Publications

(underline indicates advised student author)

Caesar, K.H., Kyle, J.R., Lyons, T.W., Tripati, A.E., and Loyd, S.J., 2019, Carbonate formation in salt dome cap rocks by microbial anaerobic oxidation of methane: Nature Communications 10, doi.org/10.1038/s41467-019-08687-z.

Stamps, B.W., Nunn, H.A., Petryshyn, V., Loyd, S.J., Oremland, R.S., Miller, L.G., Rosen, M.R., Johnson, H.A., Stevenson, B.S., Berelson, W.M., GeoBiology 2016, Corsetti, F.A., Spear, J.R., 2018, The Metabolic Capability and Phylogenetic Diversity of Mono Lake During a Bloom of Picocystis strain ML: Applied and Environmental Microbiology 84, doi.org/10.1128/AEM.01171-18.

Kraus, E.A., Beeler, S.R., Mors, R.A., Floyd, J.G., Geobiology 2016, Piazza, O., Frantz, C.M., Loyd, S.J., Berelson, W., Stevenson, B.S., Marenco, P.J., Spear, J.R., Corsetti, F.A., 2018, Assessing the biological contribution to mineralized cap formation in the Little Hot Creek hot spring system: Frontiers in Microbiology 9, 13 p.

Bonuso, N., Loyd, S.J., and Lorentz, N.J., 2018, Pioneer reef communities within a Middle Triassic (Anisian) to Late Triassic (Carnian) carbonate ramp system from the Star Peak Group, South Canyon, central NV. Paleontology, Paleoecology, Paleoclimateology 503, 1-12.

Bradley, J.A., Daille, L.K., Trivedi, C.B., Bojanowski, C.L., Stamps, B.W., Bradley, S.S., Nunn, H.S., Johnson, H.A., Loyd, S.J., Berelson, W.M., Corsetti, F.A., Spear, J.R., 2017, Carbonate-rich cones: Insights into a modern analog for insipient microbialite formation, Little Hot Creek, Long Valley Caldera, California: Nature Biofilms and Microbiomes 32, 11 p.

Hardisty, D.S., Lu, Z., Bekker, A., Diamond, C.W., Gill, B.C., Jiang, G., Kah, L., Knoll, A.H., Loyd, S.J., Osburn, M.R., Planavsky, N.J., Wang, C., Zhou, X., Lyons, T.W., 2017, Perspectives on Proterozoic surface ocean redox from iodine contents in ancient and recent carbonate: Earth and Planetary Science Letter, v. 463, p. 159-170.

Loyd, S.J., Sample, J., Tripati, R.E., Defliese, W.F., Brooks, K., Hovland, M., Torres, M., Marlow, J., Hancock, L.G., Martin, R., Lyons, T., Tripati, A.E., 2016, Methane seep carbonates yield clumped isotope signatures out of equilibrium with formation temperatures: Nature Communications, v. 7, doi: 10.1038/ncommc12274.

Loyd, S.J., 2016, Preservation of overmature, ancient, sedimentary organic matter in carbonate concretions during outcrop weathering: Geobiology, v. 15, p. 146-157.

Loyd, S.J. and Berelson, W.M., 2016, The modern record of "concretionary" carbonate: Reassessing a discrepancy between modern sediments and the geologic record: Chemical Geology, v. 420, p. 77-87.

Eagle, R.A., Enriquez, M., Grellet-Tinner, G., Perez-Huerta, A., Hu, D., Tutken, T., Montanari, S., Loyd, S.J., Ramirez, P., Tripat, A.K., Kohn, M.J., Cerling, T.E., Chiappe, L.M., and Eiler, J.M., 2015, Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs: Nature Communications, v. 6, doi:10.1038/ncomms9296.

Corsetti, F.A., Ritterbush, K.A., Bottjer, D.J., Greene, S.E., Ibarra, Y., Yager, J.A., West, J., Berelson, W.M., Rosas, S., Becker, T.W., Levine, N.M., Loyd, S.J., Martindale, R.C., Petryshyn, V.A., Carroll, N.R., Petsios, E., Piazza, O., Pietsch, C., Stellmann, J.L., Thompson, J.R., Washington, K.A., and Wilmeth, D.T., 2015, Investigating the paleoecological consequences of supercontinent breakup: Sponges clean up in the Early Jurassic: The Sedimentary Record, v. 13, p. 4-10.

Loyd, S.J., Corsetti, F.A., Eagle, R.A., Hagadorn, J.W., Shen, Y., Zhang, X., Bonifacie, M., Tripati, A.K., 2015, Evolution of Neoproterozoic Wonoka-Shuram Anomaly-aged carbonates: Evidence from clumped isotope paleothermometry: Precambrian Research, v. 264, p. 179-191.

Loyd, S.J., Dickson, J.A.D., Boles, J.R., and Tripati, A.K., 2014, Clumped isotope constraints on cement paragenesis in septarian concretions: Journal of Sedimentary Research, v. 84, p. 1170-1184.

Peng, Y., Bao, H., Pratt, L.M., Kaufman, A.J., Jiang, G., Boyd, D., Wang, Q., Zhou, C., Yuan, X., Xiao, S., and Loyd, S.J., 2014, Widespread contamination of carbonate-associated suflate by present-day secondary atmospheric sulfate: Evidence from triple oxygen isotopes: Geology, v. 42, p. 815-818.

Loyd, S.J., Dickson, J.A.D., and Tripati, A.K., 2013, Extensive, uplift-related, and non-fault-controlled spar precipitation in the Permian Capitan Formation: Sedimentary Geology, v. 298. p. 17-27.

Loyd, S.J., Marenco, P.J., Hagadorn, J.W., Lyons, T.W., Kaufman, A.J., Sour-Tovar, F., and Corsetti, F.A., 2013, Local d 34S variability in ~580 Ma carbonates of northwestern Mexico and the Neoproterozoic marine sulfate reservoir: Precambrian Research, v. 224, p. 551-569.

Loyd, S.J., Corsetti, F.A., Eiler, J.M., and Tripati, A.K., 2012, Determining the diagenetic conditions of concretion formation: Assessing temperatures and pore waters using clumped isotopes: Journal of Sedimentary Research, v. 82, p. 1006-1016.

Loyd, S.J., Marenco, P.J., Hagadorn, J.W., Lyons, T.W., Kaufman, A.J., Sour-Tovar, F., and Corsetti F.A., 2012, Sustained low marine sulfate concentrations from the Neoproterozoic to the Cambrian: Insights from carbonates of northwestern Mexico and eastern California: Earth and Planetary Science Letters, v. 339-340, p. 79-94.

Loyd, S.J., Berelson, W.M., Lyons, T.W., Hammond, D.E., and Corsetti, F.A., 2012, Constraining pathways of microbial mediation for carbonate concretions of the Miocene Monterey Formation using carbonate-associated sulfate: Geochimica et Cosmochimica Acta, vol. 78, pp. 77-98.

Loyd, S.J., and Corsetti, F.A., 2010 , The origin of the mm-scale lamination in the Neoproterozoic lower Beck
Spring Dolomite: Implications for widespread, fine-scale, layer-parallel diagenesis in Precambrian carbonates: Journal of Sedimentary Research, vol. 80, pp. 678-687.

Loyd, S.J., Becker, T.W., Conrad, C.P., Lithgow-Bertelloni, C., and Corsetti, F.A., 2007, Time variability in Cenozoic reconstructions of mantle heat flow: Plate tectonic cycles and implications for Earth's thermal evolution. PNAS, vol. 104, no. 36, pp. 14266-14271.

Presentations

(underline indicates advised student author)

Loyd, S.J., Kyle, R., Tripati, A., 2018, Microbial versus thermochemical methane oxidation-coupled sulfate reduciton in salt dome environments of the Gulf Coast USA: Insights from clumped isotope geochemistry: AGU annual meeting, Washington DC, Dec 10-14. eLightning.

Hill, J., Loyd, S.J., 2018, Origin of sulfur for elemental sulfur concentration in salt dome cap rocks, Gulf Coast Basin, USA: Southern California Geobiology Symposium, Riverside, CA, April 21.

Hill, J., Loyd, S.J., 2018, Origin of sulfur for elemental sulfur concentration in salt dome cap rocks, Gulf Coast Basin, USA: CSUF Research Day, April 13.

Frederickson, C., Loyd S.J., 2018, Geochemical and Petrographic Analysis of Salt Dome Associated Calcite Phases in Gulf Coast Cap Rocks: Implications for Carbon Sources and Paragenetic Evolution: CSUF Research Day, April 13.

Bustos, A., Loyd S.J., 2018, Carbon isotope variability in the Bonanza King Formation, Eastern Great Basin: CSUF Research Day, April 13.

De La Cruz, Y., Loyd S.J., 2018, Geochemical characterization of marine organic matter in IODP cores containing with authigenic carbonate: CSUF Research Day, April 13.

Westrick-Snapp, B., Loyd S.J., 2018, Sulfur and carbon isotope geochemistry of SPICE-aged carbonates of the Great Basin: CSUF Research Day, April 13.

Loyd, S.J., 2017, Quantification of the "global" authigenic carbonate δ13C value and implications for carbon cycling: AGU annual meeting, New Orleans, CA, Dec 11-15.

Hill, J., Loyd, S.J., 2017, Origin of sulfur for elemental sulfur concentration in salt dome cap rocks, Gulf Coast Basin, USA: AGU annual meeting, New Orleans, CA, Dec 11-15.

Frederickson, C., Loyd S.J., 2017, Geochemical and Petrographic Analysis of Salt Dome Associated Calcite Phases in Gulf Coast Cap Rocks: Implications for Carbon Sources and Paragenetic Evolution: CSUF Research Day, April 16.

Andelin, K., Loyd, S.J., 2017, Sulfur Isotopic Composition of Anhydrite in the Salt Stock and Cap Rock of Gulf Coast Salt Domes: CSUF Research Day, April 16.

Hill, J., Loyd, S.J., 2017, Biogenic vs Thermogenic: Determining Native Sulfur Formation Mechanisms in Gulf Coast Salt Domes Using Multiple Sulfur Isotopes: CSUF Research Day, April 16. Awarded Best Proposal Presentation.

Sandoval, A., Loyd, S.J., 2017, Geochemistry of phosphatic-shales and associated authigenic minerals of the Miocene Monterey Formation: Implication for paragenetic evolution: CSUF Research Day, April 16.

Smirnoff, M.N., Loyd, S.J., 2017, Carbonate Geochemistry of Marine Authigenic Carbonates and Host Sediments: Exploring Mineral Formation Pathways and Organic Preservation Potential in Modern Sediments: CSUF Research Day, April 16.

Sandoval, A., Loyd, S.J., 2016, Geochemistry of phosphatic-shales and associated authigenic minerals of the Miocene Monterey Formation: Implications for paragenetic evolution: AGU annual meeting, San Francisco, CA, Dec 12-16.

Smirnoff, M.N., Loyd, S.J., 2016, Carbonate geochemistry of marine authigenic carbonates and host sediments: Exploring mineral formation pathways and organic preservation potential in modern sediments: AGU annual meeting, San Francisco, CA, Dec 12-16.

Loyd, S.J., Smirnoff, M.N., Tripati, A.K., 2016, Clumped isotope compositions of authigenic carbonate recovered from cored marine sediments: AGU annual meeting, San Francisco, CA, Dec 12-16.

Floyd, J.G., Beeler, S.R., Mors, R.A., Kraus, E.A., International Geobiology Course 2016, Piazza, O., Frantz, C.M., Loyd, S.J., Berelson, W., Stevenson, B.S., Marenco, P.J., Spear, J.R., Corsetti, F.A., 2016, Assessing the biological contribution to mineralized cap formation in the Little Hot Creek hot spring system: AGU annual meeting, San Francisco, CA, Dec 12-16.

Medina, F., Russell, V.V., Feyhl-Buska, J., Sonderholm, F., Loyd, S.J., Shapiro, R.S., Rosen, M.R., Stamps, B.W., Petryshyn, V., Johnson, H., Spear, J.R., Corsetti, F.A., 2016, Assessing the biogenicity of tufas and their potential as biosignature repositories: AGU annual meeting, San Francisco, CA, Dec 12-16.

Prokopenko, M., Corsetti, F.A., Gaines, R.R., Loyd, S.J., Cordova, A., Berelson, W., 2016, The nitrogen cycle under changing redox conditions during late Neoproterozoic: the Ediacaran nitrate revolution?: AGU annual meeting, San Francisco, CA, Dec 12-16.

Stamps, B.W., Petryshyn, V., Johnson, H., Berelson, W., Nunn, H.S., Stevenson, B.S., Loyd, S.J., Oremland, R.S., Miller, L.G., Rosen, M.R., Corsetti, F.A., Spear, J.R., 2016, The biogeography of Endorheic soda lakes in the western United States: AGU annual meeting, San Francisco, CA, Dec 12-16. oral, invited.

Caesar, K., Kyle, R., Lyons, T., Loyd, S.J., 2016, Sulfate-dependent anaerobic oxidation of methane as a generation mechanism for calcite cap rock in Gulf Coast salt domes, USA: Oral, Invited: Southern California Geobiology Symposium, Pasadena, CA, May 7.

Sandoval, A., Loyd, S.J., 2016, Geochemistry of phosphatic-shales and associated authigenic minerals of the Miocene Monterey Formation: Implications for paragenetic evolution: Southern California Geobiology Symposium, Pasadena, CA, May 7.

Hardisty, D., Lu, Z., Bekker, A., Gill, B., Jiang, G., Kah, L., Knoll, A., Loyd, S., Osburn, M., Planavsky, N., Swart, P., Zhou, X., Diamond, C., Lyons, T. (2016, May). Iodine constraints on Proterozoic shallow ocean redox and their biological implications: Southern California Geobiology Symposium, Pasadena, CA, May 7.

Caesar, K., Kyle, R., Lyons, T., Loyd, S.J., 2016, Sulfate-dependent anaerobic oxidation of methane as a generation mechanism for calcite cap rock in Gulf Coast salt domes, USA: CSUF Geology Research Day, Fullerton, CA, April 22.

Sandoval, A., Loyd, S.J., 2016, Geochemistry of phosphatic-shales and associated authigenic minerals of the Miocene Monterey Formation: Implications for paragenetic evolution: CSUF Geology Research Day, Fullerton, CA, April 22.

Smirnoff, M.N., Loyd, S.J., 2016, Carbonate Geochemistry of Marine Authigenic Carbonates and Host Sediments: Exploring Mineral Formation Pathways and Organic Preservation Potential in Modern Sediments: CSUF Geology Research Day, Fullerton, CA, April 22.

Westrick-Snapp, B., Loyd, S.J., 2016, Carbon Geochemistry of Miocene-aged Concretions of the Castaic Formation: CSUF Geology Research Day, Fullerton, CA, April 22.

Fontenot, S., Loyd, S.J., 2016, Organic and inorganic carbon analyses of shallow sediments at Overflow Lake, Santa Barbara, CA: CSUF Geology Research Day, Fullerton, CA, April 22.

Lu, L., Loyd, S.J., 2016, Identification of a methane carbon source for organic carbon contained in salt dome cap rocks of the Gulf Coast Region, USA: CSUF Geology Research Day, Fullerton, CA, April 22.

Caesar, K.H., Kyle, J.R., Lyons, T.W., and Loyd, S.J., 2016, Sulfate-dependent Anaerobic Oxidation of Methane as a Generation Mechanism for Calcite Cap Rock in Gulf Coast Salt Domes: GSA Cordilleran section meeting, Ontario, CA, April 4-6.

Loyd, S.J., Lu, L., and Caesar, K., 2015, Depleted d13C Values in Salt Dome Cap Rock Organic Matter and Implications for Microbial Metabolism and Fixation: AGU annual meeting, San Francisco, CA, Dec 14-18.

Caesar, K.H., Kyle, J.R., and Loyd, S.J., 2015, Sulfate-dependent Anaerobic Oxidation of Methane as a Generation Mechanism for Calcite Cap Rock in Gulf Coast Salt Domes: AGU annual meeting, San Francisco, CA, Dec 14-18.

Hardisty, D.S., Lu, Z., Swart, P.K., Planavsky, N.J., Gill, B.C., Loyd, S.J., and Lyons, T.W., 2015, Assessing potential diagenetic alterations to carbonate iodine-to-calcium ratios: AGU annual meeting, San Francisco, CA, Dec 14-18.

Ritterbush, K., Bottjer, D.A., Corsetti, F.A., Berelson, W.M., Loyd, S.J., 2015, Examining early-diagenetic processes as a chief sink for carbonate in the aftermath of the Triassic-Jurassic crisis: Hettangian concretions of Muller Canyon, NV, USA: AGU annual meeting, San Francisco, CA, Dec 14-18.

Santiago, D., Rempfert, K., Libanori, G., Zhang, F., Loyd, S.J., Corsetti, F.A., Spear, J., Stevenson, B., Stamps, B., 2015, Preservation Potential of Life in Little Hot Creek, California: Implications for the use of Hot Spring Systems as Astrobiological Targets: AGU annual meeting, San Francisco, CA, Dec 14-18.

Caesar, K.H., Kyle, J.R., and Loyd, S.J., 2015, Geochemical modeling of the role of sulfate in the precipitation of caclite cap rocks for Gulf of Mexico salt domes: GSA annual meeting, Baltimore, MD, Nov 1-4.

Hill, J., Kyle, J.R., Caesar, K., and Loyd, S.J., 2015, Petrographic and Isotopic Evidence for the Evolution of the Calcite Cap Rock of the Boling Salt Dome, Houston Diapir Province, Texas: GSA annual meeting, Baltimore, MD, Nov 1-4.

Chou, L., Maldegem, L., Buongiorno, J., Zinke, L., Petryshyn, V., Shapiro, R., Piazza, O., Loyd, S.J., Tripati, A.K., Spear, J., Corsetti, F., 2015, Sequence stratigraphy of Ancient Walker Lake, Nevada reveals unique analog for studying Proterozoic stromatolite formation and climatic forcings: GSA annual meeting, Baltimore, MD, Nov 1-4.

Rempfert, K., Santiago, D., Santilli Nascimento, G., Zhang, F., Loyd, S.J., Bertran, E., Stamps, B., Stevenson, B., Spear, J., Corsetti, F.A., 2015, Spatial variations in microbial community composition between water and sediment samples in Little Hot Creek, California: Implications for the role of temperature in controlling hot spring diversity: GSA annual meeting, Baltimore, MD, Nov 1-4.

Hardisty, D.S., Lu, Z., Osburn, M.R., Loyd, S.J., Zhou, X., Jiang, G., Planavsky, N.J., Lyons, T.W., 2015, Surface ocean oxygenation coincident with the Late Neoproterozoic Shuram carbon isotope excursion and animal diversification: Astrobiology Science Convention, Chicago, IL, June 15-19.

Caesar, K.H., Kyle, J.R., and Loyd, S.J., 2015, Identification of sulfate reduction as a mechanism for salt dome cap rock formation in the Gulf Coast Region, USA: 12th Annual Southern California Geobiology Symposium, University of California, Riverside, poster.

Loyd, S.J., 2014, Carbonate concretions as a significant component of ancient marine carbon cycles: Isnights from paired organic and inorganic carbon isotope analyses of a Cretaceous shale: AGU Annual Meeting, San Francisco, poster.

Loyd, S.J., Dickson, J.A.D., Boles, J.R., and Tripati, A.K., 2013, Cement paragenesis in septarian concretions: Evidence form clumped isotopes and microscopic examination: AGU Annual Meeting, San Francisco, poster.

Prokopenko, M.G., Corsetti, F., Gaines, R.G., Loyd, S.J., Kaufmann, J., Berelson, W.M., 2013, An abrupt change in the nitrogen cycle as recorded in carbonate associated nitrate (CAN) across Ediacaran-Cambrian transition: Goldschmidt, Florence, Italy, poster.

Loyd, S.J., 2013, Ediacaran to Cambrian carbon, sulfur and clumped isotope geochemistry: Implications for deep-time paleoclimate during a biotic transition: UCLA Geocheminar. oral.

Loyd, S.J., 2013, Carbonate concretions of the Monterey Formation: Geochemistry, microbial influences and formation temperatures: Caltech. oral, invited.

Loyd, S.J., Sample, J., Orphan, V., Marlow, J., Eagle, R., and Tripati, A.K., 2012, Clumped isotope analyses of cold seep carbonates: Insights into formation environment and mechanisms: AGU Annual Meeting, San Francisco.

Miles, B., Loyd, S.J., Hudson, J., Dickson, T., and Tripati, A.K., 2012, Tracking pore-water evolution through clumped isotope analyses of a septarian concretion: AGU Annual Meeting, San Francisco.

Enriquez, M., Eagle, R.A., Eiler, J.M., Tripati, A.K., Ramirez, P., Loyd, S., Chiappe, L., Montanari, S., Norell, M., and Tutken, T., 2012, Assessment of diagenetic alteration of dinosaur eggshells through petrography and geochemical analysis: AGU Annual Meeting, San Francisco.

Loyd, S.J., Berelson, W.M., Lyons, T.W., Hammond, D.E., Tripati, A.K., Eiler, J.M., and Corsetti, F.A., 2012, Formation mechanisms of carbonate concretions of the Monterey Formation: Analyses of clumped isotopes, iron, sulfur and carbon: Goldschmidt, Montreal, Canada. oral.

Loyd, S.J., Berelson, W.M., Lyons, T.W., Hammond, D.E., Tripati, A.K., and Corsetti, F.A., 2012, Microbially induced carbonate precipitation: Preserving metabolic signatures in concretions of the Monterey Formation: Abscicon, Atlanta, GA. oral.

Loyd, S.J., Berelson, W.M., Lyons, T.W., Hammond, D.E., Tripati, A.K., and Corsetti, F.A., 2012, Carbonate concretion geochemistry: Microbial influences and formation temperatures: UCLA Geocheminar. oral.

Loyd, S.J., Marenco, P.J., Hagadorn, J.W., Lyons, T.W., Kaufman, A.J., Sour-Tovar, F., and Corsetti, F.A., 2011, Local d34S variability in ~580Ma carbonates of the Clemente Formation, Caborca, Mexico: Implications for Neoproterozoic marine sulfate: AGU Annual Meeting, San Francisco, CA. poster.

Loyd, S.J., Berelson, W.M., Lyons, T.W., Hammond, D.E., Tripati, A.K., and Corsetti, F.A., 2011, Formation mechanisms of carbonate concretions of the Monterey Formation: Colloquium on the Monterey Formation, University of Southern California. oral, invited.

Loyd, S.J., Dickson, T., Hudson, J.D., Eiler, J.M., and Tripati, A.K., 2011, Assessing cementation in the El Capitan Reef Complex and Lincolnshire Limestone using 13C-18O bond abundances in carbonates: Goldschmidt, Prague, Czech Republic. oral.

Loyd, S.J., Dickson, T., Hudson, J.D., Eiler, J.M., and Tripati, A.K., 2011, Assessing cementation in the El Capitan Reef Complex and Lincolnshire Limestone using 13C-18O bond abundances in carbonates: 2nd Annual Clumped Isotope Workshop, Imperial College, London, UK. poster.

Loyd, S.J., Eiler, J.M., and Tripati, A.K., 2011, Using clumped isotope compositions of microbially produced carbonate to track silica diagenesis in the Monterey Formation: A proposed future research directive. 8th Annual Southern California Geobiology Symposium, University of Southern California. poster.

Loyd, S.J., Corsetti, F.A., and Tripati, A.K., 2010, Determining carbonate concretion formation temperatures and pore water d18O values using the clumped isotope approach. AGU Annual Meeting, San Francisco, CA, oral.

Loyd, S.J., Corsetti, F.A., Berelson, W.M., and Lyons, T.W., 2010, Carbonate-associated sulfate, d34S and d13C analyses of dolomite concretions of the Miocene Monterey Formation: Insights into precipitation environments. GSA Annual Meeting Abstracts with Programs, vol. 42, p. 487. oral.

Loyd, S.J., Corsetti, F.A., Hagadorn, J.W., Kaufman, A.J., and Lyons, T.W., 2010, Sulfate d34S from the Neoproterozoic to the Cambrian: Implications for marine sulfate and a "global" sulfur isotopic signal. Astrobiology Science Convention, League City, TX, oral.

Loyd, S.J., Corsetti, F.A., Berelson, W.M., Lyons, T.W. and Schwalbach, J.R., 2009, Dolomite concretion formation in distinct diagenetic regimes as revealed by combined d34S and d13C analyses of the Miocene Monterey Formation. AGU Annual Meeting, San Francisco, CA, poster.

Loyd, S.J., and Corsetti, F.A., 2009, Sulfur and carbon isotopic composition and carbonate associated sulfate concentration of calcitic concretions of the Upper Cretaceous Holz Shale, Silverado, California. AAPG Pacific Section, Ventura, CA. oral.

Loyd, S.J., Corsetti, F.A., Hagadorn, J.W., Kaufman, A.J., and Lyons, T.W., 2009, Geochemistry of terminal Neoproterozoic units from Caborca, Mexico: Implications for oceanic sulfate and "global" d34S. 6th Annual Southern California Geobiology Symposium, University of California, Riverside. oral (*voted best talk).

Stueeken, E.E., Loyd, S.J., Li, X., Callow, R., de La Torre, J., Berelson, W.M., Corsetti, F., Hanselmann, K., Stevenson, B.S., Spear, J., Pepe-Ranney, C., Beer, L., Dawson, S., and Johnson, H.A., 2008, Exploring the role of filamentous Cyanobacteria in the formation of living silica stromatolites in Yellowstone hot springs. AGU Annual Meeting, Abstract. poster

Loyd, S.J., Corsetti, F.A., Hagadorn, J.W., Kaufman, A.J., Lyons, T.W., and Morales, A.B., 2008, Chemostratigraphic correlation of terminal Neoproterozoic units from Caborca, Mexico. GSA Annual Meeting Abstracts with Programs, vol. 40, p. 309. oral.

Domke, K.L., Loyd, S.J., Corsetti, F.A., Bottjer, D.J., Evans, C., and Lyons, T.W., 2008, Carbonate-associated sulfate from the Precambrian-Cambrian transition in the Western Great Basin, USA. GSA Annual Meeting Abstracts with Programs, vol. 40, p. 133. poster.

Loyd, S.J., Corsetti, F.A., and Berelson, W.M., 2008, New insights into dolomite concretions, Phosphatic Shale Member, Monterey Formation: A novel application of carbonate associated sulfate and d34S. AAPG Pacific Section, Bakersfield, CA. oral, invited.

Loyd, S.J., Corsetti, F.A., and Kaufman, A.J., 2008, Coupled carbon and sulfur isotope excursions in carbonates of Caborca, Mexico: Implications for Ediacaran marine oxygenation. GSA Abstracts with Programs, vol. 40, p. 37. oral.

Loyd, S.J., Corsetti, F.A., and Berelson, W.M., 2008, Dolomite concretion generation in the Phosphatic Shale Member of the Monterey Formation: A novel application of carbonate associated sulfate and d34S. Southern California Geobiology Symposium, University of Southern California. poster.

Loyd, S.J., and Corsetti, F.A., 2007, Carbonate associated sulfate rise recorded in units from Death Valley, USA and Caborca, Mexico: Implications for oceanic oxygenation ca. 580 Ma. Southern California Geobiology Symposium, Cal Tech. poster.

Loyd, S.J., and Corsetti, F.A., 2006, Preferential recrystalization as the origin of lamination in the Neoproterozoic Beck Spring Dolomite, Death Valley, California. GSA Annual Meeting Abstracts with Programs, vol. 38, no. 7, p. 495. poster.