Sequence stratigraphy, chronostratigraphy, zircon geochronology, geologic mapping
Education and/or Training
M.S. 2006, University of California at Santa Barbara (UCSB), CA: Geological Sciences
B.S. with Honors, 2005, UCSB, CA: Geological Sciences
Projects and/or Research Interests
My stratigraphic research intends to further resolve the geologic histories of Alaska's energy-resource-bearing sedimentary basins by examining the strata that fill them. Sequence stratigraphy and zircon geochronology, as well as geologic mapping, are essential to this work. I also collaborate with academic, government agency, and industry geoscientists to broaden the expertise and perspectives that the DGGS Energy Resources section applies to its projects. My current focus is on chronostratigraphic applications of highly precise and accurate U-Pb dates obtained from detrital and tephra zircon; these efforts are improving our understanding of the strengths and challenges of maximum depositional ages and bringing Bayesian age-depth modeling to bear on our basin analysis studies. My current projects range from Cook Inlet of southern Alaska to the North Slope of northern Alaska.
Professional Experience
2023-present, Research Stratigrapher, State of Alaska, Division of Geological & Geophysical Surveys, Fairbanks, AK
2018-2023, Senior Geologist, State of Alaska, Division of Geological & Geophysical Surveys, Fairbanks, AK
2009-2018, Geologist, State of Alaska, Division of Geological & Geophysical Surveys, Fairbanks, AK
2007-2008, Environmental Consultant, Fairbanks, AK
2005-2006, Research and Teaching Assistant, Department of Earth Science, UCSB
2005, Research Intern, Cascades Volcano Observatory, United States Geological Survey (USGS), Vancouver, WA
Selected Professional Activities
2023, Topical Session Chair: Maximum Depositional Ages (MDAs) from Detrital Mineral Geochronology, Geological Society of America annual meeting (Connects 2023)
2021, Principal Investigator, STATEMAP, Geologic mapping of the Racetrack Basin area, central North Slope, Alaska
2020, Principal Investigator, STATEMAP, Geologic mapping of the Rooftop Ridge area, central North Slope, Alaska
2019, Principal Investigator, STATEMAP, Geologic mapping of the Big Bend area, central North Slope, Alaska
2018-2020, Board of Directors, Alaska Geological Society
2017, 2018, Invited Speaker, University of Alaska Fairbanks and Alaska Geological Society: Sequence-stratigraphic framework of the Middle Jurassic Chinitna Formation, Cook Inlet forearc basin, south-central Alaska (doi:10.14509/30031)
2016, Volume Editor: Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska (doi:10.14509/29532)
2015, Invited Speaker, Alaska Geological Society and University of Alaska Fairbanks: Sequence stratigraphic framework of the Upper Jurassic Naknek Formation, Cook Inlet forearc basin, south-central Alaska (doi:10.14509/29551)
2015, Theme Session Co-Chair: Tectonics, Sedimentation, and Energy Resource Potential of the Northern Cordillera, Geological Society of America Cordilleran Section annual meeting
2014-2016, Chairperson, Field Operations Safety Committee, DGGS
2012-2014, Board of Directors, Alaska Geological Society
AWARDS AND RECOGNITION
2017, Young Professional Distinguished Service Award, Pacific Section-American Association of Petroleum Geologists
2015, Geologist at Work! Award, DGGS
2014, Gold Pencil Award to Herriott and others (doi:10.14509/27261), DGGS
2006, Lloyd and Mary Edwards Field Studies Fellowship, Department of Earth Science, UCSB
2005, Outstanding Senior Award, Department of Earth Science, UCSB
2005, Outstanding Academic Achievement Award, Department of Earth Science, UCSB
2005, John Woolley Scholarship, Coast Geological Society
2005, Awardee, USGS-NAGT research internship
2004, Nominee, USGS-National Association of Geoscience Teachers (NAGT) research internship
2004, Robert M. Norris Prize in Field Geology, Department of Geological Sciences, UCSB
AFFILIATIONS AND SERVICE
Member, Geological Society of America (GSA)
Member, GSA Geochronology Division
Member, Alaska Geological Society
Journal Peer-Reviewer: Geosphere, Geology, Geochronology, Geoscience Frontiers, Basin Research
Selected Publications
- Gillis, R.J., Wartes, M.A., Herriott, T.M., LePain, D.L., Benowitz, J.A., Wypych, Alicja, Donelick, R.A., O'Sullivan, P.B., and Layer, P.W., 2022, 40Ar/39Ar and U-Pb geochronology of Cretaceous-Paleocene igneous rocks and Cenozoic strata of northwestern Cook Inlet, Alaska: Linkages between arc magmatism, cooling, faulting, and forearc subsidence: Alaska Division of Geological & Geophysical Surveys Professional Report 125 v. 1.1, 78 p. https://doi.org/10.14509/30554
- Herriott, T.M., Wikstrom Jones, K.M., Wolken, G.J., and Willingham, A.L., 2020, Photogrammetry-derived digital surface model and orthoimagery of the Usibelli Group type section, Suntrana Creek, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2020-2, 5 p. https://doi.org/10.14509/30425
- Willingham, A.L., and Herriott, T.M., 2020, Photogrammetry-derived digital surface model and orthoimagery of Slope Mountain, North Slope, Alaska, June 2018: Alaska Division of Geological & Geophysical Surveys Raw Data File 2020-1, 9 p. https://doi.org/10.14509/30419
- Herriott, T.M., Crowley, J.L., Schmitz, M.D., Wartes, M.A., and Gillis, R.J., 2019, Exploring the law of detrital zircon: LA-ICP-MS and CA-TIMS geochronology of Jurassic forearc strata, Cook Inlet, Alaska, USA: Geology, v. 47.
https://doi.org/10.1130/G46312.1
- Herriott, T.M., Wartes, M.A., O'Sullivan, P.B., and Gillis, R.J., 2019, Detrital zircon maximum depositional dates for the Jurassic Chinitna and Naknek Formations, lower Cook Inlet, Alaska: A preliminary view: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-5, 11 p. https://doi.org/10.14509/30180
- Helmold, K.P., Wartes, M.A., Gillis, R.J., LePain, D.L., Herriott, T.M., Stanley, R.G., and Wilson, M.D., 2018, Secular changes in Cenozoic arc magmatism recorded by trends in forearc-basin sandstone composition, Cook Inlet, southern Alaska, in Ingersoll, R.V., Lawton, T.F., and Graham, S.A., eds., Tectonics, Sedimentary Basins, and Provenance: A Celebration of William R. Dickinson's career: Geological Society of America, Special Paper 50, p. 591-615. https://doi.org/10.1130/2018.2540(26)
- Herriott, T.M., Wartes, M.A., Decker, P.L., Gillis, R.J., Shellenbaum, D.P., Willingham, A.L., and Mauel, D.J., 2018, Geologic map of the Umiat-Gubik area, central North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2018-6, 55 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/30099
- Herriott, T.M., and Wartes, M.A., 2017, Discovery of a 35-meter-thick, oil-stained sandstone interval in outcrop of the Tonnie Siltstone Member, Chinitna Formation, lower Cook Inlet, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-5, 12 p. https://doi.org/10.14509/29837
- Herriott, T.M., Wartes, M.A., and Decker, P.L., 2017, Deep-water canyons and sequence-stratigraphic framework of the Upper Jurassic Naknek Formation, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2017-4, 53 p. https://doi.org/10.14509/29707
- Newberry, R.J., Herriott, T.M., Wartes, M.A., Gillis, R.J., and Wypych, Alicja, 2016, Major-oxide and trace-element geochemistry of mafic rocks in the Carboniferous Lisburne Group, Ivishak River area, northeastern Brooks Range, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2016-2, 2 p. https://doi.org/10.14509/29563
- Herriott, T.M., ed., 2016, Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1, 78 p. https://doi.org/10.14509/29532
- Herriott, T.M., 2016, Introduction to petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-1, p. 1-8. https://doi.org/10.14509/29534
- Herriott, T.M., Wartes, M.A., Decker, P.L., and Harun, N.T., 2016, Preliminary stratigraphic architecture of the Middle Jurassic Paveloff Siltstone Member, Chinitna Formation, Tuxedni Bay area, Cook Inlet, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-5, p. 39-44. https://doi.org/10.14509/29539
- Herriott, T.M., Wartes, M.A., and Decker, P.L., 2016, Record of a Late Jurassic deep-water canyon at Chisik Island, south-central Alaska: Further delineation of Naknek Formation depositional systems in lower Cook Inlet, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-6, p. 45-49. https://doi.org/10.14509/29540
- Wartes, M.A., and Herriott, T.M., 2015, Oil-stained sandstone in the Middle Jurassic lower Paveloff Siltstone Member of the Chinitna Formation: Exploring the potential role of facies variations in controlling diagenesis and reservoir quality in western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-7, 9 p. https://doi.org/10.14509/29533
- Wartes, M.A., Decker, P.L., Herriott, T.M., and Helmold, K.P., 2015, Preliminary facies analysis of the lower sandstone member of the Upper Jurassic Naknek Formation, northern Chinitna Bay, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-8, p. 49-55. https://doi.org/10.14509/29463
- Herriott, T.M., Decker, P.L., and Wartes, M.A., 2015, Evidence of a submarine canyon in the Snug Harbor Siltstone and Pomeroy Arkose Members, Naknek Formation, south-central Alaska: Implications for the distribution of coarse-grained sediment in Upper Jurassic strata of Cook Inlet, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-9, p. 57-62. https://doi.org/10.14509/29464
- Gillis, R.J., Herriott, T.M., and Tsigonis, R.M., 2015, Preliminary results of reconnaissance structural studies of the western Susitna basin, south-central Alaska, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-5, p. 25-34. https://doi.org/10.14509/29469
- Herriott, T.M., and Wartes, M.A., 2014, Geologic-mapping-based observations of the Middle Jurassic Chinitna Formation and Upper Jurassic Naknek Formation in the Tilted Hills, Iniskin Peninsula, Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-3, 23 p. https://doi.org/10.14509/27305
- Gillis, R.J., Wartes, M.A., Herriott, T.M., Bull, K.F., Decker, P.L., and Betka, P.M., 2014, Overview of new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-1, p. 3-6. https://doi.org/10.14509/27306
- Herriott, T.M., and Wartes, M.A., 2014, Brief overview of geologic mapping of the Middle Jurassic Chinitna Formation and Upper Jurassic Naknek Formation in the Tilted Hills, Iniskin Peninsula, Cook Inlet, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-2, p. 7-11. https://doi.org/10.14509/27307
- Wartes, M.A., and Herriott, T.M., 2014, A new occurrence of oil-stained rocks within a small fault zone involving the Middle Jurassic Cynthia Falls Formation, Tuxedni Group, northern Iniskin Peninsula, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-5, p. 23-27. https://doi.org/10.14509/27310
- Wartes, M.A., and Herriott, T.M., 2014, Discovery of oil-stained sandstone within the Chinitna Formation, northern Iniskin Peninsula, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-6, p. 29-31. https://doi.org/10.14509/27311
- Herriott, T.M., Nye, C.J., Reger, R.D., Wartes, M.A., LePain, D.L., and Gillis, R.J., 2014, Geologic context, age constraints, and sedimentology of a Pleistocene volcaniclastic succession near Mount Spurr volcano, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2014-2, 35 p. https://doi.org/10.14509/27261
- Gillis, R.J., Stanley, R.G., LePain, D.L., Mauel, D.J., Herriott, T.M., Helmold, K.P., Peterson, C.S., Wartes, M.A., and Shellenbaum, D.P., 2013, Status of a reconnaissance field study of the Susitna basin, 2011: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-4, 8 p. https://doi.org/10.14509/25015
- Wartes, M.A., Gillis, R.J., Herriott, T.M., Stanley, R.G., Helmold, K.P., Peterson, C.S., and Benowitz, J.A., 2013, Summary of 2012 reconnaissance field studies related to the petroleum geology of the Nenana basin, interior Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-2, 13 p. https://doi.org/10.14509/24880
- Stanley, R.G., Herriott, T.M., LePain, D.L., Helmold, K.P., and Peterson, C.S., 2013, Reconnaissance studies of potential petroleum source rocks in the Middle Jurassic Tuxedni Group near Red Glacier, eastern slope of Iliamna Volcano, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1B, p. 5-9. https://doi.org/10.14509/24845
- Stanley, R.G., Herriott, T.M., Helmold, K.P., Gillis, R.J., and Lillis, P.G., 2013, Hydrocarbon-bearing sandstone in the Upper Jurassic Naknek Formation on the south shore of Kamishak Bay, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1E, p. 19-23. https://doi.org/10.14509/24848
- Wartes, M.A., Decker, P.L., Stanley, R.G., Herriott, T.M., Helmold, K.P., and Gillis, R.J., 2013, Preliminary stratigraphy and facies analysis of the Upper Cretaceous Kaguyak Formation, including a brief summary of newly discovered oil stain, upper Alaska Peninsula, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1F, p. 25-32. https://doi.org/10.14509/24849
- Wartes, M.A., Herriott, T.M., Helmold, K.P., and Gillis, R.J., 2013, Preliminary stratigraphic interpretation of the Naknek Formation: Evidence for Late Jurassic activity on the Bruin Bay fault, Iniskin Peninsula, lower Cook Inlet, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1H, p. 39-46. https://doi.org/10.14509/24851
- Flynn, J.J., Charrier, R., Croft, D.A., Gans, P.B., Herriott, T.M., Wertheim, J.A., and Wyss, A.R., 2008, Chronologic implications of new Miocene mammals from the Cura-Mallín and Trapa Trapa Formations, Laguna del Laja area, south central Chile: Journal of South American Earth Sciences, vol. 26, issue 4, p. 412-423.
- Herriott, T.M., Sherrod, D.R., Pallister, J.S., and Vallance, J.W., 2008, Photogeologic maps of the 2004-2005 Mount St. Helens eruption, in Sherrod, D.R., Scott W.E., and Stauffer, P.H., eds., A volcano rekindled: The renewed eruption at Mount St. Helens, 2004-2006: U.S. Geological Survey, Professional Paper 2008-1750, Chapter 10, p. 209-224. http://pubs.er.usgs.gov/publication/pp175010
- Thornber, C.R., Pallister, J.S., Rowe, M.C., McConnell, S., Herriott, T.M., Eckberg, A., and others, 2008, Catalog of Mount St. Helens 2004-2007 dome samples with major- and trace-element chemistry: U.S. Geological Survey, Open-File Report 2008-1130, 9 p. http://pubs.er.usgs.gov/publication/ofr20081130
- Herriott, T.M., 2006, Stratigraphy, structure, and 40Ar/39Ar geochronology of the southeastern Laguna del Laja area--Implications for the mid-late Cenozoic Evolution of the Andes near 37.5°S, Chile: Santa Barbara, California, University of California at Santa Barbara, M.S. thesis, 97 p.
Selected Presentations
- Herriott, T.M., Crowley, J.L., Wartes, M.A., LePain, D.L., and Schmitz, M.D., 2022, LA-ICPMS–CA-TIMS tandem dating of detrital zircon: Insights from n=1 MDAs of mid-Cretaceous Colville foreland basin strata, Slope Mountain, northern Alaska (presentation): Geological Society of America, Annual Meeting, Denver, Colorado, October 9-12, 2022: Alaska Division of Geological & Geophysical Surveys, 13 p. https://doi.org/10.14509/30912
- Herriott, T.M., Crowley, J.L., Schmitz, M.D., Wartes, M.A., and Gillis, R.J., 2019, Exploring the law of detrital zircon in Alaska’s Cook Inlet: LA-ICPMS and CA-TIMS geochronology of Jurassic forearc strata (presentation): Geological Society of America, Annual Meeting, 22–25 September 2019, Phoenix, Arizona: Alaska Division of Geological & Geophysical Surveys, 16 p. https://doi.org/10.14509/30269
- Herriott, T.M., Wartes, M.A., Stanley, R.G., Decker, P.L., Helmold, K.P., and Harun, N.T., 2017, Stratigraphy and sedimentology of the Chinitna Formation, Iniskin-Tuxedni bays area, south-central Alaska -- Late Middle Jurassic depositional systems and petroleum prospectivity in Cook Inlet forearc basin (poster): American Association of Petroleum Geologists, Pacific Section Annual Meeting, Anchorage, AK, 22–24 May 2017: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/29757
- Herriott, T.M., Wartes, M.A., and Decker, P.L., 2015, Sequence stratigraphic framework of the Upper Jurassic Naknek Formation, Cook Inlet forearc basin, south-central Alaska (presentation): Alaska Geological Society, 17 November 2015, Anchorage, Alaska: Alaska Division of Geological & Geophysical Surveys, 73 p. https://doi.org/10.14509/29551
- Herriott, T.M., Wartes, M.A., Decker, P.L., Gillis, R.J., Shellenbaum, D.P., Mauel, D.J., and Helmold, K.P., 2015, Geologic map of the Umiat-Gubik area, central North Slope, Alaska - Integration of fieldwork and subsurface data in a region of known oil and gas accumulations (poster): Geological Society of America, Cordilleran Section Annual Meeting, May 11-13, 2015, Anchorage, Alaska: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/29442
- Herriott, T.M., Wartes, M.A., and Decker, P.L., 2015, Deep-water canyons in the Snug Harbor Siltstone and Pomeroy Arkose Members, Naknek Formation, Alaska - New insights into the sequence stratigraphy of the Late Jurassic Cook Inlet forearc basin (presentation): Geological Society of America, Cordilleran Section Annual Meeting, May 11-13, 2015, Anchorage, Alaska: Alaska Division of Geological & Geophysical Surveys, 37 p. https://doi.org/10.14509/29443
- Herriott, T.M., Wartes, M.A., Stanley, R.G., Lillis, P.G., Helmold, K.P., Decker, P.L., and Gillis, R.J., 2013, Oil-stained sandstones of the Upper Jurassic Naknek Formation and Upper Cretaceous Kaguyak Formation, Kamishak Bay area, lower Cook Inlet, Alaska (poster): AAPG Pacific Section Meeting, Monterey, CA, April 23, 2013: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/25139
- Herriott, T.M., Wartes, M.A., Gillis, R.J., Decker, P.L., Wallace, W.K., Loveland, A.M., Reifenstuhl, R.R., and LePain, D.L., 2011, Detailed geologic mapping and overview of structural and stratigraphic studies in the east-central North Slope foothills, Alaska (poster): 3P Arctic, The Polar Petroleum Potential Conference, 30 August–-2 September 2011, Halifax, Nova Scotia, Canada: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/27041
- Herriott, T.M., Wartes, M.A., Newberry, R.J., Wallace, W.K., and Gillis, R.J., 2011, Geology, geochemistry, and regional implications of mafic igneous rocks in the Carboniferous Lisburne Group, Ivishak River area, northeastern Brooks Range, Alaska (poster): The Sixth International Conference on Arctic Margins, 31 May-2 June 2011, Fairbanks, Alaska: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/29562
- Herriott, T.M., Wartes, M.A., Decker, P.L., Wallace, W.K., Gillis, R.J., Reifenstuhl, R.R., and Speeter, G.G., 2011, Structural and stratigraphic implications of detailed geologic mapping of Ellesmerian and Brookian units in the Echooka and Ivishak rivers region, east-central North Slope, Alaska (poster): AAPG Pacific Section Meeting, Anchorage, Alaska, May 10, 2011: Alaska Division of Geological & Geophysical Surveys, 1 sheet. https://doi.org/10.14509/22802
- Herriott, T.M., Nye, C.J., Reger, R.D., Wartes, M.A., LePain, D.L., and Gillis, R.J., 2011, Sedimentology, age, and geologic context of a Pleistocene volcaniclastic succession near Spurr volcano, Alaska (presentation): AAPG Pacific Section Meeting, Anchorage, Alaska, May 10, 2011: Alaska Division of Geological & Geophysical Surveys, 29 p. https://doi.org/10.14509/22503
- Herriott, T.M., Charrier, R., Croft, D.A., Flynn, J.J., Gans, P.B., Wertheim, J.A., and Wyss, A.R., 2006, Geologic mapping, sedimentology, structure, and 40Ar/39Ar geochronology of the southeast Laguna del Laja area, Central Andes, Chile (37°30' S 71°15'W): Backbone of the Americas--Patagonia to Alaska, Mendoza, Argentina, 3-7 April 2006: Geological Society of America, Specialty Meetings Abstracts with Programs (2), p. 66-67.
- Herriott, T.M., Pallister, J.S., and Vallance, J.W., 2005, Photogeologic mapping of the 2004-2005 Mount St. Helens eruption: American Geophysical Union annual meeting, Eos, Transactions v. 86, no. 52, supplement, San Francisco, California, 5-9 December 2005.
