Thomas D. Hoisch
Professor of Geology
Northern Arizona University
Phone: (928) 523-1904
FAX: (928) 523-9220
1985 Ph. D. in Geological Sciences, University of Southern
1982 M.S. in Geology, Vanderbilt
University, minor in
1979 B.A. in Geology, Pomona
College, cum laude.
Associate Dean for
, College of Engineering, Forestry and Natural Sciences,
Northern Arizona University
School of Earth Sciences and Environmental Sustainability, Northern Arizona
of Geology, Northern
2000-2003 Chair, Department
of Geology, Northern Arizona University
1992-1998 Associate Professor of Geology, Northern
Spring 1995 Research Geologist, U.S. Geological Survey
1988 - 1995 Geologist, WAE (faculty) appointment to the U.S.
1987 - 1992 Assistant Professor of Geology, Northern Arizona
1985 - 1987 National Research Council-U.S. Geological Survey
Research Associate (Denver)
Courses I regularly teach:
- GLG101 Physical Geology
- GLG309 Mineralogy:
Introduction to Earth Materials
- GLG615 Metamorphic Petrology*
- GLG616 Petrologic Phase
*taught every other year in alternate years
In and east of Death Valley
National Park, California
Studies of metamorphic petrology and thermochronology were undertaken in the
Funeral Mountains, California, and at Bare Mountain, Nevada.
The exposed rocks belong to a 13-km thick sedimentary sequence of
Neoproterozoic to Mississippian age. Metamorphism took place when the rocks
were buried by thrusting in Mesozoic time. Deeply buried rocks became exposed
in Miocene time when crustal extension resulted in the development of a
regional detachment fault. The hangingwall slid off to the west-northwest
forming the Grapevine
Mountains and exposing
the metamorphic rocks underneath in the Funeral Mountains
and at Bare Mountain. Studies in this area have
established the pressure and temperature conditions of the metamorphism, the
direction of transport along the fault, and the timing of its movement. For
further information, see publications.
Northwest Utah and Southern
Rocks are being studied in the Raft
Grouse Creek Mountains,
and Albion Range.
All are located in the hinterland of the Sevier orogenic
belt. A series of subhorizontal faults juxtapose metasedimentary packages of
differing age and metamorphic grade. Some of these faults were probably
synconvergent normal faults. Two major shear zones and a Miocene detachment
fault were responsible for the exhumation of the terrain. Studies of this area
involve metamorphic petrology, 2-d numerical thermal modeling,
thermochronology, geologic mapping and structural kinematics. Numerical
simulations of garnet growth in pelitic schist document a pressure increase of
2.5 kb at constant temperature, corresponding to the emplacement of a 9-km
thick thrust sheet (see garnet pictured below). This work is collaborative with
Dr. Michael L. Wells at the University
of Nevada, Las Vegas. For further information, see list of publications.
Graduate Research Opportunites.
Applications are sought for graduate students to pursue projects
on metamorphic rocks associated with the orogenic belts in the western U.S.,
pending availability of funding. Projects typically involve geochonology
(Lu-Hf on garnet, Ar-Ar thermochronology, and other methods), determination of
pressure-temperature paths, numerical thermal modeling, and kinematic analysis,
in collaboration with structual geologist Michael Wells (UNLV), geochemist Jeff
Vervoort (WSU), and others.
featuring my graduate student Cici Cruz-Uribe was published in the Winter 2009
newsletter of the NAU
Wells, M.L., Beyene, M.A., Styger, S., and Vervoort, J.D., 2014,
Jurassic Barrovian metamorphism in a western U.S. Cordilleran
metamorphic core complex, Funeral Mountains, California:
Geology, v. 42. p. 399–402, doi:10.1130/G35352.1
- Stone, P., Stevens, C.H., Howard, K.A., and
Hoisch, T.D., 2013,
Stratigraphy and paleogeographic significance of the
Pennsylvanian-Permian Bird Spring Formation in the Ship Mountains,
southeastern California: U.S.G.S. Scientific Investigations Report
Wells, M.L., and Hoisch, T.D,
2012, Reply to comment by E.L. Miller, A. Konstantinou, and A.
Strickland on “Geodynamics of
synconvergent extension and tectonic mode switching: constraints from
the Sevier-Laramide orogeny.”
Tectonics, 31, TC4016, doi:10.1029/2012TC003136.
- Wells, M.L.,
Cruz-Uribe, A.M., and Vervoort, J.D., 2012,
Geodynamics of synconvergent extension and tectonic mode switching:
constraints from the Sevier-Laramide orogen:
2012, 20 p.
Austin, B.A., Newell, S., and Manone, M.F., 2010, Application of tablet
PCs to lecture demonstrations on mineral optics:
J. Geoscience Education, v. 58, p. 221-231.
and Bowie, J.I., 2010,
Assessing factors that influence the recruitment of majors from
introductory geology classes at Northern Arizona University. J.
Geoscience Education, v. 58, p. 166-176.
2010, Student perceptions of geology and implications for choosing among
different science majors:
Geoscience Currents #36, American Geological Institute.
T.D, Wells, M.L., and Grove, M., 2008, Age trends in garnet-hosted
monazite inclusions from upper amphibolite facies schist from the Grouse
Creek Mountains, Utah. Geochim.
Cosmochim Acta, v. 72, 5505-5520.
M.L., Spell, T.L., Hoisch, T.D., and Zanetti, K.A., 2008, Laserprobe 40Ar/39Ar
dating of strain fringes:
Mid-Cretaceous synconvergent orogen-parallel extension in the interior
of the Sevier orogen: Tectonics, v.
27, TC3012, doi:10.1029/2007TC002153.
Everett, B.C., and
Hoisch T.D, 2008, Conditions of metamorphism of the Colorado Yule
Marble: Mountain Geologist, v. 45,
M.L., and Hoisch, T.D., 2008, The role of mantle delamination in
widespread Late Cretaceous extension and magmatism in the Cordilleran
Geological Society of America Bull., v. 120, p. 515-530.
C.R., Hoisch, T.D., and Wells, M.L., 2007, Construction of a composite
revealing the synorogenic burial and exhumation history of the
U.S.A.: Journal of Metamorphic Geology, v. 25,
T.D., 2005, THERMOD7: A general
two-dimensional numerical modeling program for heat conduction and
advection, with special application to faults. Computers & Geosciences, v. 31,
T.D., Wells, M.L., and Hanson, L.M., 2002, Pressure-temperature paths from
garnet-zoning: evidence for
multiple episodes of thrust burial in the hinterland of the Sevier
orogenic belt: American
Mineralogist, v. 87, p. 115-131.
T.D., 2000, Conditions of metamorphism in lower plate rocks at Bare
Mountain Nevada–Implications for extensional faulting, in Geological
and Geophysical Characterization Studies of Yucca Mountain, Nevada, A
Potential High-Level Radioactive-Waste Repository: U.S. Geological Survey Digital Data
Series 058, CD-ROM Chapter B. download pdf
M.L., Hoisch, T.D., Peters, M.T., Miller, D.M., Wolff, E.D. and Hanson,
L.M., 1998, The Mahogany Peaks fault, a Late Cretaceous-Paleocene normal
fault in the hinterland of the Sevier Orogen: Journal of Geology, v. 106, p. 623-634.
M.L., Hoisch, T.D., Hanson, L.M, Wolff, E.D, and Struthers, J., 1997,
Large magnitude crustal thickening and repeated extensional exhumation in
the Raft River, Grouse Creek, and AlbionMountains, Brigham Young
University Geological Studies, v. 42, pt. 1, p. 325-340.
T.D., Heizler, M.T., and Zartman, R.E., 1997, Timing of detachment
faulting in the Bullfrog Hills and Bare Mountain area, southwest
Nevada: Inferences form 40Ar/39Ar,
K-Ar, U-Pb, and fission track thermochronology: Journal of Geophysical Research, v. 102,
F.W., Fridrich, C.J., Hoisch, T.D., and Hamilton, W.B., 1996, A synthesis
of detachment fault studies in the
region; FOCUS '95, Proceedings of the Topical Meeting on Methods of
seismic hazards evaluation,
American Nuclear Society, Inc.,
T.D., 1995, Chapter 2: Conditions
of metamorphism in lower plate rocks at
for extensional faulting, in Simonds, F.W., ed., Characterization of
detachment faults in the
summary report for site characterization plan 126.96.36.199.4.5: U.S. Geological Survey administrative
report for milestone number 3GTD500M, p. 16-47.
T.D., 1995, Chapter 3: Timing of
detachment faulting west of
Simonds, F.W., ed., Characterization of detachment faults in the
Mountain region, summary report for
site characterization plan 188.8.131.52.4.5:
U.S. Geological Survey administrative report for milestone number
3GTD500M, p. 48-76.
D.M., and Hoisch, T.D., 1995, Jurassic tectonics of northeastern
from the perspective of barometric studies: Geol. Soc. America Special Paper 299, p.
D.A., and Hoisch, T.D., 1994, Multiple intrusions and low pressure
metamorphism in the central
California: J. Metamorphic Geol., v. 12, p. 723-734.
D.A., Karlstrom, K.E., Hoisch, T.D., and Morrison, J.M., 1994,
Determination of synkinematic plutonism from fluid-infiltrated rocks,
Old Woman Mountains,
California: J. Metamorphic Geol., v. 12, p. 709-722.
S.M., Ballard, S.N., Boettcher, S.S., Hamilton, W.B., Hoisch, T.D., and
Tosdal, R.M., 1994, Mesozoic tectonics of the Maria belt, west-central
Arizona and southeasthern California, in McGill, S.F. and Ross, T.M.,
eds., Geological Investigations of an Active Margin, Cordilleran Section
Guidebook: San Bernardino County
Museum Association, San Bernardino, California, p. 272-292.
J., and Hoisch, T.D., 1994, Outward flow of magmatic fluids from the Old
Woman granodiorite, Old Woman Mountains, southeastern California: Journal of Geophysical Research, v. 99,
T.D., and Simpson, C., 1993, Rise and tilt of metamorphic rocks in the
lower plate of a detachment fault in the Funeral Mountains, Death Valley,
California: Journal of Geophysical
Research, v. 98, p. 6805-6827.
T.D., 1992, Thermodynamic properties of muscovite and biotite: inferences from natural compositions:
Trends in Mineralogy, v. 1, p. 107-115 (invited).
L.D., Morgan, P., and Hoisch, T.D., 1992, Tectonics and heat sources for
granulite metamorphism of supracrustal-bearing terranes: Precambrian Research, v. 55, p. 525-538.
D.M., and Hoisch, T.D., 1992, Mesozoic structure, metamorphism, and
magmatism in the Pilot Range and the Toano Range, in Wilson, J.R., ed.,
Field guide to geologic excursions in Utah and adjacent areas of Nevada,
Idaho, and Wyoming: Utah
Geological Survey Misc. Pub. 92-3, p. 79-92.
D.A., Miller, C.F.,
Harrison, M., and
Hoisch, T.D., 1992, 40Ar/39Ar
thermochronology of the
with implications for Mesozoic shortening, metamorphism, and denudation:
Geol. Soc. America Bulletin, v. 104, p. 176-191.
T.D., 1991, The thermal effects of pervasive and channelized fluid flow in
the deep crust: Journal of Geology,
v. 99, p. 69-80.
T.D., 1991, Equilibria within the mineral assemblage quartz + muscovite +
biotite + plagioclase + garnet, and implications for the mixing properties
of octahedrally-coordinated cations in muscovite and biotite:
Contributions to Mineralogy and Petrology, v. 108. p. 43-54.
W., 1990, A granite origin by fluid-induced anatexis, in Miller, C.F.,
ed., FROGS (Friends of Granites) Report:
Transactions, American Geophysical Union, v. 71, p. 694.
T.D., 1990, Empirical calibration of six geobarometers for the mineral
assemblage quartz + muscovite + biotite + garnet + plagioclase: Contributions to Mineralogy and
Petrology, v. 104, p. 225-234.
T.D., 1989, A muscovite biotite geothermometer: American Mineralogist, v. 74, p.
T.D., Miller, C.F., Heizler, T.M., Harrison, M.T., and Stoddard, E.F.,
1988, Late Cretaceous regional metamorphism in southeastern California, in
Ernst, W.G., ed., Metamorphic and Crustal Evolution of the Western United
States, Rubey Volume VII: Prentice
Hall, Englewood Cliffs, New Jersy, p. 538 571.
T.D., 1987, Heat transport by fluids during Late Cretaceous regional
metamorphism in the
California: Geol. Soc. of America Bulletin, v. 98,
p. 549 553.
T.D., 1985, The solid solution chemistry of vesuvianite: Contributions to Mineralogy and
Petrology, v. 89, p. 205 214.
C.F., Howard, K.A., and Hoisch, T.D., 1982, Mesozoic thrusting,
metamorphism, and plutonism, Old Woman-Piute, southeastern California, in
Frost, E.G., and Martin, D.L., eds., Mesozoic-Cenozoic tectonic evolution of
the Colorado River region, California, Arizona, and Nevada: San Diego, Cordilleran Publishers, p.
- David A.
Rothstein, 1990, Geology of the Scanlan Shear Zone, Central Old Woman
Mountains, southeastern California. 153 p.
- William Hoyt,
1992, Geology of the Cowpie Peak and Mercury Mountain areas, Northern Old
Woman Mountains, southeastern California. 108 p.
- Laura J.
Wagner, 1994, Petrology of massive wollastonite rocks in the Big Maria
Mountains, southeastern California. 116 p.
- James Harvey,
1994, Sapphirine-bearing amphibolites in the Okanogan Complex, Washington:
Thermobarometry and tectonic implications. 237 p.
- Lori M.
Hanson, 1997, Metamorphic petrology of pelitic schist from the Raft River
and Grouse Creek Mountains, northwest Utah. 237 p.
- Evan D.
Wolff, 1997, Geothermometry and thermal evolution of the Raft River
Mountains, Utah. 156 p.
- Stephanie L.
Dudash, 2001, Polymetamorphism of >2.5 Ga pelitic schist in the Grouse
Creek Mountains, northwestern Utah. 256 p.
- Caroline R.
Harris, 2003, A pressure-temperature path of repeated thrusting and
exhumation in the Sevier hinterland, Albion Mountains, Idaho. 207 p.
- Eric D.
Kelly, 2004, Pressure-temperature paths and isotopic dating along a major
thrust, Sevier hinterland, Albion Mountains, Idaho. 154 p.
- Sheena Styger, 2008,
Composite pressure-temperature paths from the Funeral Mountains,
Death Valley, southeastern California. 183 p.
Marci Wills, 2014, A metamorphic
pressure-temperature-time path from the Wood Hills, Elko County, eastern
Nevada. 108 p.