• Daniel Lehrmann is the Gertrude and Walter Pyron Professor in the Geosciences Department at Trinity University, where he teaches courses in paleontology and sedimentary geology. He is originally from Wisconsin where he received his bachelor's degree in geology from the University of Wisconsin Oshkosh and his master's degree in geology from the University of Wisconsin-Madison. He received his Ph.D. from the University of Kansas.

    His research focuses on the factors controlling the evolution of marine sedimentary basins, the evolution of carbonate platforms and tropical reefs, changes in Earth’s chemical and biological systems, diagenetic alteration of carbonate sediments, and major events in the history of life such as the end-Permian mass extinction.

    Techniques employed include field work, satellite image analysis, GIS, petrography including fluid inclusion geothermometry, CL and point counting, geochemistry, biostratigraphy, paleoecology, database assembly, forward stratigraphic modeling, and statistical analysis.

    Much of this research has focused on the factors controlling basin and carbonate platform evolution in the Nanpanjiang Basin of south China, but has also included studies of additional basins in north China and in sedimentary systems from numerous localities around the world such as Indonesia, Japan, Turkey, Saudi Arabia, Italy, Mexico, and the Gulf of Mexico. 

    Recent studies in central and western Texas include sedimentologic and geochemical studies of microbial carbonate reefs in the Cambrian Wilberns Formation, analysis of the geochemistry and sedimentology of Dinosaur Track sites in the Lower Cretaceous Glen Rose Formation, and sedimentology and stratigraphy of the Upper Cretaceous Eagle Ford Formation.

    Through research collaborations Lehrmann has co-advised graduate students at Rice University, Stanford University, the University of Alabama, and the University of Texas at San Antonio.

    • Ph.D. in Geology, University of Kansas
    • M.S. in Geology, University of Wisconsin, Madison
    • B.S. in Geology, University of Wisconsin, Oshkosh
    • Lehrmann D. J., Minzoni M., Enos P., Kelleher C*., Stepchinski L.*, Li X., Payne J. L., Yu M., 2020, Giant sector‐collapse structures (scalloped margins) of the Yangtze Platform and Great Bank of Guizhou, China: Implications for genesis of collapsed carbonate platform margin systems: Sedimentology, https://doi.org/10.1111/sed.12740.
    • Kelley, B.M., Lehrmann, D. J., Yu, M., Jost, A. B., Meyer, K. M., Lau, K. V., Altiner, D., Li X., Minzoni, M., Schaal, E., and Payne, J. L., 2020, Controls on carbonate platform architecture across the Paleozoic-Mesozoic transition:  a high-resolution analysis of the Great Bank of Guizhou: Sedimentology, v 67, n. 6, p. 3119-3151.
    • Lehrmann D. J., Droxler A. W., Harris P. M., Minzoni M., Droxler, D.*, Hopson H. H.*, Kelleher C.*, Proctor J. P., Khanna P., Lehrmann A. A.*, Lhemann, A.*, Mabry G.*, Mercado L.*, Proctor J. M., Singh P., Yazbek L.*, 2020, Controls on Microbial, Oolitic and Associated Carbonate Sedimentation and Stratigraphic Cyclicity Within a Mixed Carbonate Siliciclastic System: Upper Cambrian Wilberns Formation, Llano Area of Central Texas. The Depositional Record, v. 6, n. 2, p. 274-485.
    • Khanna P., Hopson, H. H., Droxler A. W., Droxler D. A.*, Lehrmann, D., Kubik, B., Proctor, J., Singh P., Harris, P. M., 2020, Late Cambrian microbial build‐ups, Llano Area, Central Texas: A three‐phase morphological evolution: Sedimentology, v. 67, n. 2, p. 1135-1160. 
    • Khanna, P., Pyrcz, M., Droxler, A. W., Hopson, H.H.*, Harris, H. M., Lehrmann, D. J., 2020; Implications for controls on Upper Cambrian microbial build-ups across multiple-scales, Mason County, Central Texas, USA: Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2020.104590.
    • Koeshidayatullah, A., Morsill, M., Lehrmann, D. J., Al-Ramadan, K., Payne, J. L., 2020, Fully Automated Carbonate Petrography Using Deep Convolutional Neural Networks: Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2020.104687
    • Li, X,  Trower, E. J., Lehrmann, D. J., Minzoni, M., Kelley, B. M., Schaal, E. K., Altiner, D., Yu, M., Payne, J. L., 2020, Implications of Giant Ooids for the Carbonate Chemistry of Early Triassic Oceans: Geology, https://doi.org/10.1130/G47655.1
    • Li, X.,  Falivene, O., Minzoni, M., Lehrmann, D. J., Reijmer, J. G., Morsilli, M., Al-Ramadan,K. A. H.,  Yu, M., Payne, J. L., 2020, Interactions between sediment production and transport in the geometry of carbonate platforms: Insights from forward modeling of the Great Bank of Guizhou (Early to Middle Triassic), south China: Marine and Petroleum Geology, Volume 118,  doi.org/10.1016/j.marpetgeo.2020.104416.
    • Ferrill, D. A., Evans, M. A., McGinnis, R. N., Morris, A. P., Smart, K. J., Lehrmann, D., Gulliver, K. D. H.*, Sickmann, Z.*, 2020, Fault zone processes and fluid history in Austin Chalk, southwest Texas. American Association of Petroleum Geologists Bulletin, AAPG Bulletin, v. 104, n. 2, p. 245-283.
    • Foster, W. J., Heindel, K., Richoz, S., Gliwa, J., Lehrmann, D. J., Baud, A., Kolar-Jurkovšek, T., Aljinovic, D., Jurkovšek, B., Korn, D., Martindale, R. C., Peckmann, J., 2020, Suppressed competitive exclusion led to the proliferation of Permian/Triassic boundary microbialites: The Depositional Record.  Depositional Record, v. 6, n. 1, p. 62-74.
    • Lehrmann, D. J., Wan Yang, Sickmann, Z. T.*, Ferrill, D. A., McGinnis, R. N., Morris, A. P., Smart, K. J., and Gulliver, K. D. H.*, 2019, Controls on sedimentation and cyclicity of the Boquillas and equivalent eagle ford formation from detailed outcrop studies of western and central Texas, U.S.A: Journal of Sedimentary Research, v. 89, n. 7. p. 629-653
    • Lehrmann, A. A.*, Blake, E.*, Sun, K.*, Welch, B., Ray, C. J., Adams, T., Suarez, M. B., Godet, A., Ferrill, D. A., McGinnis, R. N., Lehrmann, D. J., 2019, Geochemistry and environmental analysis of a Lower Cretaceous dinosaur track site, Heritage Museum of the Texas Hill Country, Comal county, central Texas:  South Texas Geological Society Bulletin, v. 60, n. 3, p. 13-26.
    • Foster, W. J., Lehrmann, D. J., Hirtz, J. A., White, M., Yu, M., Li, J., Martindale, R. C., 2019, Early Triassic benthic invertebrates from the Great Bank of Guizhou, South China: systematic palaeontology and palaeobiology: Papers in Palaeontology, v. 5, n. 4, p. 613-656.

    • Foster, W. J., Lehrmann, Yu, M., Martindale, R. C., 2019, Facies selectivity of benthic invertebrates in a Permian/Triassic boundary microbialite succession: Implications for the “microbialite refuge” hypothesis: Geobiology, v. 17, n. 5, p. 523-525.
    • Khanna, P., Droxler, A. W., Hopson, H. H.*, Kubik, B., Proctor , J., Singh, P., Trotta, R., Zhou, Y., Droxler, D.*, Lehrmann, D. J., Harris, P. M., 2019,   Regional and Local Occurrence of Upper Cambrian Microbial Buildups, Llano area central Texas:  A 3 Phase Morphological Evolution: Sedimentology, v. 67, n. 2, p. 1135-1160.
    • Proctor, J., Droxler, A., Derzhi, N., Hopson, H., Harris, P. M., Khanna, P., Lehrmann, D.,   2019, Upscaling Lithology and Porosity Types from the Microscope to the Core with Thin Section Petrography, Dual Energy CT, and Rock Types: Creation of Diagenesis and Porosity Type Logs: Interpretation,  v. 7, n. 1, p. 1-61. http://dx.doi.org/10.1190/INT-2017-0187.1.
    • Silva-Tamayo, J. C., Lau, K. V., Jost, A. B., Payne, J. L., Wignall, P. B., Newton, R. J., Eisenhauser, A., Depaolo, D. J., Brown, S., Maher, K., Lehrmann, D. J., Altiner, D., Yu, M., Richoz, S., Paytan, A., 2018, Global perturbation of the marine calcium cycle during the Permian-Triassic transition: Geological Society of America Bulletin · January 2018 DOI: 10.1130/B31818.1
    • Foster, W. J., Lehrmann D. J., Martindale, R. C., 2018, Persistent environmental stress delayed the recovery of marine communities in the aftermath of the latest Permian mass extinction: Paleoceanography and Paleoclimatology (A.G.U.), v. 33, n. 4, p. 338-353, DOI: 10.1002/2018pa003328.
    • Li, Rongxi; Liu, Futian; Li, Sanzhong; Xi , Shengli; Lehrmann D. J., 2018, Magmatic Activities and Their Impacts on Oil/gas Formation in the Southwestern Ordos Basin, Central China: Geological Journal, v. 53, n. 51, p. 178-189.
    • Ferrill, D.A., McGinnis, R.N., Morris, A.P., Smart, K.J., Gulliver, K.D.H.*, Lehrmann, D., Evans, M.A., 2017, Mechanical stratigraphic and tectonic controls on natural fracturing in the Eagle Ford Formation, south-central and West Texas.  Gulf Coast Association of Geological Societies Transactions, v. 67, p. 121–131.
    • Lau, K. V., Maher, K., Brown, S., Silva-Tamayo, J. Altiner, D., DePaolo, D. J., Eisenhauer, A., Jost, A. B., Kelley, B. M., Kump, L. R., Lehrmann, D. J., Paytan, A. Yu, M., Payne, J. L., 2017: The influence of diagenesis, mineralogy, and seawater changes on calcium isotope variations in Lower-Middle Triassic carbonate rocks: Chemical Geology, v. 471, p. 13-37.
    • Kelley, B. M., Lehrmann, D. J., Yu, M., Minzoini, M., Enos, P., Li, X., Payne, J. L., 2017, The Late Permian to Late Triassic Great Bank of Guizhou (GBG): An Isolated Carbonate Platform in the Nanpanjiang Basin, Guizhou Province, China:  AAPG Centenial Outcrop Volume, American Association of Petroleum Geologists, Bulletin, v. 101, no. 4, p. 553–562.
    • McGinnis, R. Ferrill, D., Morris, A. P., Wigginton, S. W.*, Smart, K. J., McGinnis, R. N.,  Lehrmann, D. J., 2017,  Mechanical Stratigraphic Controls on Natural Fracture Spacing and Penetration: Journal of Structural Geology: v. 95, p. 160-170. 
    • Ferrill, D., McGinnis, R. N., Morris, A. P., Smart, K. J., Wigginton, S. W.*, Gulliver, K.D.*, Lehrmann, D. J., DeZoeten, E.*, Sickmann, Z.*, 2017, Fault zone processes in mechanically layered mudrock and chalk: Journal of Structural Geology: v. 97, p. 118-143.
    • Lehrmann, D.J., Bentz, J. M.*, Wood,. T.*, Goers, A.*, Dhillon, R.*, Akin, S.*, Li, X.,  Kelley, B. M., Meyer, K. M., , Schaall, E. K., Payne, J. L., , Suarez, M. B., Yu, M., Qin, Y., Li, R., Minzoni, M., and Henderson, C., 2016, Reply: Permian-Triassic microbialite and dissolution surface associated with the end-Permian mass extinction: new sections and observations from the Nanpanjiang Basin, south China:  Paleios, v. 31, n. 1-4, p. 118-121.
    • Lau, K. V., Maher, K., Altiner, D., Kelley, B. M., Kump, L. R., Lehrmann, D., J., Silva-Tamayo, J. C., Weaver, K., L., Maher, K., Payne, J. L., 2016, Marine anoxia and delayed Earth system recovery after the end-Permian extinction: Publication of the National Academy of Sciences: vol. 113 no. 9, p. 2360–2365, doi:10.1073/pnas.1515080113.
    • Ferrill, D., Morris, A. P., Wigginton, S. W.*,  Smart, K. J.,  McGinnis, R. N.,  Lehrmann, D. J., 2016, Deciphering thrust fault nucleation and propagation and the importance of footwall synclines: Journal of Structural Geology. V. 85, p. 1-11.
    • Lehrmann, D. J.,  Chaikin, D. H., Enos, P., Minzoni, M., Payne, J., Yu, M., Richter, P.*, Goers, A.*, Wood, T.*, Kelley, B., Li, X., Qin, Y., Liu, L., Lu, G., 2016, Basin filling Patterns of Triassic Turbidites in the Nanpanjiang Basin of South China: Implications for Tectonics and Impacts on Carbonate Platform Evolution: Basin Research,  v. 27, p. 587-612.
    • Lehrmann, D. J., Stepchinski, L.*, Altiner, D., Orchard M., Montgomery, P., Enos P., Ellwood, B., Bowring, S, Ramezani J., Wang,. H.,  Wei, J., Yu, M., Griffiths, J., Minzoni, M., Schaal, E., Li, X., Meyer, K., Payne, J., 2015, An integrated biostratigraphy (conodonts and foraminifers) and chronostratigraphy (paleomagnetic reversals, magnetic susceptibility, elemental chemistry, carbon isotopes and geochronology) for the Permian-Upper Triassic strata of Guandao section, Nanpanjiang Basin, south China:  Journal of Asian Earth Sciences, v. 108, p. 117-135.
    • Lehrmann, D.J., Bentz, J. M.*, Wood,. T.*, Goers, A.*, Dhillon, R.*, Akin, S.*, Li, X.,  Kelley, B. M., , Meyer, K. M., , Schaall, E. K., Payne, J. L., , Suarez, M. B., Yu, M., Qin, Y., Li, R., Minzoni, M., and Henderson, C., 2015, Environmental Controls on the Genesis of Marine Microbialites and Dissolution Surface Associated with the End-Permian Mass Extinction: New Sections and Observations from the Nanpanjiang Basin, South China: Palaios, v. 30, p. 529-552.
    • Minzoni, M., Lehrmann, D. J., Dezoeten, E.*, Enos, P., Montgomery, P., Berry, A., Qin, Y., Yu M., Ellwood, B., Payne, J., 2015, Drowning of the Triassic Yangtze Platform, south China by tectonic subsidence into toxic deep waters of an anoxic basin: Journal of Sedimentary Research, V. 85, P. 419-444.
    • Yang Z, Li, M.,Ogg, J. G., Montgomery, P., Huang, C., Chen, Z. Q., Shi, Z., Enos, P., Lehrmann, D. J., 2015, Cycle calibrated magnetostratigraphy of the Middle Carnian of south China: Implications for Late Triassic time scale and termination of the Yangtze Platform: Palaeogeography, Palaeoclimatology, Palaeoecology: V. 436, p. 135-166
    • Ferrill, D. A., McGinnis, R. N., Morris, A. P., Smart, K. J., Sickmann, Z.*, Bentz, J., M.*, Lehrmann, D., Evans, M. A., 2014, Control of Mechanical Stratigraphy on Bed-Restricted Jointing and Normal Faulting: Eagle Ford Formation, South-Central Texas, U.S.A: American Association of Petroleum Geologists Bulletin, v. 98, p. 2477-2506.
    • Yang W. and Lehrmann, D. J., 2014, Peritidal carbonate cycles induced by carbonate productivity variations –a conceptual model for an Early Triassic greenhouse platform, the Great Bank of Guizhou, south China: Journal of Paleogeography, c. 3, n. 2, p. 115-126.
    • Minzoni, M., Lehrmann, D. J., Payne, J., Enos, P., Yu, M., Wei, J., Kelley, B., Li, X., Schaal, E., Meyer, K., Montgomery, P., Goers, A.*, Wood, T.*, 2013, Triassic Tank: Platform margin and slope architecture in space and time, Nanpanjiang Basin, south China, in Playton, T., Harris, M., and Verwer, K., eds. Deposits, Architecture and Controls of Carbonate Margin, Slope, and Basinal Settings: SEPM special publication, No. 105, p. 84-113. 
    • Li R., Dong, S., Lehrmann, D., and Duan, L., 2013, Tectonically driven organic fluid migration in the Dabashan foreland belt: evidenced by geochemistry and geothermometry of fibrous calcite veins with organic inclusions: Journal of Asian Earth Sciences, v. 75, p. 202-212.
    • Meyer, K. M., Yu, M., Lehrmann, D., van de Schootbrugge, and Payne, J. L., 2013, Constraints on Early Triassic carbon cycle dynamics from paired organic and inorganic carbon isotope records, Earth and Planetary Science Letters. V. 361, p. 429-435.
    • Lehrmann, D., J., Minzoni, M., Payne, J., Li, X., and Yu, M., 2012, Lower Triassic Oolites of the Nanpanjiang Basin: controls on facies architecture, giant ooids, marine cements and implications for hydrocarbon reservoirs: American Association of Petroleum Geologists, Bulletin: , v. 96, n. 8, p. 1389-1414.
    • Li X., Yu, M., Lehrmann, D.J., Payne, J.L., Kelley, B.M., and Minzoni, M., 2012. Factors controlling carbonate platform asymmetry: Preliminary results from the Great Bank of Guizhou, an isolated Permian–Triassic platform in the Nanpanjiang basin, south China: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 315-316, p. 158-171.
    • Payne, J. L, Summers, M. Rego, B. L.,  Altiner, D., Wei, J., Yu, M., and Lehrmann, D. J., 2011, Early and Middle Triassic trends in diversity, evenness, and size of foraminifers on a carbonate platform in south China: implications for tempo and mode of biotic recovery from the end-Permian mass extinction: Paleobiology, v. 37, n. 3, p.  409–425.
    • Payne J.L., Turchyn A.V., Paytan A., DePaolo D.P., Lehrmann D.J., Yu Y., and Wei J., 2010, Calcium isotope constraints on the end-Permian mass extinction:  Proceedings of the National Academy of the United States of America v. 107, p.  8543-854.
    • History and Evolution of Life
    • Geology, Resources, and Environments of China
    • Paleontology
    • Basin Analysis
    • Field Geology of China

    Lehrmann’s research program has been continuously funded by external grants for more than 20 years. These grants totaling more than $2 million have been awarded by the National Science Foundation, The Petroleum Research Fund of the America Chemical Society, The Fulbright Program, and several oil companies.

    Prior to Joining Trinity in 2010, Lehrmann held an endowed professorship in international relations at the University of Wisconsin-Oshkosh. He has won a SEPM best paper award, honorable mention for best paper in Palaios, and has presented as distinguished lecturer at UT Austin.

    Lehrmann is associate editor for the Journal of Sedimentary Research and the Journal of Earth Sciences and Environment.  He is actively involved with local geological organizations such at the Southwest Research Institute, Edward Aquifer Authority, The University of Texas at San Antonio, Witte Museum, South Texas Geological Society, and the Society of Independent Professional Earth Scientists.  He regularly involves students in participation in geologic activities such the South Central section meeting of the Geological Society of America and the Texas Hydro-geo Workshop.  In 2017 he served as the field trip chair, chaired a technical session, and led a field trip for the South Central Section meeting of the Geological Society of America Meeting in San Antonio.   Lehrmann provides geologic support for Geo-Parks and UNESCO World Heritage sites in China. He frequently hosts Chinese professionals and students on research visits to the US.