Publications
Mills J.V., Gomes M.L., Kristall B., Sageman B.B., Jacobson A.D., Hurtgen M.T. (2017) Massive volcanism, evaporite deposition, and the chemical evolution of the Early Cretaceous ocean. Geology, v. 45, p. 475-478. Link to ResearchGate here
Kristall B., Jacobson A.D., Hurtgen M.T. (2017) Modeling the seawater radiogenic strontium isotope record: A case stuy of the Late Jurassic-Early Cretaceous. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 472, p. 163-176. Link to ResearchGate here
Pruss S.B., Castagno K.A., Fike D.A., Hurtgen M.T. (2016) Carbon isotope (δ13Ccarb) heterogeneity in deep-water Cambrian carbonates, western Newfoundland. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 458, p. 52-62. Link to ResearchGate here
Holmden C., Jacobson A.D., Sageman B.B., Hurtgen M.T. (2016) Response of the Cr isotope proxy to Cretaceous Ocean Anoxic Event 2 in a pelagic carbonate succession from the Western Interior Seaway. Geochimica et Cosmochimica Acta, v. 186, p. 277-295. Link to ResearchGate here
Gomes M.L., Hurtgen M.T., Sageman B. B. (2016) Biogeochemical sulfur cycling during Cretaceous Ocean Anoxic Events: A comparison of OAE1a and OAE2. Paleoceanography, v. 31, p. 233-251. Link to ResearchGate here
Sim M.S., Ono S., Hurtgen M.T. (2015) Sulfur isotope evidence for low and fluctuating sulfate levels in the Late Devonian ocean and the potential link with the mass extinction event. Earth and Planetary Science Letters, v. 419, p. 52-62. Link to ResearchGate here
Gomes M.L., Hurtgen M.T. (2015) Sulfur isotope fractionation in modern euxinic systems: Implications for paleoenvironmental reconstructions of paired sulfate-sulfide isotope records. Geochimica et Cosmochimica Acta, v. 157, p. 39-55. Link to ResearchGate here
Du Vivier A.D.C., Jacobson A.D., Lehn G.O., Selby D., Hurtgen M.T., Sageman B.B. (2015) Ca isotope stratigraphy across the Cenomanian-Turonian OAE2: links between volcanism, seawater geochemistry, and the carbonate fractionation factor. Earth and Planetary Science Letters, v. 416, p. 121-131. Link to ResearchGate here
Riedman L., Porter S.M., Halverson G.P., Hurtgen M.T., Juniun C.K. (2014) Organic-walled microfossil assemblages from glacial and interglacial Neoproterozoic units of Australia and Svalbard. Geology, v. 42, p. 1011-1014. Link to ResearchGate here
Gomes M.L., Hurtgen M.T. (2013) Sulfur isotope systematics of a euxinic, low-sulfate lake: Evaluating the importance of the reservoir effect in modern and ancient oceans. Geology, v. 41, p. 663-666. Link to ResearchGate here
Swanson-Hysell N.L., Maloof A.C., Kirschvink J.L., Evans D.A.D., Halverson G.P., Hurtgen M.T. (2012) Constraints on Neoproterozoic paleogeography and Paleozoic orogenesis from paleomagnetic records of the Bitter Springs Formation, Amadeus Basin, central Australia. American Journal of Science, v. 312, p. 817-884. Link to ResearchGate here
Hurtgen, M.T. (2012) The marine sulfur cycle. Science, v. 337, p. 305-306. Link to ResearchGate here
Halverson, G.P., Wade, B.P., Hurtgen, M.T., Barovich, K.M. (2010) Neoproterozoic chemostratigraphy. Precambrian Research, v. 182, 337-350. Link to ResearchGate here
Jones, D.S., Maloof, A.C., Hurtgen, M.T., Rainbird, R.H., Schrag, D.P. (2010) Regional and global chemostratigraphic correlation of the Early Neoproterozoic Shaler Supergroup, Victoria Island, Northwestern Canada. Precambrian Research, v. 181, 43-63. Link to ResearchGate here
Swanson-Hysell, N.L., Rose, C.V., Calmet, C.C., Halverson, G.P., Hurtgen, M.T., Maloof, A.C. (2010) Cryogenian glaciation and the onset of carbon-isotope decoupling. Science, v. 328, 608-611. Link to ResearchGate here
Adams, D.D., Hurtgen, M.T., Sageman, B.B. (2010) Volcanic triggering of a biogeochemical cascade during Oceanic Anoxic Event 2. Nature Geoscience, v. 3, 201-204. Link to ResearchGate here
Halverson, G.P., Hurtgen, M.T., Porter, S.M., Collins, A.C. (2010) Neoproterozoic- Cambrian Biogeochemical Evolution. In: Gaucher, C., Sial, A., Halverson, G.P., and Frimmel, H. (Eds.): Neoproterozoic-Cambrian Tectonics, Global Change and Evolution: a focus on southwestern Gondwana. Developments in Precambrian Geology Series, v. 16, Elsevier, p. 351-365. Link to ResearchGate here
Hurtgen M.T., Pruss, S.B., Knoll, A.H., (2009) Evaluating the relationship between the carbon and sulfur cycles in the later Cambrian ocean: An example from the Port au Port Group, western Newfoundland, Canada. Earth and Planetary Science Letters, v. 281, 288-297. Link to ResearchGate here
Halverson G.P., Hurtgen M.T., (2007) Ediacaran growth of the marine sulfate reservoir. Earth and Planetary Science Letters, v. 263, p. 32-44. Link to ResearchGate here
Halverson G.P., Maloof A.C., Schrag D.P., Dudas F., Hurtgen M., (2007) Stratigraphy and geochemistry of a ca 800 Ma negative carbon isotope interval in northeastern Svalbard. Chemical Geology, v. 237, p. 23-45. Link here
Hurtgen M.T., Halverson, G.P., Arthur M.A., Hoffman P.F. (2006) Sulfur cycling in the aftermath of a 635-Ma snowball glaciation: Evidence for a syn-glacial sulfidic deep ocean. Earth and Planetary Science Letters, v. 245, p. 551-570. Link to ResearchGate here
Hurtgen M.T., Arthur M.A., Halverson G.P. (2005) Neoproterozoic sulfur isotopes, the evolution of microbial sulfur species, and the burial efficiency of sulfide as sedimentary pyrite. Geology, v. 33, p. 41-44. Link to ResearchGate here
Ingall E., Kolowith L., Lyons T., Hurtgen M. (2005) Sediment carbon, nitrogen and phosphorus cycling in an anoxic fjord, Effingham Inlet, British Columbia. American Journal of Science, v. 305, p. 240-258. Link here
Hurtgen M.T., Arthur M.A., Prave A.R. (2004) The sulfur isotope composition of carbonate-associated sulfate in Mesoproterozoic to Neoproterozoic carbonates from Death Valley, California, in Amend, J.P., Edwards, K.J., and Lyons, T.W., eds., Sulfur Biogeochemistry-Past and Present: Geological Society of America Special Paper v. 379, p. 177-194. Link here
Hurtgen M.T. (2003) Ancient Oceans and Oxygen. Nature, v. 423, p. 592-593. Link here
Pavlov A.A., Hurtgen M.T., Kasting J.F., Arthur M.A. (2003) Methane-rich Proterozoic atmosphere? Geology, v. 31, p. 87-90. Link to ResearchGate here
Hurtgen M.T., Arthur M.A., Suits N., Kaufman A.J. (2002) The sulfur isotopic composition of Neoproterozoic seawater sulfate: implications for a snowball Earth? Earth and Planetary Science Letters, v. 203, p. 413-429. Link to ResearchGate here
Hurtgen M.T., Lyons T.W., Ingall E.D., Cruse A.M. (1999) Anomalous enrichments of iron monosulfide in euxinic marine sediments and the role of H2S in iron sulfide transformations: examples from Effingham Inlet, the Orca Basin and the Black Sea. American Journal of Science, v. 299, p. 556-588. Link to ResearchGate here
Presentations and Meetings
Sageman B.B., Hurtgen M.T., McElwain J., Adams D., Barclay R.S., Joo Y. (2010) Evidence for volcanic initiation of Cretaceous Oceanic Anoxic Events. Annual America Geophysical Union Meeting, San Francisco, CA. ResearchGate here
Barclay R.S., Joo Y., Adams D., Hurtgen M.T., McElwain J., Sageman B.B. (2010) Reconciling pCO2 estimates and stable isotope records (S & C) with a global carbon cycle model during the Cenomanian-Turonian OAE2. Annual America Geophysical Union Meeting, San Francisco, CA. Link to ResearchGate here
Hurtgen M.T. (2010) The role of sulfur in regulating the exogenic carbon and oxygen cycles. Geological Society of America annual meeting, Denver, CO. Link to ResearchGate here
Gomes M.L., Hurtgen M.T. (2010) Sulfur isotope systematics in a low sulfate, permanently anoxic lake. Geological Society of America annual meeting, Denver, CO. Link to ResearchGate here
Adams D.D., Hurtgen M.T., Sageman B.B. (2010) Highly reactive Fe limitation during Oceanic Anoxic Event 2. Geological Society of America annual meeting, Denver, CO. Link to ResearchGate here
Adams D.D., Hurtgen M.T., Sageman B.B. (2010) Volcanic activation of biogeochemical cascade regulates Oceanic Anoxic Event 2. Goldschmidt, Knoxville, TN. Link to ResearchGate here
Hurtgen M.T., Adams D.D. Sageman B.B., Gomes M.L. (2009) The role of S in regulating the exogenic cycles of C and O on early Earth: Lessons learned from modern lakes and Cretaceous Oceanic Anoxic Event 2. Annual America Geophysical Union Meeting, San Francisco, CA.
Gomes M.L., Hurtgen M.T. (2009) Sulfur isotope systematics and the link between fluctuating sulfate levels and P recycling in a low sulfate, permanently anoxic lake (Lake McCarrons, Mn): Implications for the Precambrian rise of oxygen. Annual America Geophysical Union Meeting, San Francisco, CA.
Gouldey J., Hurtgen M.T., Halverson G.P. (2009) The relationship between the geochemical cycles of carbon and sulfur during the Neoproterozoic interglacial interval. Annual America Geophysical Union Meeting, San Francisco, CA.
Hurtgen M.T., Adams D.D., Sageman B.B. (2009) Volcanic activation of Oceanic Anoxic Event 2 and the role of sulfur in regulating the marine carbon cycle. Geological Society of America annual meeting, Portland, OR.
Joo Y.J., Sageman B.B., Hurtgen M.T. (2009) Carbon, phosphorus, and sulfur cycling during Cenomanian-Turonian OAE2 in Western Interior Seaway. Geological Society of America annual meeting, Portland, OR.
Pruss S., Hurtgen M., Breus A. (2009) Environmental insights into paleobiological patterns of the Cambro-Ordovician Port au Port and St. George Groups, western Newfoundland. Walcott 2009, An international conference on the Cambrian Explosion, Banff, Alberta.
Maloof A.C., Swanson-Hysell N.L., Halverson G.P., Hurtgen M.T., Kirschvink, J.L. (2009) Testing the true polar wander hypothesis for coincident paleomagnetic isotopic and sea level change in the middle Neoproterozoic of Australia. Geological Society of London Fermor Meeting: Rodinia: Supercontinents, Superplumes and Scotland, Edinburg, Scotland.
Sageman B., Hurtgen M., Adams D., Barclay R., Joo Y.J. (2009) OAE’s and the interdependence of P, N and trace metals. Goldschmidt, Davos, Switzerland.
Hurtgen M.T., Halverson G.P., Swanson-Hysell N.L., Maloof A.C. (2008) Early Neoproterozoic sulfur isotopes and the rise (and fall) of oxygen. Annual American Geophysical Union Meeting, San Francisco, CA.
Pruss S.B., Hurtgen M.T., Knoll A.H. (2008) Geochemical insights into paleobiological patterns of the Middle-Upper Cambrian Port au Port Group, western Newfoundland. Annual American Geophysical Union Meeting, San Francisco, CA.
Swanson-Hysell N.L., Maloof A.C., Halverson G.P., Hurtgen M.T. (2008) Covariation of δ13Ccarb and δ13Corg across the Neoproterozoic Bitter Springs Stage. Annual American Geophysical Union Meeting, San Francisco, CA.
Adams D.D., Hurtgen M.T., Sageman B.B., Flaum J.A. (2008) Carbon, sulfur, and iron cycling during the Ceonomanian-Turonian oceanic anoxic event (OAE2). Annual American Geophysical Union Meeting, San Francisco, CA.
Adams D.D., Hurtgen M.T., Sageman B.B., Flaum J.A. (2008) Contrasting sulfur isotope and iron speciation measurements across paleoenvironmental gradients during the Cenomanian-Turonian oceanic anoxic event (OAE2). Geological Society of America annual meeting, Houston, TX.
Halverson G.P., Hurtgen M.T. (2008) A Neoproterozoic oxidation event? Goldschmidt, Vancouver, Canada.
Halverson G.P., Maloof A., Hurtgen M.T. (2008) The Cryogenian section in northwestern Svalbard, IGC, Oslo, Norway.
Adams D.D., Hurtgen M.T., Sageman B.B. (2008) Sulfur isotopes and iron chemistry: Constraining oceanic anoxic event 2 in the Late Cretaceous Western Interior Seaway. Crossroads Geology Conference at Indiana University, February 22, 2008.
Reinhard C., Gilhooly W.P., Lyons T.W., Gill B.C., Planavsky N., and Hurtgen M. (2007) Trace metal cycling in meromictic Mahoney Lake, British Columbia: Implications for molybdenum burial in sulfidic environments. Geological Society of America annual meeting, Denver, CO.
Gilhooly W.P., Reinhard C., Lyons T.W., Planavsky N.J., Gill B., and Hurtgen M.T.(2007) Stable isotopic composition of sulfate in meromictic Mahoney Lake and implications for the early ocean. Geological Society of America annual meeting, Denver, CO.
Hurtgen M.T., Pruss S., Knoll A.H. (2006) Sulfur and carbon isotope systematics in Middle-Upper Cambrian Port au Port Group from western Newfoundland, Canada: Implications for seawater sulfate concentrations. Annual American Geophysical Union Meeting, San Francisco, CA.
Turchyn A. V., Hurtgen M.T., Schrag D.P., Lyons T. (2006) The oxygen isotope composition of carbonate-associated sulfate: Evaluating the efficacy of a relatively new paleoceanographic proxy. Annual American Geophysical Union Meeting, San Francisco, CA.
Adams D.D., Hurtgen M.T., Sageman B.B., Flaum J. (2006) The sulfur isotope composition of carbonate-associated sulfate and pyrite from the middle Cretaceous Western Interior Seaway. Annual American Geophysical Union Meeting, San Francisco, CA.
Lyons T., Gill B., Balci N., Gilhooly W., Reinhard C., Bekker A., Planavsky N., Hurtgen M. (2006) Oxygen isotope composition of carbonate-associated sulfate and the sources and cycling of sulfate in the early ocean. Geological Society of America annual meeting, Philadelphia, PA.
Flaum J.A., Sageman B.B., Meyers S.R., Hurtgen M.T. (2006) Causal mechanisms for OAE’s III: The role of phosphorous? Geological Society of America annual meeting, Philadelphia, PA.
Halverson G.P., Poitrasson F., Hurtgen M.T. (2006) Fe isotope composition of Neoproterozoic cap dolostones: implications for snowball seawater composition? Annual Goldschmidt Conference, Australia.
Hoffman P.F., Halverson G.P., Husson J.M., Hurtgen M.T., Schrag D.P. (2006) Cap carbonate stratigraphy and ocean hyperstratification during meltdown of the Snowball/Slushball Earth in 635 Ma. Snowball Earth Conference 2006, Ascona, Switzerland.
Sageman B.B., Barclay R.S., Dejtrakulwong P., Flaum J., Hurtgen M.T., McElwain J.C. (2006) Multi-proxy approach to understanding the initiation and termination of OAE II. EGU meeting in Vienna.
Hurtgen M.T., Halverson G.P., Arthur M.A., Hoffman P.F. (2005) Sulfur cycling in the aftermath of a Neoproterozoic (Marinoan) snowball glaciation: Evidence for a syn-glacial sulfidic deep ocean. Earth Systems Processes 2, Calgary, Alberta, Canada.
Halverson G.P., Hoffman P.F., Hurtgen M.T. (2005) Ocean hyperstratification following the Marinoan (Neoproterozoic) glaciation. Earth Systems Processes 2, Calgary, Alberta, Canada.
Hurtgen M.T., Arthur M.A., Halverson G.P. (2004) Neoproterozoic S isotopes, evolution of microbial S species and the burial efficiency of sulfide as sedimentary pyrite. Geologic Society of America annual meeting, Denver, CO.
Halverson G.P., Hoffman P., Dudas F., Bowring S.A., Maloof A.C., Hurtgen M.T. (2004) Geochemical evidence for a stratified ocean after a Neoproterozoic (Marinoan) snowball glaciation. Geologic Society of America annual meeting, Denver, CO.
Hurtgen M.T., Arthur M.A. (2003) Neoproterozoic seawater sulfur isotopes and the evolution of microbial sulfur species. American Geophysical Union fall meeting, San Francisco, CA.
Hurtgen M.T., Arthur M.A., Halverson G.P. (2002) Constraining perturbations to the sulfur cycle in the aftermath of snowball Earth: Geochemistry of the Neoproterozoic Maieberg Formation, Namibia. Geologic Society of America annual meeting, Denver, CO.
Hurtgen M.T., Arthur M.A., Kump L.R. (2001) The sulfur isotopic composition of Neoproterozoic seawater sulfate. Geologic Society of America annual meeting, Boston, MA.
Hurtgen M.T., Arthur M.A., Suits N., Kaufman A.J., Prave A.R. (2001) The sulfur isotopic composition of trace sulfate and pyrite associated with Neoproterozoic ‘cap carbonates’ from Namibia, South Australia and Death Valley, California, USA: Implications for a snowball Earth. Earth Systems Processes, Edinburgh, Scotland (invited speaker).
Ingall E.D., Clark L.L., Lyons T.W., Hurtgen M.T. (2000) Organic matter diagenesis in an anoxic fjord, Effingham Inlet (Vancouver Island, British Columbia). American Geophysical Union Ocean Sciences Meeting.
Hurtgen M.T., Arthur M.A., Suits N. (2000) The sulfur isotopic composition of Neoproterozoic seawater sulfate: Implications for a snowball Earth. Geologic Society of America annual meeting, Reno, NV.
Hurtgen M.T., Lyons T.W., Cruse A.M., Ingall E.D. (1998) The role of H2S in iron sulfide transformations; examples from the Orca Basin and Effingham Inlet. Geologic Society of America annual meeting, Toronto, Ontario, Canada.
Hurtgen M.T., Lyons T.W., Cruse A.M., Ingall E.D., Clementz M.T. (1998) Pyrite formation and the anomalous persistence of FeS; a comparative study of the Orca Basin and Effingham Inlet. American Geophysical Union spring meeting, Boston, MA.
Hurtgen M.T., Lyons T.W., Cruse A.M., Ingall E.D., Clark L.L. (1997) Anoxia in sites of rapid accumulation: the modern paradigm for an under-recognized distinctive euxinic environment in the ancient record, Geologic Society of America annual meeting, Salt Lake City, UT.