Published or In Press:
Underlined: Principal Investigator
Bold: Lab Member at the time research was undertaken
Asterisk: Student or post-doc co-author at time of publication
2024
107. Hevia-Cruz, F.*, Sheldon, N.D., Hildenbrand, A., Hren, M.T., Marques, F.O., Carlut, J., Chabaux, F., 2024. Regional variations of the Azores high across glacial-interglacial timescales. Paleoceanography and Paleoclimatology 39, e2023PA004810. doi: 10.1029/2023PA004810
106. Howard, C.M.*, Sheldon, N.D., Smith, S.Y., Noffke, N., 2024. Interpreting an Archaean paleoenvironment through 3D imagery of microbialites. Geobiology 39, e12601. doi: 10.1111/gbi.12601
105. Stein, R.A., Sheldon, N.D., Smith, S.Y., 2024. Comparing methodologies for stomatal analyses in the context of elevated modern CO2. Life 14, 78. doi: 10.3390/life14010078
104. Hevia-Cruz, F.*, Hildenbrand, A., Sheldon, N.D., Hren, M.T., Zanon, V., Marques, F.O., Carlut, J., Chabaux, F., Haurine, F., 2024. Weathering pulses during glacial-interglacial transitions: insights from well-dated paleosols in the Azores volcanic province (Central North Atlantic). Quaternary Science Reviews 324, 108438. doi: 10.1016/j.quascirev.2023.108438
2023
103. CO2-PIP Consortium, 2023. Toward a Cenozoic history of atmospheric CO2. Science 382, adi5177. doi: 10.1126/science.adi5177
2022
102. Crawford, E.B.*, Arbic, B.K., Sheldon, N.D., Ansong, J.K., Timko, P.G., 2022. Investigating the behavior of mid-Archean tides and potential implications for biogeochemical cycling. Precambrian Research 380, 106799. doi: 10.1016/j.precamres.2022.106799
101. Michel, L.A., Sheldon, N.D., Myers, T.S., Tabor, N.J., 2022. Assessment of pretreatment methods on CIA-K and CALMAG indices and the effects on paleoprecipitation estimates. Palaeogeography, Palaeoclimatology, Palaeoecology 601, 111102. doi: 10.1016/j.palaeo.2022.111102
100. Dzombak, R.M.*, Sheldon, N.D., 2022. Terrestrial records of weathering indicate three billion years of dynamic equilibrium. Gondwana Research 109, 376-393. doi: 10.1016/j.gr.2022.05.009
99. Stein, R.A.*, Munson, J., Sheldon, N.D., 2022. Hands-on, virtual, environmental science modules: using stable carbon isotopes as forensic tools for students to understand environmental chemistry from their homes. Interdisciplinary Journal of Environmental and Science Education 18, e2283. doi: 10.21601/ijese/12036
98. Noffke, N., Beraldi-Campesi, H., Callefo, F., Carmona, N., Cuadrado, D.G., Hickman-Lewis, K., Homann, M., Mitchell, R., Sheldon, N.D., Westall, F., Xiao, S., 2022. Treatise online no. 162: Part B, Volume 2, Chapter 5: Microbially induced sedimentary structures (MISS). Link.
97. Gomes, M.L., Klatt, J.M.*, Dick, G.J., Grim, S.L.*, Rico, K.L.*, Medina, M.*, Ziebis, W., Kinsman-Costello, L., Sheldon, N.D. , Fike, D.A., 2022. Sedimentary pyrite sulfur isotope compositions preserve signatures of the surface microbial mat environment in sediments underlying low-oxygen cyanobacterial mats. Geobiology 20, 60-78. doi: 10.1111/gbi.12466
96. Gulbranson, E.L., Sheldon, N.D., Montanez, I.P., Tabor, N.J., McIntosh, J.A.*, 2022. Late Permian soil-forming paleoenvironments on Gondwana: a review. Palaeogeography, Palaeoclimatology, Palaeoecology 586, 110762. doi: 10.1016/j.palaeo.2021.110762
2021
95. Stein, R.A.*, Sheldon, N.D., Allen, S.E., Smith, M.E., Dzombak, R.M*., Jicha, B.R., 2021. Climate and ecology in the Rocky Mountain interior after the early Eocene Climatic Optimum. Climate of the Past 17, 2515-2536. doi: 10.5194/cp-17-2515-2021
94. Dzombak, R.M.*, Midttun, N.C.*, Stein, R.A.*, Sheldon, N.D., 2021. Incorporating lateral variability and extent of paleosols into proxy uncertainty. Palaeogeography, Palaeoclimatology, Palaeocology, 582. doi: 10.1016/j.palaeo.2021.110641.
93. Stein, R.A.*, Sheldon, N.D., Smith, S.Y., 2021. Pacific Northwest plants record multiannual atmosphere-ocean circulation patterns. JGR-Atmospheres, 16, e2021JD035454. doi: 10.1029/2021/JD035454
92. Gomes, M.L., Klatt, J.M., Dick, G.J., Grim, S.L.*, Rico, K.I.*, Medina, M.*, Ziebis, W., Kinsman-Costello, L., Sheldon, N.D., Fike, D.A., 2021. Sedimentary pyrite sulfur isotope compositions preserve signatures of the surface microbial mat environment in sediments underlying low-oxygen cyanobacterial mats. Geobiology (early view). doi: 10.1111/gbi.12466
91. Stein, R.A.*, Sheldon, N.D., Smith, S.Y., 2021. Soil carbon isotope values and paleoprecipitation reconstruction. Paleoceanography and Paleoclimatology, 36, e2020PA004158. doi: 10.1029/2020PA004158
90. Stein, R.A.*, Sheldon, N.D., Smith, S.Y., 2021. C3 plant carbon isotope discrimination does not respond to on decadal to centennial timescales. New Phytologist, 229, 2576-2585. doi: 10.1111/nph.17030
89. Sheldon, N.D., Mitchell, R.L., Dzombak, R.M.*, 2021. Reconstructing pCO2 and pO2 using paleosols. Cambridge Elements in Geochemical Tracers in Earth System Science. doi: 10.1017/9781108870962
2020
88. Dzombak, R.M.*, Sheldon, N.D.,, 2020. Weathering intensity and presence of vegetation are key controls on soil phosphorus concentrations: implications for past and future terrestrial ecosystems. Soil Systems, 4(4), 73. doi: 10.3390/soilsystems4040073
87. Dzombak, R.M.*, Sheldon, N.D., Mohabey, D.M., Samant, B., 2020. Stable climate in India during Deccan volcanism suggests limited influence on K-Pg extinction. Gondwana Research, 85, 19-31. doi: 10.116/j.gr.2020.04.007
86. Rico, K.I.*, Sheldon, N.D., Kinsman-Costello, L.E., 2020. Associations between redox-sensitive trace metals and microbial communities in a Proterozoic ocean analogue. Geobiology, 18, 462-475. doi: 10.1111/gbi.12388
85. Sheldon, N.D., Smith. S.Y., Stein, R.A.*, Ng, M., 2020. Carbon isotope ecology of gymnosperms and implications for paleoclimatic and paleoecological studies. Global Planetary Change, 184, 103060. doi: 10.1016/j.gloplacha.2019.103060
84. Hren, M.T., Sheldon, N.D., 2020. Terrestrial microbialites provide constraints on the Mesoproterozoic atmosphere. The Depositional Record, 6(1), 4-20. doi: 10.1002/dep2.79
2019
83. Colwyn, D. A., Sheldon, N.D., Maynard, J.B., Gaines, R., Hofmann, A., Wang, X., Gueguen, B., Asael, D., Reinhard, C.T., Planavsky, N.J., 2019. A paleosol record of the evolution of Cr redox cycling and evidence for an increase in atmospheric oxygen during the Neoproterozoic. Geobiology, 17(6), 579-593. doi: 10.1111/gbi.12360
82. Gallagher, T.*, Hren, M.T., Sheldon, N.D., 2019. The effect of soil temperature seasonality on climate reconstructions from paleosols. American Journal of Science, 319(7), 549-581. doi: 10.2475/07.2019.02
81. Stein, R.A.*, Sheldon, N.D., Smith, S.Y., 2019. Rapid response to anthropogenic climate change by Thuja occidentalis: implications for past climate reconstructions and future climate predictions. PeerJ, 7, e7378. doi: 10.7717/peerj.7378
80. Rico, K.*, Sheldon, N.D., Gallagher, T.*, Chappaz, A., 2019. Redox chemistry and molybdenum burial in a Mesoproterozoic lake. Geophysical Research Letters, 46, 5871-5878. doi: 10.1029/2019GL083316.
79. Tessin, A.*, Schroeder-Adams, C., Elderbak, K., Sheldon, N.D., Hendy, I., 2019, Local versus seaway-wide trends in deoxygenation in the Late Cretaceous Western Interior Seaway: GSA Bulletin, 131, 1017-1030. doi: 10.1130/B32981.1
79. Rico, K.*, Sheldon, N.D., 2019. Nutrient and iron cycling in a modern analogue for the redoxcline of a Proterozoic ocean shelf. Chemical Geology, 511: 42-50. doi: 10.1016/j.chemgeo.2019.02.032
77. Tessin, A.*, Chappaz, A., Hendy, I., & Sheldon, N.D. 2019. Molybdenum speciation as a paleo-redox proxy: A case study from Late Cretaceous Western Interior Seaway black shales. Geology,47(1), 59-62. doi: 10.1130/G45785.1
76. Hyland, E.G.*, Sheldon, N.D., Smith, S.Y., Stromberg, C.A.E., 2019. Late Miocene rise and fall of C4 grasses in the western United States linked to aridification and uplift: GSA Bulletin, 131, (1-2) 224-234. doi: 10.1130/B32009.1
2018
75. Sheldon, N.D., 2018. Using carbon isotope equilibrium to screen pedogenic carbonate oxygen isotopes: implications for paleoaltimetry and paleotectonic studies: Geofluids, 2018(5975801), 1-11. doi: 10.1155/2018/5975801
74. Hyland, E.G., Sheldon, N.D., 2018. Comment on “Paleosol-based paleoclimate reconstruction of the Paleocene-Eocene Thermal Maximum, northern Argentina” by Andrews, E., White, T., del Papa, C. [Palaeogeography, Palaeoclimatology, Palaeoecology 471, 181-195]: Palaeogeography, Palaeoclimatology, Palaeoecology, doi: 10.1016/j.paleo.2017.05.031
73. Hyland, E.G., Huntington, K.W., Sheldon, N.D., Reichgelt, T., 2018, Temperature seasonality in the North American continental interior during the Early Eocene Climatic Optimum: Climate of the Past 14, 1391-1404. doi: 10.5194/cp-14-1391-2018
72. Planavsky, N.J., Cole, D.B.*, Isson, T.T.*, Reinhard, C.T., Crockford, P.W.*, Sheldon, N.D., Lyons, T.W., 2018, A case for low atmospheric oxygen levels during Earth’s middle history: Emerging Topics in Life Sciences 2, 149–159. doi: 10.1042/ETLS20170161
2017
71. Harris, E.B.*, Stromberg, C.A.E., Sheldon, N.D., Smith, S.Y., Vilhena, D., 2017, Vegetation response during the lead-up to the middle Miocene warming event in the Northern Rocky Mountains, USA: Palaeogeography, Palaeoclimatology, Palaeoecology 485, 401–415. doi: 10.1016/j.paleo.2017.150
70. Tessin, A.*, Bianchi, T.S., Sheldon, N.D., Hendy, I., Hutchings, J., Arnold, T.E., 2017, Organic matter source and thermal maturity within the Late Cretaceous Niobrara Formation, U.S. Western Interior: Marine and Petroleum Geology 86, 812-822. doi: 10.1016/j.marpetgeo.2017.06.041
69. Griffith, D.M.*, Cotton, J.M., Powell, R.J., Sheldon, N.D., Still, C.J. 2017, Multi-century stasis in C3 and C4 grass distributions across the contiguous United States since the industrial revolution: Journal of Biogeography 44, 2564-2574. doi: 10.1111/jbi.13061
68. Gallagher, T.M.*, Sheldon, N.D., Mauk, J.L., Petersen, S.V.*, Gueneli, N.*, and Brocks, J.J., Constraining the thermal history of the North America Midcontinent Rift System using carbonate clumped isotopes and organic thermal maturity indices: Precambrian Research, 294: 53-66. doi: 10.1016/j.precamres.2016.255
67. Kinsman-Costello, L.E.*, Sheik, C.S., Sheldon, N.D., Burton, G.A., Costello, D.M., Marcus, D.*, Den Uyl, P.A.*, Dick, G.J., 2017, Groundwater shapes sediment biogeochemistry and microbial diversity in a submerged Great Lake sinkhole: Geobiology 15, 225-239. doi:10.1116/2017.03.022.
66. Harris, E.B.*, Strömberg, C.A.E., Sheldon, N.D., Smith, S.Y., Ibanez-Mejia, M., 2017, Revised chronostratigraphy and biostratigraphy of the early-middle Miocene Railroad Canyon Section of central-eastern Idaho: GSA Bulletin 129, 1241-1251. doi: 10.1130/B31655.2.
65. Fiorella, R.P.*, Sheldon, N.D., Equable end Mesoproterozoic climate in the absence of high CO2: Geology 45, 231-234. doi: 10.1130/B38682.1
64. Hyland, E.G.*, Sheldon, N.D., Cotton, J.M., 2017, Constraining the EECO: a terrestrial interhemispheric comparison: GSA Bulletin 129, 244–252. doi: 10.1130/B31493.1
2016
63. Peterson, S.V.*, Tabor, C.R.*, Lohmann, K.C., Poulsen, C.J., Meyer, K.W.*, Carpenter, S.J., Erickson, J.M., Matsunaga, K.K.S.*, Smith, S.Y., Sheldon, N.D., 2016, Temperature and salinity of the Late Cretaceous Western Interior Seaway: Geology 44, 903–906, doi: 10.1130/G38311.1
62. Gallagher, T.G.*, Sheldon, N.D., 2016, Combining soil water balance and clumped isotopes to understand the nature and timing of pedogenic carbonate formation: Chemical Geology 435, 79–91. doi: 10.1016/j.chemgeo.2016.04.023
61. Tessin, A.*, Sheldon, N.D., Hendy, I., Chappaz, A., 2016, Iron limitation in the Western Interior Seaway during the late Cretaceous OAE 3 and its role in phosphorus recycling and enhancing organic matter preservation: Earth and Planetary Science Letters 449, 135–144.
60. Mitchell, R.L.*, Sheldon, N.D., 2016, Sedimentary provenance and weathering processes in the 1.1 Ga Midcontinental Rift of the Keweenaw Peninsula, Michigan, USA: Precambrian Research 275, 225–250. doi: 10.1016/j.precamres.2016.01.017
59. Hyland, E.G.*, Sheldon, N.D., 2016, Examining the spatial consistency of paleosol proxies: implications for paleoclimatic and paleoenvironmental reconstructions in terrestrial sedimentary basins: Sedimentology 63, 959-971. doi: 10.1111/sed.12245
58. Retallack, G.J., Gavin, D.G., Davis, E.B., Sheldon, N.D., Erlandson, J.M., Reed, M.H., Bestland, E.A., Roering, J.J., Carson, R.J., and Mitchell, R.B., 2016), Oregon 2100: projected and climatic and ecological changes. University of Oregon Museum of Natural and Cultural History Bulletin, no. 26, p. 1–21.
57. Sheldon, N.D., Grimes, S.T., Hooker, J.J., Collinson, M.E., Bugler, M.J., Hren, M.T., Price, G.D., Sutton, P.A., 2016, Coupling of marine and continental oxygen isotope records during the Eocene-Oligocene transition: GSA Bulletin 128, 502–510. doi: 10.1130/B31315.1
2015
56. Smith, S.Y., Manchester, S.R., Samant, B., Mohabey, D.M., Wheeler, E., Baas, P., Kapgate, D., Srivastava, R., Sheldon, N.D., 2015, Integrating paleobotanical, paleosol, and stratigraphic data to study critical transitions: a case study from the Late Cretaceous-Paleocene of India: Paleontological Society Special Paper 25, pp. 137–167.
55. Chen, S.T.*, Smith, S.Y., Sheldon, N.D., and Strömberg, C.A.E., 2015, Regional-scale variability in the spread of grasslands in the late Miocene: Palaeogeography, Palaeoclimatology, Palaeoecology 437, 42–52. doi:10.1016/j.paleo.2015.07.020
54. Tessin, A.*, Hendy, I.G., Sheldon, N.D., Sageman, B., 2015, Redox controlled preservation of organic matter during “OAE3” within the Western Interior Seaway. Paleoceanography 30, 702-717. doi: 10.1002/2014PA002729
53. Hyland, E.G.*, Sheldon, N.D., Van der Voo, R., Badgley, C.E., Abrajevitch, A., 2015, A new paleoprecipitation proxy based on soil magnetic properties: implications for expanding paleoclimate reconstructions: GSA Bulletin 127, 975–981. doi: 10.1130/B31207.1
52. Cotton, J.M.*, Sheldon, N.D., Hren, M.T., and Gallagher, T.M.*, 2015. Positive feedback drives carbon release from soils to atmosphere during Paleocene/Eocene warming: American Journal of Science 315, 337–361. doi: 10.2475/04.2015.03
51. Hyland, E.G.*, Sheldon, N.D., Cotton, J.M.*, 2015, Terrestrial evidence for a two-stage mid-Paleocene biotic event: Palaeogeography, Palaeoclimatology, Palaeoecology, 417, 371–378. doi:10.1016/j.palaeo.2014.09.031
2014
50. Cotton, J.M.*, Hyland, E.G.*, and Sheldon, N.D., 2014, Multiproxy evidence for tectonic control on the expansion of C4 grasses in northwest Argentina: Earth and Planetary Science Letters 395, 41–50. doi: 10.1016/j.epsl.2014.03.014
49. Sheldon, N.D., Chakrabarti, R., Retallack, G.J., and Smith, R.M.H., 2014, Contrasting geochemical signatures on land from the Middle and Late Permian extinction events: Sedimentology 61, 1812–1829. doi: 10.1111/sed.12117
2013
48. Sheldon, N.D. 2013, Causes and consequences of low atmospheric CO2 levels in the Mesoproterozoic: Chemical Geology 362 , 224-231. doi: 10.1016/j.chemgeo.2013.09.006
47. Cotton, J.M*, Jeffery, M. L.*, and Sheldon, N. D. 2013, Climate controls on soil respired CO2 in the United States: Implications for 21st century chemical weathering rates in temperate and arid ecosystems: Chemical Geology 358, 37-45. Doi: 10.1016/j.chemgeo.08.048
46. Hren, M.*, Sheldon, N.D., Bugler, M.J., Grimes, S.T., Hooker, J.J., Collinson, M.E., and Lohmann, K.C., 2013, Terrestrial cooling in northern Europe during the Eocene-Oligocene transition: Proceedings of the National Academy of Sciences 110, 7562–7567. doi: 10.1073/pnas.1210930110
45. Gallagher, T.M.*, and Sheldon, N.D., 2013, A new paleothermometer for forest paleosols and its implications for Cenozoic climate: Geology 41, 647–650. doi:10.1130/B34074
44. Hyland, E.G.*, Smith, S.Y., Sheldon, N.D., 2013, Representational bias in phytoliths from modern soils of central North America: implications for paleovegetation reconstructions: Palaeogeography, Palaeoclimatology, Palaeoecology 374, 338–348. doi: 10.1016.j.palaeo.2013.01.026
43. Hyland, E.G.*, Sheldon, N.D., and Fan, M., 2013, Continental record of the Early Eocene Climatic Optimum: GSA Bulletin 125, 1338–1348. doi: 10.1130/B30761.1
42. Cotton, J.M.*, and Sheldon, N.D., 2013, Using stable isotopes to teach agricultural sustainability in both high- and low-enrollment courses: Journal of Geoscience Education 61, 59–67 doi: 10.5408/12-309.1
41. Sheldon, N.D., and Tabor, N.J., 2013, Using paleosols to understand paleo-carbon burial: SEPM Special Paper 104 (Eds. S. Driese and L. Nordt), 71–78. doi: 10.2110/sepmsp.104.11
40. Tabor, N., Myers, T., Gulbranson, E., Rasmussen, C., and Sheldon, N.D., 2013, Carbon stable isotope composition of modern calcareous soil profiles in California: implications for CO2 reconstructions from calcareous paleosols: SEPM Special Paper 104 (Eds. S. Driese and L. Nordt), 17–34. doi: 10.2110/sepmsp.104.07
39. Hyland, E.G.*, and Sheldon, N.D., 2013, Coupled CO2-climate response during the Early Eocene Climatic Optimum (Green River Basin, Wyoming, USA): Palaeogeography, Palaeoclimatology, Palaeoecology 369, 125–135. doi: 10.1016/j.palaeo.2012.10.011
2012
38. Sheldon, N.D., 2012, Microbially induced sedimentary structures in the ca. 1100 Ma terrestrial Midcontinent Rift of North America, in, Noffke, N., and Chafetz, H., eds., Microbial Mats in Siliciclastic Systems Through Time: SEPM Special Publication 101, p. 153–162. doi: 10.2110/sepmsp.101.153
37 De la Horra, R., Galán-Abellán, A.B., López-Gómez, J., Sheldon, N.D., Barrenechea, J.F., Luque, F.J., Arche, A., and Benito, M.I., 2012, Paleoenvironmental changes during the continental end-Guadalupian transition at the SE Iberian Ranges, Spain: Global and Planetary Change 94, 46–61. doi: 10.1016/j.gloplacha.2012.06.008
36. Cotton, J.M.*, and Sheldon, N.D. 2012, New constraints on using paleosols to reconstruct atmospheric pCO2: GSA Bulletin 124, 1411–1423. doi:10.1130/B30607.1
35. Miller, L.*, Smith, S.Y., Sheldon, N.D., and Strömberg, C.A.E., 2012, Eocene vegetation dynamics in Montana inferred from a high-resolution phytolith record: GSA Bulletin 124, 1577–1589. doi: 10.1130/B30548.1
34. Hren, M.T.*, and Sheldon, N.D., 2012, Temporal variations in lake water temperature: paleoenvironmental implications of lake carbonate δ18O and temperature records: Earth and Planetary Science Letters 337, 77–84. doi: 10.1016/j.epsl.2012.05.19.
33. Cotton, J.M.*, Sheldon, N.D., and Strömberg, C.A.E., 2012, High-resolution isotopic record of C4 photosynthesis in a Miocene grassland: Palaegeography, Palaeoclimatology, Palaeoecology 337-338, 88–98. doi: 10.1016/j.palaeo.2012.03.035.
32. Voorhies, A.A.*, Biddanda, B., Kendall, S.T., Jain, S.*, Marcus, D.N.*, Nold, S.C., Sheldon, N.D., and Dick, G.J., 2012. Cyanobacterial life at low O2: community genomics and function reveal extremely low diversity and metabolic versatility of a benthic cyanobacterial mat: Geobiology 10, 250–267, doi: 10.1111/j.l472-4669.2012.00322.x
31. Sheldon, N.D., Costa, E.*, Cabrera, L., and Garcés, M., 2012, Continental climatic and weathering response to the Eocene-Oliogocene transition: Journal of Geology 120, 227–236. doi: 10.1086/663984
30. Gutierrez, K.A.*, and Sheldon, N.D., 2012, Paleoenvironmental reconstruction of Middle Jurassic dinosaur habitats of the Vega Formation, Asturias, Spain: GSA Bulletin 124, 596–610. doi: 10.1130/B30285.1
2011
29. Driese, S.G., Jirsa, M.A., Ren, M., Sheldon, N.D., Brantley, S.L., Parker, D., and Schmitz, M., 2011, Neoarchean paleoweathering of tonalite and metabasalt: implications for reconstructions of 2.69 Ga early terrestrial ecosystems and paleoatmospheric chemistry: Precambrian Research 189, 1–17. doi: 10.1016/j.precamres.2011.04.003
28. Retallack, G.J., Sheldon, N.D., Carr, P.F., Fanning, M., Thompson, C.A., Williams, M.L., Jones, B.G., and Hutton, A., 2011, Multiple Early Triassic greenhouse crises impeded recovery from Late Permian mass extinction: Palaeogeography, Palaeoclimatology, Palaeoecology 308, 233–251.doi:10.1016/j.palaeo.2010.09.022
2010
27. Mitchell, R.L.*, and Sheldon, N.D., 2010, ~1100 Ma Sturgeon Falls paleosol revisited: implications for Mesoproterozoic weathering environments and atmospheric CO2 levels: Precambrian Research 183, 738–748. doi: 10.1016/j.precamres.2010.09.003
26. Hamer, J.M.M.*, and Sheldon, N.D., 2010, Neoichnology at lake margins: Sedimentary Geology 228, 319–327. doi: 10.1016/j.sedgeo.2010.06.02
25. Sheldon, N.D., Hamer, J.M.M.*, 2010, Evidence for an early sagebrush ecosystem in the latest Eocene of Montana: Journal of Geology 118, 435–445. doi: 10.1086/652660
2009
24. Hooker, J.J., Grimes, S.T., Mattey, D.P., Collinson, M.E., and Sheldon, N.D., 2009, Refined correlation of the UK Late Eocene – Early Oligocene Solent Group and of its climate history: GSA Special Paper 452, p. 179–196. doi: 10.1130/2009.2452(12)
23. Sheldon, N.D., Mitchell, R.L.*, Collinson, M.E., and Hooker, J.J., 2009, Eocene-Oligocene transition paleoclimatic and paleoenvironmental record from the Isle of Wight (UK): GSA Special Paper 452, p. 249–260. doi: 10.1130/2009.2452(16)
22. Sheldon, N.D., 2009, Non-marine records of climatic change across the Eocene-Oligocene transition: GSA Special Paper 452, p. 241–248. doi: 10.1130/2009.2452(15)
21. Sheldon, N.D., and Tabor, N. J., 2009, Quantitative Paleoenvironmental and Paleoclimatic Reconstruction Using Paleosols: Earth-Science Reviews 95, p. 1-52. doi: 10.1016/j.earscirev.2009.03.004
20. Mitchell, R.L.*, Sheldon, N.D., 2009, Weathering and paleosol formation in the 1.1. Ga Keweenawan Rift: Precambrian Research 168, 271–283. doi: 10.1016/j.precamres.2008.09.013
2007
19. Hamer, J.M.M.*, Sheldon, N.D., and Nichols, G.J., 2007, Global aridity during the Early Miocene? A Terrestrial Paleoclimate Record from the Ebro Basin, Spain: Journal of Geology 115, 601–608. doi: 10.1086/519780
18. Hamer, J.M.M.*, Sheldon, N.D., Nichols, G.J., Collinson, M.E., 2007, Late Oligocene – Early Miocene Palaeosols of Distal Fluvial Systems, Ebro Basin, Spain: Palaeogeography, Palaeoclimatology, Palaeoecology 247, 220–235. doi: 10.1016/j.palaeo.2006.10.016
2006
17. Sheldon, N.D., 2006, Teaching Quantitative Skills and Integrative Thinking in the Earth Sciences Using Object-Oriented Models: Planet, v. 17, p. 44–47. doi: 10.11120/plan.2006.00170044
16. Retallack, G.J., Metzger, C.A.*, Jahren, A.H., Greaver, T.*, Smith, R.M.H., Sheldon, N.D., 2006, Middle-Late Permian mass extinction on land: GSA Bulletin 118, 1398–1411. doi: 10.1130/B26011.1
15. Sheldon, N.D., 2006, Precambrian Paleosols and Atmospheric CO2 Levels: Precambrian Research 147, 148–155. doi: 10.1016/j.precamres.2006.02.004
14. Sheldon, N.D., 2006, Quaternary Glacial-Interglacial Climate Cycles in Hawaii: Journal of Geology 114, 367–376. doi: 10.1086/500993
13. Sheldon, N.D., 2006, Abrupt chemical weathering increase across the Permian-Triassic boundary: Palaeogeography, Palaeoclimatology, Palaeoecology 231, 315–321. doi: 10.1016/j.palaeo.2005.09.001
12. Perez-Huerta, A.*, and Sheldon, N.D., 2006. Pennsylvanian Sea Level Cycles, Nutrient Availability, and Brachiopod Community Structure: Palaeogeography, Palaeoclimatology, Palaeoecology 230, 264–279. doi: 10.1016/j.palaeo.2005.07.020
11. Sheldon, N.D., 2006, Using Paleosols of the Picture Gorge Basalt to Reconstruct the Middle Miocene Climatic Optimum: Paleobios, v. 26 (2), p. 27–36.
2005
10. Sheldon, N.D., 2005, Do red beds indicate paleoclimatic conditions?: A Permian case study: Palaeogeography, Palaeoclimatology, Palaeoecology 228, 305–319. doi: 10.1016/j.palaeo.2005.06.009
9. Retallack, G.J., Jahren, H., Sheldon, N.D., Chakrabarti, R.*, Metzger, C.A.*, and Smith, R.M.H., 2005. The Permian-Triassic boundary in Antarctica: Antarctic Science 17, 241–258.doi: 10.1017/S0954102005002658
2004
8. Sheldon, N.D., and Retallack, G.J., 2004, Regional Paleoprecipitation Records from the Late Eocene and Oligocene of North America: Journal of Geology 112 (4), 487-494. doi: 10.1086/421076
2003
7. Sheldon, N.D., 2003, Pedogenesis and Geochemical Alteration of the Picture Gorge Subgroup, Columbia River Basalt, Oregon: GSA Bulletin 115 (11), 1377–1387. doi: 10.1130/B25223.1
6. Retallack, G.J., Sheldon, N.D., Cogoini, M.*, and Elmore, R.D., 2003, Magnetic susceptibility of early Paleozoic and Precambrian paleosols: Palaeogeography, Palaeoclimatology, Palaeoecology 198, 373–380. doi: 10.1016/S0031-0182(03)00479-6
5. Sheldon, N.D., and Retallack, G.J., 2003, Reply to Huggett and Hesselbo Comment on, Low oxygen levels in earliest Triassic soils: Geology 31, e20–e21. doi: 10.1130/0091-7613-31.1.e21
2002
4. Sheldon, N.D., Retallack, G.J., and Tanaka, S., 2002, Geochemical climofunctions from North America soils and application to paleosols across the Eocene-Oligocene boundary in Oregon: Journal of Geology 110 (6), 687–696. doi: 10.1086/342865
3. Sheldon, N.D., and Retallack, G.J., 2002, Low oxygen levels in earliest Triassic soils: Geology 30 (10), 919–922. doi: 10.1130/0091-7613(2002)0302.0.CO;2
2001
2. Sheldon, N.D., and Retallack, G.J., 2001, Equation for compaction of paleosols due to burial: Geology 29 (3), 247–250. doi: 10.1130/0091-7613(2001)0292.0.CO;2
1. Clyde, W.C., Sheldon, N.D., Koch, P.L., Gunnell, G.F., and Bartels, W.S., 2001, Linking the Wasatchian/Bridgerian Boundary to the Cenozoic Global Climate Optimum: New Magnetostratigraphic and Isotopic Results from South Pass, Wyoming: Palaeogeography, Palaeoclimatology, Palaeoecology 167 (1-2), 175–199. doi: 10.1016/S0031-0182(00)00238-8
Other Refereed Publications (2)
Sheldon, N.D., 2008, Red beds, ed. Vivien Gornitz, Encyclopedia of Paleoclimatology and Ancient Environments, Kluwer Academic Publishers, pp. 871-873.
Sheldon, N.D., 2007, Montana – home of the world’s staple foods?: Planet Earth, v. 6, p. 20–21.
