Sue Cashman

Office: Founders Hall 16
Phone: (707) 826-3114
Email: smc1@humboldt.edu
Personal Web Site: this is it

structural geology, tectonics

Honorary Doctorate of Science,

Middlebury College, 2008

Ph.D., Geology, Univ. of Washington, 1977
M.S., Geology, Univ. of Washington, 1974
B.A., Geology, Middlebury College, 1972

Professional Background

Chair, Humboldt State University Department of Geology, 2003-2005

Associate Editor, Geological Society of America Bulletin 1996-2001

Joined HSU 1977

Research Interests

My interests range from convergent margin tectonics to microscopic scale deformation in active fault zones. I am currently working on two main research projects. The first is a study of structures, particularly microstructures, formed by active faulting in near-surface sediments (the photo above shows one study site - the 1906 earthquake rupture of the San Andreas Fault at Alder Creek, CA). The second is the geologic evolution of the Klamath Mountains province of northern California and southern Oregon.

Theses Supervised

Undergraduate:

George, Orion, 2006, Investigation of cover sediments northwest of Hoopa, Klamath Mountains, California, 20p.

Deis, Andrew, 2005, Porosity change related to deformation band formation in the McKinleyville Fault Zone, Humboldt County, California, 36p.

Crawford, Ryan, 2004, Petrology and Microstructures of Ultramafic Rocks near Weaverville, California, 38p.

Swanson, Karl, 2003, Geomorphic and Features Adjacent to the San Andreas Fault at Bitterwater Valley, CA, 38 p.

McGowan, Mark, 2001, Petrology and Geochemistry of Dacite Dikes, Eastern Klamath Mountains, California, 24 p.

Soule, Nathan, 2000, Fracturing Behavior of the McKinleyville Fault in Marine Terrace Sands in Humboldt County, California, 26 p.

Hughes, Colin R., 2000, Uplift History of Craggy Peak Pluton, and Implications on the Nature of the La Grange Fault, Klamath Mountains, California, 30 p.

Goldstein, Harland L., 1997, A Continuation of the La Grange Fault, Eastern Klamath Mountains, California, 22 p.

Townsend, Kellie, 1995, Petrology of Unusual Dacite Dikes, La Grange Fault, Eastern Klamath Mountains, California, 29 p.

Vadurro, Giovanni A., 1993, Strain Analysis of the Genoa Fault, Sierra Nevadan Frontal Fault System, NW Nevada and NE California, 35 p.

LeRoy, Thomas H., 1993, General Reconnaissance of the Northeast Side of Hyampom Valley: Evidence for a Late Cenozoic Structural Basin, Southern Klamath Mountains, California, 27 p.

Oswald, John, 1992, The Devil's Elbow Ophiolite Remnant: Comparison with the Josephine Ophiolite and Evidence for Post-Nevadan Faulting

Dern, Gregory, 1991, Composition of the La Grange Fault Mylonite, Eastern Klamath Mountains, California

DeJohn, Arthur, 1989, A Study of Fault Gouge from the Fickle Hill Fault, Humboldt County, California

Barrie, Donald, 1985, The Use of Radiolaria as Strain Indicators in a Block of Deformed Franciscan Chert

Draper, David, 1985, Strain Recorded in Radiolarian Cherts of the Franciscan Subduction Complex at Larabee Buttes, Northwest California: A Numerical Approach

Brady, Pat, 1984, Deformational History and Inferred Stress Orientations of a Unit of Plio-Pleistocene Sediments near Orick, Northwestern California

Pickens, William E., 1983, Small Scale Structures in a Portion of the Galice Formation, Klamath River Area, Northwestern California

Holt, Don Allen, 1982, Geology of the Klamath River Valley between Clearwater Gulch and Slate Creek, Northeastern Humboldt County, California

Pennington, Daryl, 1981, Particle Size Distribution and retreat Rate of the Upper Regolith Slopes of Boars Tusk, Wyoming

Graduate:

Crawford, Ryan, 2007, Earthquake history, microstructure, and fault frictional properties of near-surface sediments on the northern San Andreas Fault at Alder Creek, California, 67p.

Elder, Don, 1991, Tectonic Control of Lode Gold Deposits, Quartz Hill, Klamath Mountains, California, 106p.

Selected research grants:

2006: National Science Foundation Collaborative Research Grant: "Mechanics of Earthquake Fault Zones: Particle Dynamics Simulations and Laboratory Experiments" (co-principal investigator: Chris Marone, Pennsylvania State University)

2005: U.S. Geological Survey EDMAP Grant: "Geologic mapping of one 7.5' quadrangle for the purpose of determining structural history of the Eastern Klamath Mountains" (co-investigator: Emily Fudge)

2004: National Science Foundation Research Grant; "Microstructural analysis of late Holocene sediments deformed by the San Andreas Fault at Point Arena, CA."

2002: National Science Foundation Research Grant: "Comparison of Microscale Fault Fabrics Formed in Creeping and Stick-Slip Faults".

1998: National Science Foundation Research Grant: "Feasibility study for automated scanning of particle size distributions in cataclastic rocks" (co-Principal Investigator: K.V. Cashman).

1991: National Science Foundation Research Grant "Changes in forearc strain partitioning with increasing obliquity of convergence, Hikurangi margin, New Zealand" (co-Principal Investigator: H. M. Kelsey).

1987: National Science Foundation Research Grant "Late Neogene Faulting and TectonicEvolution: A Study of Forearc Plate Margin Settings in New Zealand and California" (co-Principal Investigator: H. M. Kelsey).

1985: National Science Foundation Research Grant "Deformational History and Geochronometry, Western Klamath Mountains, California".

Selected Publications

Cashman, S.M., Baldwin, J.N., Cashman, K.V., Swanson, K., and Crawford, R., 2007, Microstructures developed by coseismic and aseismic faulting in near-surface sediments, San Andreas Fault: Geology, v.35, p.611-614; doi: 101130/G23545A.1

Cashman, S.M., and Cashman, K.V., 2006, Cataclastic textures in La Grange fault rocks, Klamath Mountains, California: in Snoke, A.W., and Barnes, C.G., eds., Geological studies in the Klamath Mountains province, California and Oregon: A volume in honor of Wiliam P. Irwin: Geological Society of America Special Paper 410, p. 433-450, doii: 10.1130/2006.2410(21).

Schermer, E.R., R. Van Dissen, K.R. Berryman, H.M. Kelsey, and S.M. Cashman, 2004, Active faults, paleoseismology and historical fault rupture in the northern Wairarapa, North Island, New Zealand: New Zealand Journal of Geology and Geophysics, v.47,p.101-122.

Cashman, S.M. and Elder, D.R., 2002, Post-Nevadan detachment faulting in the Klamath Mountains, California: Geological Society of America Bulletin, v. 114, no. 12, p. 1520-1534.

Baldwin, J.N., A.D. Barron, K.I. Kelson, J.B. Harris, and S.M. Cashman, 2002, Preliminary paleoseismic and geophysical investigation of the North Farrenburg Lineament: Primary tectonic deformation associated with the New Madrid North Fault?: Seismological Research Letters, v. 73, no. 3, p. 393-413.

Cashman, S.M. and Cashman, K.V., 2000, Cataclasis and deformation band formation in unconsolidated marine terrace sand, Humboldt County, California: Geology, v. 28, no.2, p.111-114.

Kelsey, H.M., A.G. Hull, S.M. Cashman, K.R. Berryman, P.H. Cashman, J.T. Trexler, and J.G. Beggs, 1998, Paleoseismology of an active reverse fault in a forearc setting: The Poukawa fault zone, Hikurangi forearc, New Zealand: Geological Society of America Bulletin, v. 110, no. 9, p. 1123-1148.

Kelsey, H.M., S.M. Cashman, S. Beanland, and K.R. Berryman, 1995, Structural evolution at the inboard margin of the acccretionary wedge, Hikurangi forearc, New Zealand: Tectonics, v. 14, no.1, p.1-18.

Cashman, S. M., Kelsey, H. K., and Harden, D. R., 1995, Geology of the Redwood Creek basin, Northwestern California: U.S. Geological Survey Professional Paper 1454, Nolan, M., Kelsey, H., and Marron, D., eds., p. B1-B13.

Kelsey, H.M., C.F. Erdman, and S.M. Cashman, 1993, Geology of southern Hawkes Bay from the Maraetotara Plateau and Waipawa westward to the Wakarara Range and the Ohara Depression: Institute of Geological and Nuclear Sciences Science Report 93/2, 17p., Institute of Geological and Nuclear Sciences Limited, Lower Hutt, New Zealand.

Elder, D.R. and Cashman, S.M., 1992, Tectonic control and fluid evolution in the Quartz Hill, California, lode gold deposits: Economic Geology, v. 87, p. 1795-1812.

Cashman, S. M., Kelsey, H. M., Erdman, C., Cutten, H. N. C., and Berryman, K. R., 1992, A Structural Transect and Analysis of Strain Partitioning across the Forearc of the Hikurangi Subduction Zone, Southern Hawkes Bay, North Island, New Zealand: Tectonics, v.11, no.2, p. 242-257.

Cashman, S. M. and Kelsey, H. M., 1990, Forearc Uplift and Extension, Southern Hawke's Bay, New Zealand: Mid-Pleistocene to Present: Tectonics, v. 9, no. 1, p.23-44.

Cashman, S. M., 1988, Finite strain patterns associated with Nevadan deformation in the western Klamath Mountains, California--Possible structural evidence for large post-Nevadan tectonic rotation: Geology, v. 16, p. 839-843.

Cashman, S. M., Cashman, P. H., and Longshore, J. D., 1986, Deformational History and Regional Tectonic Significance of the Redwood Creek Schist, Northwestern California: Geol. Soc. America Bull., v. 97, no. 1, p. 35-47.

Kelsey, H. M., and Cashman, S. M., l983, Wrench faulting in Northern California and its tectonic implications: Tectonics, vol. 2, no. 6, p. 565-576.

Cashman, S. M., l980, Devonian metamorphism in the northeast Klamath Mountains, California: Geol. Soc. America Bull., Part 1, v. 9l, p. 453-459.

McCulloh, T. H., Cashman, S. M., and Stewart, R. J., 1978, Diagenetic baselines for interpretive reconstructions of maximum burial depths and paleotemperatures in clastic sedimentary rocks: D. F. Oltz, Ed., Symposium in Geochemistry, Low Temperature Metamorphism of Kerogen and Clay Minerals, Soc. Econ. Paleontologists and Mineralogists Spec. Pub., p. 18-46.

Bostick, N. H., Cashman, S. M., McCullock, T. H., and Waddell, C. T., 1978, Gradients of vitrinite reflectance and present temperature in the Los Angeles and Ventura Basins, California: D. F. Oltz, Ed., Symposium in Geochemistry, Low Temperature Metamorphism of Kerogen and Clay Minerals, Soc. Econ. Paleontologists and Mineralogists Spec. Pub., p. 65-96.

Cashman, S. M., and Whetten, J. T., 1976, Low-temperature serpentinization of peridotite fanglomerate on the west margin of the Chiwaukum Graben, Washington: Geol. Soc. America Bull., vol. 87, p. 1773-1776.