Harold Stowell
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Professor Petrology and Tectonics +1 205 348-5098 |
Research
Accretion of Magmatic Arcs and the Growth of Continents
Partial Melting and Evolution of Mid to Lower Crust in Magmatic Arcs
Nucleation and Growth of Porphyroblasts in Metamorphic Rocks
Duration and Rates of Tectonic Processes
Pressure-Temperature-Time Paths for Metamorphism
Phase Diagram Sections for Metamorphic Rocks
Garnet Sm-Nd Geochronology
Research Tools
Isotope Geochronometers: Garnet Sm-Nd, Zircon U-Pb
Electron Probe Microanalysis
X-ray Fluorescence Spectrometry
Phase Diagram Sections & Thermodynamic Datasets
Field Trips
From Craton to Accreted Terranes: Regional Geology Class Trip, May 2010
Structural & Lithological Divisions of the Southernmost Appalachians: Tectonics Class Field Trip, October 2008
Current Students
Matthew Gatewood [Ph.D.]: Using Garnet Major Element and Isotopic Zoning as a Tool to Evaluate the Scales of Equilibrium in Metamorphic Rocks and the Rates of Tectonic Processes
Robert Holler [M.S.]: Metamorphism of the Wenatchee Ridge Orthogneiss, Washington: Application of Sm-Nd and U-Pb Chronology and Phase Equilibrium Modeling
Crystal Hout [M.S.]: Eclogite metamorphism, Fiordland, New Zealand
Jeffrey Madden [M.S.]:
Former Students
Gerrit Bulman [M.S.]: Tectonic Evolution of the Labyrinth Mountain Area, Cascades Crystalline Core, Washington: Unraveling Intertwined Deformation, Intrusion and Metamorphism, CH2MHill
Rebecca Chace [M.S.]: Samarium-Neodymium Garnet Geochronology and Silicate Mineral Thermobarometry in The Nason And Chelan Mountains Terranes of the North Cascades, Washington
Karen Inman [M.S.]: Thermobarometric Constraints on the Emplacemnet Conditions of the Epidote-Bearing Grand Island Pluton Near Juneau, SE Alaska
Matthew McKay [M.S.]: Petrology and Samarium-Neodymium Geochronology of the Eastern Salmon River Belt, West Central Idaho: Timing of Island Arc Accretion and Tectonic Implications, Ph.D. student University of West Virginia
Karen Parker [M.S.]: Geochronology and P-T Conditions of Mid-to Lower Crustal Processes in a Cretaceous Magmatic Arc, Fiordland, New Zealand, Lecturer University of Alabama
Chris Ridgway [M.S.]: Metamorphism, Deformation, and Metasomatism Near the rand Island Diorite Complex, Southeast Alaska, Vulcan Materials Corp., Birmingham, AL
Ellen Stein [M.S.]: Origin and significance of plagioclase on garnet coronas, Nason terrane, North Cascades, Washington, USA: Pseudosection modeling and X-ray computed tomography
Dave Taylor [M.S.]: Samarium-Neodymium Garnet Geochronology And Silicate Mineral Thermobarometry of Late Cretaceous Metamorphism, Garnet Ledge, Southeast Alaska
Doug Tinkham [Ph.D.]: Phase equilibria, garnet activity modeling, and garnet samarium-neodymium chronology: applications to the Waterville Formation, Maine, and south-central Nason terrane, Washington, Associate Professor, Laurentian University, Sudbury CAN
John Towns [M.S.]: Volcanoes and glaciers: dating of glaciovolcanic eruptions and Pleistocene ice-sheet distributions, southwestern British Columbia, Canada, presently CH2MHill
Marion Wiggins [M.S.]: Mineralogy and Geochemistry of Alteration at the Kensington Gold Deposit, Southeastern Alaska , Vulcan Materials Corp., Winston-Salem, NC
Carlos Zuluaga [Ph.D.]: Thermodynamic modeling applied to metamorphic processes in migmatites: an example form the Nason Ridge Migmatitic Gneiss (Cascades Core, WA) , Assistant Professor, National University of Colombia, Bogota
Teaching
Mineralogy [GEO210]: 4 semester hours, includes optical and hand sample labs
Regional Geology [GEO 490/590]: 1-3 semester hours, includes 5-10 day field trips, Recent trips include:
Stratigraphic and structural record of evaporite diapirism, La Popa
basin and Coahuila foldbelt, Mexico, and
From Craton to Accreted Terranes: Idaho, Oregon & Washington
Geologic Field & Writing Techniques [GEO492]: 2 semester hours, includes field trips throughout Alabama
Field Geology [GEO495]: 6 semester hours, taught in New Mexico and Colorado
Metamorphic Petrology [GEO 515]: 3 semester hours
Tectonics Seminar [GEO 534/634]: 1 semester hour
Isotope Geology [GEO 650]: 3 semester hours
Lindblad & National Geographic Trips
Southeastern Alaska: Inside Passage
Svalbard: Land of the Ice Bear; Beyond The North Cape: Norway’s Fjords & Arctic Svalbard
Antarctica: The White Continent: Antarctica, South Georgia, & the Falklands
Gulf of California: A Remarkable Journey
Department Responsibilities
Supervisor: ISOPET Silicate Dissolution & Mass Spectrometry Preparation Lab
Supervisor: Rock Cutting and Pulverizing Lab
Geological Sciences Advisory Board Liaison
Stowell, H.H., Taylor, D.L., Tinkham, D.K., Goldberg, S.A., Ouderkirk, K.A., 2001. Contact metamorphic P-T-t Paths from Sm-Nd Garnet Ages, Phase Equilibria Modeling, and Thermobarometry: Garnet Ledge, Southeastern Alaska. Journal of Metamorphic Geology, 19, p. 645-660.
Tinkham, D.K., Zuluaga, C.A., Stowell, H.H., 2001, Metapelite phase equilibria modeling in MnNCKFMASH: The effect of variable Al2O3 and MgO/(MgO+FeO) on mineral stability. Geological Materials Research, 3, 1, p. 1-42.
Stowell, H.H., Tinkham, D.K., 2003. Integration of Phase Equilibria Modeling and Garnet Sm-Nd Chronology for Construction of P-T-t Paths: Examples from the Cordilleran Coast Plutonic Complex, USA. in Vance, D. Muller, W., & Villa, I., eds. Geochronology: linking the isotopic record with petrology and textures. Geological Society Special Publication 220, p. 119-145.
Miller, R.B., Matzel, J.P., Paterson, S.R., Stowell, H.H., 2003. Cretaceous to Paleocene Cascades Arc: Structure, Metamorphism, and Timescales of Magmatism, Burial, and Exhumation of a Crustal Section. in Swanson, T. W., ed., Western Cordillera and Adjacent Areas, Geological Society of America Field Guide 4, p. 107-135.
Stowell, H.H. and Stein, E., 2005. The significance of plagioclase-dominant coronas on garnet, Wenatchee block, North Cascades, Washington, U.S.A. Canadian Mineralogist, 43, 367-385.
Zuluaga, C.A., Stowell, H.H., Tinkham, D.K., 2005. The effect of zoned garnet on metapelite pseudosection topology and calculated metamorphic P-T paths. American Mineralogist, 90, p. 1619-1628.
Stowell, H.H., Bulman, G.R., Zuluaga, C.A., Tinkham, D.K, Miller, R.B., 2007.Mid-Crustal Late Cretaceous Metamorphism in the Nason Terrane, Cascades Crystalline Core, Washington, USA: Implications for Tectonic Models, in Hatcher, R.D., Jr., Carlson, M.P., McBride, J.H., & Martínez Catalán, J.R., eds., 4–D Framework of Continental Crust, Geological Society of America Memoir 200, p. 211-231.
Zuluaga, C.A., Stowell, H.H., 2008. Multidisciplinary approach to study migmatites: origin and tectonic history of the Nason Ridge Migmatitic Gneiss, Wenatchee Block, Cascades Crystalline Core, WA, USA, Earth Sciences Research Journal, 12, p. 235-265.
Stowell, H.H., Tulloch, A., Zuluaga, C.A., and Koenig, A., 2010, Timing and duration of garnet granulite metamorphism in magmatic arc crust, Fiordland, New Zealand: Chemical Geology, v. 273, p. 91-110.
Stowell, H.H., Bulman, G.R., Tinkham, D.K, Zuluaga, C.A., 2011. Garnet growth during crustal thickening in the Cascades Crystalline Core, Washington, U.S.A. Journal of Metamorphic Geology, 29, p. 627-647.
Stowell, H.H., Zuluaga, Boyle, A., C.A., Bulman, G.R., 2011. Garnet sector and oscillatory zoning linked with changes in crystal morphology during rapid growth, North Cascades, Washington. American Mineralogist, 96, p. 1354-1362.