2014). In situ Raman spectroscopy and confocal microscopy of 2.5 billion-year-old fossil microorganisms: viable nondestructive techniques for the study of returned Martian samples. American Geophysical Union Fall Meeting, San Francisco, CA.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., Roden, E.E., Li, W., and Moorbath, S. (2013). Anoxygenic photosynthesis recorded in 3.8 Ga BIFs of the Isua Supracrustal Belt. NASA Astrobiology Institute Early Earth Focus Group, Workshop without Walls.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., and Moorbath, S. (2012). Early Archean Fe oxidation revealed by meso- and micron-scale Fe isotope analyses of the 3.7–3.8 Ga Isua BIFs. V.M. Goldschmidt Conference, Montreal, Quebec, Canada.
  • Czaja, A.D., Johnson, C.M., and Beard, B.L. (2012). Meso- and micron-scale Fe isotope analyses of the 3.7–3.8 Ga Isua BIFs reveal Early Archean Fe oxidation. NASA Astrobiology Science Conference, Atlanta, GA.
  • Czaja, A.D., Johnson, C.M., Roden, E.E., Beard, B.L., Voegelin, A.R., Nagler, T.F., Beukes, N.J., and Wille, M. (2011). Evidence for free oxygen in the Neoarchean ocean based on coupled iron–molybdenum isotope fractionation. American Geophysical Union Fall Meeting, San Francisco, CA.
  • Czaja, A.D., Johnson, C.M., Roden, E.E., Beard, B.L., Voegelin, A.R., Nagler, T.F., Beukes, N.J., and Wille, M. (2011). Evidence for free oxygen in the Neoarchean ocean. Gordon Research Conference on Geobiology, Ventura, CA.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., and Van Kranendonk, M.J. (2010). Iron isotopes reveal an abiological origin for a 2.75 Ga BIF from the Yilgarn Craton, Western Australia . V.M. Goldschmidt Conference, Knoxville, TN.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., Eigenbrode, J.L., Freeman, K.H., and Yamaguchi, K.E. (2010). Iron and carbon isotope evidence for ecosystem and environmental diversity in the ~2.7 to 2.5 Ga Hamersley Province, Western Australia. NASA Astrobiology Science Conference, League City, TX.
  • Czaja, A.D., Johnson, C.M., Beard, B.L., Eigenbrode, J.L., Freeman, K.H., and Yamaguchi, K.E. (2010). Iron and carbon isotope evidence for ecosystem and environmental diversity in the ~2.7 to 2.5 Ga Hamersley Province, Western Australia. Geological Society of America Annual Meeting, Portland, OR.
  • Czaja, A.D., Kudryavtsev, A.B., Cody, G.D., and Schopf, J.W. (2007). Comparison of fossil fern kerogen from two Eocene cherts. Geological Society of America Annual Meeting, Denver, CO.
  • Czaja AD, Kudryavtsev AB, Cody GD, and Schopf JW (2007). Fine-scale analysis of permineralized kerogen. Astrobiology Graduate Conference, San Juan, Puerto Rico.
  • Czaja AD (2006). Raman spectroscopic analysis of permineralized organic-walled fossils, Eocene to Archean. Southern California Geobiology Symposium, University of California, Riverside, CA.
  • Czaja AD, Kudryavtsev AB, and Cody GD (2005). Toward a better understanding of the paleontological afterlife: a spectroscopic comparison of modern and permineralized plant axes. Geological Society of America Annual Meeting, Salt Lake City, UT.
  • Czaja AD, (2005). Fossil organic matter: a better understanding of its history. Astrobiology Graduate Conference, Scripps Institution of Oceanography, La Jolla, CA.
  • Czaja AD, Cody GD, Kudryavtsev AB, and Schopf JW (2004). Turning ferns into fossils: biogeochemical alchemy. Geological Society of America Annual Meeting, Denver, CO.
  • Van Kranendonk M, Baumgartner R, Boyd E, Cady S, Campbell K, Czaja A, Damer B, Deamer D, Djokic T, Fiorentini M, Gangidine A, Havig J, Mulkidjanian A, Ruff S, Thordarson P (2018). Terrestrial hot springs and the origin of life: Implications for the search for life beyond Earth. 49th Lunar and Planetary Science Conference, The Woodlands, TX.
  • Porter S, Riedman LA, Czaja AD, Calver C (2017). Early Neoproterozoic biostratigraphy: life before the Cryogenian glaciations. International Meeting of Sedimentology, Toulouse, France.
  • Returned Sample Science Board (Carrier BL, Beaty DW, McSween HY, Czaja AD, Goreva YS, Hausrath EM, Herd CDK, Humayun M, McCubbin FM, McLennan SM, Pratt LM, Sephton MA, Steele A, and Weiss BP) (2017). Strategies for investigating early Mars using returned samples. 4th International Conference on Early Mars, Flagstaff, AZ.
  • Smith AJB, Beukes NJ, Gutzmer J, Johnson CM, Czaja AD, and De Beer FC (2017). Insights into oncoidal morphology and sedimentology of a Mesoarchean granular iron formation from southern Africa using 3D X-ray computed tomography (µXCT). V.M. Goldschmidt Conference, Paris, France.
  • Farley KA, Williford KH, Beaty DW, McSween HY, Czaja AD, Goreva YS, Hausrath EM, Hays LE, Herd CDK, Humayun M, McCubbin FM, McLennan SM, Pratt LM, Sephton MA, Steele A, and Weiss BP (2017). Contamination knowledge strategy for the Mars 2020 sample-collecting rover. 48th Lunar and Planetary Science Conference, The Woodlands, TX.
  • Beaty DW, Weiss BP, McSween HY, Czaja AD, Goreva YS, Hausrath EM, Herd CDK, Humayun M, McCubbin FM, McLennan SM, Pratt LM, Sephton MA, Steele A, Hays LE, and Meyer MA (2016). Planning for the Paleomagnetic Investigations of Returned Samples from Mars. American Geophysical Union Fall Meeting, San Francisco, CA.
  • Beaty DW, McSween HY, Czaja AD, Goreva YS, Hausrath EM, Herd CDK, Humayun M, McCubbin FM, McLennan SM, Pratt LM, Sephton MA, Steele A, Weiss BP and Hays LE (2016). Planning for the collection of a compelling set of Mars samples in support of a potential future Mars sample return. Geological Society of America Annual Meeting, Denver, CO.
  • Beaty DW, McSween HY, Czaja AD, Goreva YS, Hausrath EM, Herd CDK, Humayun M, McCubbin FM, McLennan SM, Pratt LM, Sephton MA, Steele A, Weiss BP and Hays LE (2016). Recommended maximum temperature for Mars returned samples. 47th Lunar and Planetary Science Conference, The Woodlands, TX.
  • Gangidine AJ, Czaja AD, Havig JR (2018). Developing a trace element biosignature for early Earth and Mars. 2nd International Mars Sample Return Conference, Berlin, Germany.
  • Osterhout JT and Czaja AD (2017). Stable isotope geochemistry of a late Archean microbial ecosystem: Diversity in the pre-GOE oceans. Geological Society of America Annual Meeting, Seattle, WA.
  • Gangidine AJ, Czaja AD, and Havig J (2017). A novel trace element biosignature for life on early Earth and Mars. NASA Astrobiology Science Conference, Mesa, AZ.
  • Manning-Berg AR, Tuite M, Williford K, Czaja AD, and Kah LC (2017). Exceptional preservation of biomarkers in the 1.2 Ga Angmaat Formation chert, Bylot Supergroup, Baffin Island. NASA Astrobiology Science Conference, Mesa, AZ.
  • Osterhout JT, Czaja AD, and Beukes NJ (2015). Isotopic evidence of photoautotrophy in an open marine ecosystem preceding the Great Oxygenation Event. Geological Society of America Annual Meeting, Baltimore, MD.
  • Lorber KN, Czaja AD, and Beukes NJ (2015). Geochemical analysis of 2.5 billion-year-old microfossils exhibiting varying degrees of preservation. Fourth Annual Midwest Geobiology Symposium, Bloomington, IN.
  • Osterhout JT, Czaja AD, and Fralick, PW (2015). Organic geochemistry of stromatolites in a 1.4 billion-year-old evaporitic lacustrine ecosystem. Fourth Annual Midwest Geobiology Symposium, Bloomington, IN.
  • Lorber KN, Czaja AD, and Beukes NJ (2015). Preservational variations of 2.5 billion-year-old filamentous microfossils from the Gamohaan Formation of South Africa. NASA Astrobiology Science Conference, Chicago, IL.
  • Osterhout JT, Czaja AD, and Beukes NJ (2015). Morphological and geochemical diversity of deep water microfossils from the 2.52 Ga-old Gamohaan Formation, South Africa. NASA Astrobiology Science Conference, Chicago, IL.
  • Czaja AD, Kudryavtsev AB, Cody GD, and Schopf JW (2008). Similar fossil ferns having dissimilar organic geochemical preservation. V.M. Goldschmidt Conference, Vancouver, Canada.

Poster Presentations

  • Czaja AD, Osterhout, JT, and Gangidine, AJ (2018). Mineralogical control of organic matter thermal alteration: Implications for biosignature preservation in returned martian samples 2nd International Mars Sample Return Conference, Berlin, Germany.
  • Perfetta C, Czaja AD, and Lentz D (2017). Contaminated water and the collapse of the ancient Maya: Microbiome analyses of reservoir sediments from Tikal Undergraduate Research Forum, University of Cincinnati.
  • Gangidine AJ, Czaja AD, and Havig J (2016). Developing a trace element biosignature in modern and ancient silica deposits – implications for the search for ancient life on Mars Fifth Annual Midwest Geobiology Symposium, Cincinnati, OH.
  • Vrazo MB, Diefendorf AF, Crowley BE, and Czaja AD (2016). Late Cretaceous marine arthropods relied on terrestrial organic matter as a food source: geochemical evidence from the Coon Creek lagerstätte in the Mississippian embayment Geological Society of America Annual Meeting, Denver, CO.
  • Lorber KN, Czaja AD, and Lee P (2016). Variations in Biosignature Preservation: Geochemical Analysis of Kerogen Comparing Two Mars Analog Environments Biosignature Preservation and Detection in Mars Analog Environments Conference, Lake Tahoe, NV.
  • Osterhout JT and Czaja AD (2016). Organic geochemistry of a 1.4-billion-year-old evaporitic lake: insights for the Mars 2020 SHERLOC instrument Biosignature Preservation and Detection in Mars Analog Environments Conference, Lake Tahoe, NV.
  • Holbrook C, Czaja AD, and Boolchand P (2015). Topological phases in modified oxides 14th International Conference on the Physics of Non-Crystalline Solids, Niagra Falls, NY.
  • Holbrook C, Boolchand P, and Czaja AD (2015). Onset of rigidity and thresholds in physical properties of barium-borate glasses XXIV International Materials Research Congress, Cancun, Mexico.
  • Holbrook C, Boolchand P, and Czaja AD (2015). Topological phases in Ba-borate glasses American Physical Society March Meeting, San Antonio, TX.
  • Czaja AD, Osterhout JT, and Beukes NJ (2015). Fossil evidence of possible contributors to the Great Oxidation Event: Exceptionally large Neoarchean microfossils from South Africa Fourth Annual Midwest Geobiology Symposium, Bloomington, IN.
  • Czaja AD, Osterhout JT, and Beukes NJ (2015). Large planktonic microfossils preserved in a deep water facies of the 2.52-Ga-old Gamohaan Formation, South Africa NASA Astrobiology Science Conference, Chicago, IL.
  • Czaja AD, Lorber KN, Beukes NJ (2014). Filamentous microfossils from the Neoarchean Gamohaan Formation of South Africa: Implications for the history of photoautotrophy Origins2014 Meeting, Nara, Japan.
  • Lorber KN, and Czaja AD (2014). Investigation of Archean microfossil preservation for defining science objectives for Mars sample return missions American Geophysical Union Fall Meeting, San Francisco, CA.
  • Lorber KN, and Czaja AD (2014). Current and future technologies employed in the search for Precambrian fossils with possible implications for astrobiology Gordon Research Conference on the Origin of Life, Galveston, TX.
  • Zambito JJ IV, Benison KC, Czaja AD, and Lorber KN (2013). Possibly ubiquitous preservation of microbes in Permian halite Geological Society of America Annual Meeting, Denver, CO.
  • Czaja AD, Johnson CM, Beard BL, and Van Kranendonk MJ (2010). Iron isotope evidence for an abiological origin of a BIF from the Yilgarn Craton, Western Australia 5th International Archean Symposium, Perth, Western Australia.
  • Czaja AD, Kudryavtsev AB, Cody GD, and Schopf JW (2008). Geochemical characterization of permineralized kerogen: similar fossils having dissimilar degrees of preservation NASA Astrobiology Science Conference, San Jose, CA.
  • Czaja AD and Kudryavtsev AB (2006). Raman spectroscopic characterization of the thermal history of permineralized fossils NASA Astrobiology Science Conference, Washington, DC.
  • Czaja AD (2006). Spectroscopic analysis of the thermal alteration of permineralized organic matter 11th International Society for the Study of the Origin of Life Meeting, Tsinghua University, Beijing, PRC.
  • Czaja AD, Kudryavtsev AB, and Cody GD (2005). Raman spectroscopic analysis of the thermal alteration of permineralized organic matter NASA Astrobiology Institute Conference, Boulder, CO.
  • Czaja AD, Cody GD, and Schopf JW (2004). Turning ferns into fossils: biogeochemical alchemy Astrobiology Science Conference, Moffett Field, CA.
  • Czaja AD, Schopf JW, Storrie-Lombardi MC, and Cody GD (2003). Multi-spectra analysis of geochemical alteration through natural and artificial fossilization NASA Astrobiology Institute Conference, Tempe, AZ.
  • Czaja AD, Schopf JW, Storrie-Lombardi MC, Kudryavtsev AB, and Bhartia R (2002). Laser Raman spectroscopic analysis of chemical changes caused by fossilization 10th International Society for the Study of the Origin of Life Meeting, Oaxaca, Mexico.
  • Czaja AD, Schopf JW, Storrie-Lombardi MC, Kudryavtsev AB, and Bhartia R (2002). Laser Raman spectroscopic analysis of biochemical changes caused by fossilization Astrobiology Science Conference, Moffett Field, CA.

Honors & Awards

  • Lewis and Clark Field Scholar in Astrobiology,, American Philosophical Society, 2010.
  • Dissertation Year Fellowship,, University of California, Los Angeles, 2005.
  • Eugene Waggoner Scholarship for Sustained Academic Achievement,, UCLA, Department of Earth and Space Sciences, 2005.
  • Student Research Grant,, Geological Society of America, 2004.
  • Grant-in-Aid of Research,, Sigma Xi, 2002.
  • Graduate Research Fellowship,, National Science Foundation, 2000 to 2003.
  • National Defense Science and Engineering Graduate Fellowship (declined), 2000.
  • Center for the Study of Evolution and the Origin of Life Fellowship,, Institute of Geophysics and Planetary Physics, UCLA, 2000 to 2002.
  • Outstanding Undergraduate Researcher of the Year,, University of Connecticut, Department of Ecology & Evolutionary Biology, 1999.
  • Phi Beta Kappa, Inducted into Epsilon of Connecticut Chapter, 1997.

Experience & Service

Work Experience

  • 2012 to Present, Assistant Professor, University of Cincinnati, Dept. of Geology, Cincinnati, OH.
  • 2008 to 2012, Postdoctoral Research Associate, University of Wisconsin, Madison, Dept. of Geoscience, Madison, WI.
  • 2007Lecturer, University of California, Los Angeles, Dept. of Earth, Planetary, and Space Sciences, Los Angeles, CA.
  • 2006 to 2007, Lecturer, California State University, Fullerton, Dept. of Geological Sciences, Fullerton, CA.