Julie A Dumoulin, Ph.D.
Carbonate sedimentology, circumpolar correlation, Paleozoic and Mesozoic stratigraphy of central and northern Alaska
Professional Experience
1979 - Present Research Geologist, USGS, Anchorage AK
Education and Certifications
Ph.D. 1991 University of California, Santa Cruz CA Geology
M.S. 1979 University of Wisconsin, Madison WI Geology
B.S. 1976 University of Wisconsin, Madison WI Geology/Anthropology
Affiliations and Memberships*
Alaskan Geological Society
American Association of Petroleum Geologists
Geological Society of America
International Association of Sedimentologists
SEPM (Society for Sedimentary Geology)
Honors and Awards
Graduate Fellowship, National Science Foundation, 1976
Graduate Training Program Award, USGS, 1985
USGS STAR awards for research and service contributions, 1997, 1999 (2), 2005, 2011
USGS Performance awards: 2010, 2011, 2012, 2013
Science and Products
Filter Total Items: 95
Integration of microfacies analysis, inorganic geochemical data, and hyperspectral imaging to unravel mudstone depositional and diagenetic processes in two cores from the Triassic Shublik Formation, Northern Alaska Integration of microfacies analysis, inorganic geochemical data, and hyperspectral imaging to unravel mudstone depositional and diagenetic processes in two cores from the Triassic Shublik Formation, Northern Alaska
The Middle – Upper Triassic Shublik Formation is an organic-rich heterogeneous carbonate-siliciclastic-phosphatic unit that generated much of the oil in the Prudhoe Bay field and other hydrocarbon accumulations in northern Alaska. A large dataset, including total organic carbon (TOC), X-ray diffraction (XRD), X-ray fluorescence (XRF) and inductively coupled plasma – mass spectrometry...
Authors
Katherine J. Whidden, Justin E. Birdwell, Julie A. Dumoulin, Lionel C. Fonteneau, Brigette Martini
U-Pb geochronology and tectonic implications of a Silurian ash in the Farewell Terrane, Alaska U-Pb geochronology and tectonic implications of a Silurian ash in the Farewell Terrane, Alaska
The Farewell terrane is an exotic continental fragment in interior Alaska that during the early Paleozoic was the site of a passive margin. We report a 238U/206Pb zircon age of 432.9±3.0 Ma from a Farewell terrane ash in Mt. McKinley quadrangle, Alaska. This age overlaps with prominent detrital zircon age maxima reported from Silurian and Devonian strata from the Farewell, Arctic Alaska...
Authors
Dwight Bradley, Julie A. Dumoulin, Dan B. Bradley
A revised Triassic stratigraphic framework for the Arctic Alaska Basin A revised Triassic stratigraphic framework for the Arctic Alaska Basin
The Triassic Shublik Formation and the Triassic–Jurassic Otuk Formation are partially age-equivalent lithostratigraphic units that were deposited in the Arctic Alaska Basin (AAB). The Shublik Formation represents proximal deposition within the basin, with episodic siliciclastic input, whereas the Otuk Formation was deposited in the distal part of the basin, with significant intervals of...
Authors
Katherine J. Whidden, Julie A. Dumoulin, William A. Rouse
Sulfur isotopes of host strata for Howards Pass (Yukon–Northwest Territories) Zn-Pb deposits implicate anaerobic oxidation of methane, not basin stagnation Sulfur isotopes of host strata for Howards Pass (Yukon–Northwest Territories) Zn-Pb deposits implicate anaerobic oxidation of methane, not basin stagnation
A new sulfur isotope stratigraphic profile has been developed for Ordovician-Silurian mudstones that host the Howards Pass Zn-Pb deposits (Canada) in an attempt to reconcile the traditional model of a stagnant euxinic basin setting with new contradictory findings. Our analyses of pyrite confirm the up-section 34S enrichment reported previously, but additional observations show parallel...
Authors
Craig A. Johnson, John F. Slack, Julie A. Dumoulin, Karen Duttweiler Kelley, Hendrik Falck
The Mystic subterrane (partly) demystified: New data from the Farewell terrane and adjacent rocks, interior Alaska The Mystic subterrane (partly) demystified: New data from the Farewell terrane and adjacent rocks, interior Alaska
The youngest part of the Farewell terrane in interior Alaska (USA) is the enigmatic Devonian–Cretaceous Mystic subterrane. New U-Pb detrital zircon, fossil, geochemical, neodymium isotopic, and petrographic data illuminate the origin of the rocks of this subterrane. The Devonian–Permian Sheep Creek Formation yielded youngest detrital zircons of Devonian age, major detrital zircon age...
Authors
Julie A. Dumoulin, James V. Jones, Stephen E. Box, Dwight Bradley, Robert A. Ayuso, Paul B. O’Sullivan
Neoproterozoic–early Paleozoic provenance evolution of sedimentary rocks in and adjacent to the Farewell terrane (interior Alaska) Neoproterozoic–early Paleozoic provenance evolution of sedimentary rocks in and adjacent to the Farewell terrane (interior Alaska)
New detrital zircon U-Pb data from the Farewell terrane of interior Alaska illuminate its early provenance evolution and connections with other Alaskan terranes. Five samples come from Neoproterozoic units in the central Farewell terrane. Basal “ferruginous beds” and the overlying Windy Fork Formation have prominent detrital zircon age populations between 2000 and 1800 Ma, with the Windy...
Authors
Julie A. Dumoulin, James V. Jones, Dwight Bradley, Alison B. Till, Stephen E. Box, Paul B. O’Sullivan
Science and Products
Filter Total Items: 95
Integration of microfacies analysis, inorganic geochemical data, and hyperspectral imaging to unravel mudstone depositional and diagenetic processes in two cores from the Triassic Shublik Formation, Northern Alaska Integration of microfacies analysis, inorganic geochemical data, and hyperspectral imaging to unravel mudstone depositional and diagenetic processes in two cores from the Triassic Shublik Formation, Northern Alaska
The Middle – Upper Triassic Shublik Formation is an organic-rich heterogeneous carbonate-siliciclastic-phosphatic unit that generated much of the oil in the Prudhoe Bay field and other hydrocarbon accumulations in northern Alaska. A large dataset, including total organic carbon (TOC), X-ray diffraction (XRD), X-ray fluorescence (XRF) and inductively coupled plasma – mass spectrometry...
Authors
Katherine J. Whidden, Justin E. Birdwell, Julie A. Dumoulin, Lionel C. Fonteneau, Brigette Martini
U-Pb geochronology and tectonic implications of a Silurian ash in the Farewell Terrane, Alaska U-Pb geochronology and tectonic implications of a Silurian ash in the Farewell Terrane, Alaska
The Farewell terrane is an exotic continental fragment in interior Alaska that during the early Paleozoic was the site of a passive margin. We report a 238U/206Pb zircon age of 432.9±3.0 Ma from a Farewell terrane ash in Mt. McKinley quadrangle, Alaska. This age overlaps with prominent detrital zircon age maxima reported from Silurian and Devonian strata from the Farewell, Arctic Alaska...
Authors
Dwight Bradley, Julie A. Dumoulin, Dan B. Bradley
A revised Triassic stratigraphic framework for the Arctic Alaska Basin A revised Triassic stratigraphic framework for the Arctic Alaska Basin
The Triassic Shublik Formation and the Triassic–Jurassic Otuk Formation are partially age-equivalent lithostratigraphic units that were deposited in the Arctic Alaska Basin (AAB). The Shublik Formation represents proximal deposition within the basin, with episodic siliciclastic input, whereas the Otuk Formation was deposited in the distal part of the basin, with significant intervals of...
Authors
Katherine J. Whidden, Julie A. Dumoulin, William A. Rouse
Sulfur isotopes of host strata for Howards Pass (Yukon–Northwest Territories) Zn-Pb deposits implicate anaerobic oxidation of methane, not basin stagnation Sulfur isotopes of host strata for Howards Pass (Yukon–Northwest Territories) Zn-Pb deposits implicate anaerobic oxidation of methane, not basin stagnation
A new sulfur isotope stratigraphic profile has been developed for Ordovician-Silurian mudstones that host the Howards Pass Zn-Pb deposits (Canada) in an attempt to reconcile the traditional model of a stagnant euxinic basin setting with new contradictory findings. Our analyses of pyrite confirm the up-section 34S enrichment reported previously, but additional observations show parallel...
Authors
Craig A. Johnson, John F. Slack, Julie A. Dumoulin, Karen Duttweiler Kelley, Hendrik Falck
The Mystic subterrane (partly) demystified: New data from the Farewell terrane and adjacent rocks, interior Alaska The Mystic subterrane (partly) demystified: New data from the Farewell terrane and adjacent rocks, interior Alaska
The youngest part of the Farewell terrane in interior Alaska (USA) is the enigmatic Devonian–Cretaceous Mystic subterrane. New U-Pb detrital zircon, fossil, geochemical, neodymium isotopic, and petrographic data illuminate the origin of the rocks of this subterrane. The Devonian–Permian Sheep Creek Formation yielded youngest detrital zircons of Devonian age, major detrital zircon age...
Authors
Julie A. Dumoulin, James V. Jones, Stephen E. Box, Dwight Bradley, Robert A. Ayuso, Paul B. O’Sullivan
Neoproterozoic–early Paleozoic provenance evolution of sedimentary rocks in and adjacent to the Farewell terrane (interior Alaska) Neoproterozoic–early Paleozoic provenance evolution of sedimentary rocks in and adjacent to the Farewell terrane (interior Alaska)
New detrital zircon U-Pb data from the Farewell terrane of interior Alaska illuminate its early provenance evolution and connections with other Alaskan terranes. Five samples come from Neoproterozoic units in the central Farewell terrane. Basal “ferruginous beds” and the overlying Windy Fork Formation have prominent detrital zircon age populations between 2000 and 1800 Ma, with the Windy...
Authors
Julie A. Dumoulin, James V. Jones, Dwight Bradley, Alison B. Till, Stephen E. Box, Paul B. O’Sullivan
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government