Dr. Peter Sak
Assistant Professor of Geology
(Structural Geologist)

Department of Geology
Kaufman Building, rm 137
Dickinson College
Carlisle, PA 17013-2896
USA

Phone: 717.245.1423
E-Mail:

Publications


Manuscripts

* Student Author

  • Sak, P.B., Fisher, D.M., Gardner, T.W., Marshall, J.S., and LaFemina, P.C., accepted, Rough crust subduction, fore arc kinematics, and Quaternary uplift rates, Costa Rican segment of the Middle American Trench: Geological Society of America Bulletin (8/25/2008).
  • Navarre, A., Sak, P.B.,, and Brantley, S.L., 2004, Processes controlling weathering rind advancement on Costa Rican basalt clasts, 11th Annual Proceedings of the Water-Rock Interaction Conference, Vol. 1  (ed. R. Wanty, and R. Seal, II), p. 853-858.  A.A. Balkema Publishers.

Abstracts

  • Sak, P.B., Miller, C.E., Daniel, C., Buss, H.L., Gaillardet, J., Brantley, S.L., 2008, Variations in elemental weathering rates as a function of clast geometry around a single basaltic andesite clast: Center for Environmental Kinetic Analysis All Hands Meeting, October 23, 2008.  State College, PA. [INVITED].

  • Sak, P.B., Miller, C.E., Daniel, C., Buss, H.L., Gaillardet, J., Brantley, S.L., 2008, Variations in elemental weathering rates as a function of clast geometry around a single basaltic andesite clast: Geological Society of America, Abstracts with Programs, v. 40.

  • Marshall, J.S., LaFromboise, E.J., Utick, J.D., Khaw, F., Morrish, S.C., Piestrzeniewicz, P., Protti, M., Gardner, T.W., Sak, P.B., Fisher, D.M., and Spotila, J.A., 2008, Coastal tectonics of the Nicoya Peninsula seismic gap, Costa Rica: Geological Society of America, Abstracts with Programs, v. 40.

  • Sak, P.B., Fisher, D., Gardner, T., Marshall, J., and LaFemina, P., 2008, Relationship among rough crust subduction, forearc kinematics, and Quaternary uplift rates, Costa Rican segment of the Middle America Trench: Geological Society of America, Abstracts with Programs, v. 40.

  • Pelt, E., Chabaux, F., Innocent, C., Navarre-Sitchler, A., Sak, P., Brantley, S., 2008, 238U-234U-230Th chronometry of weathering rinds: Rates of weathering and isotopic record of soil waters Geochim. Cosmochim. Acta 72, A734 (abstr.).
    López, A., Marshall, J.S., Chinchilla, A.L., Sak, P.B., Chiesa, S., Alvarado, G.E., Gazel, E., 2008, Stress field map of Costa Rica: The Sigma Project: Resumenes del IX Congreso Geológico de América Central, San José, Costa Rica, 2008.

  • López, A., Marshall, J.S., Chinchilla, A.L., Sak, P.B., Chiesa, S., Meschede, M., Alvarado, G.E., Calderón, M., Gazel, E., Villegas, A., and Barquero, R., 2008, The Sigma Project stress field map of Costa Rica: World Stress Map, Release 2008: Heidelberg Academy of Sciences and Humanities, and Geophysical Institute, University of Karlsruhe, Germany.

  • Hausrath, E.M., Navarre-Sitchler, A.K., Moore, J., Sak, P.B., Brantley, S.L., Golden, D.C., Sutter, B., Schröder, C., Morris, R.V., and Ming, D.W., 2008, Mars sample return: The value of depth profiles.  Ground truth from Mars: Science payoff from a sample return mission, April 21-23, 2008, Albuquerque, New Mexico.

  • Hoffman, W.N. and Sak, P.B., 2007, Preservation of Oxygen Isotope Stage 3 marine terrace deposits along the southwest coast of the Osa Peninsula, Corcovado National Park, Costa Rica: Eos Trans. AGU, v. 88(52), Fall Meet. Suppl. Abs. T51A-0302.

  • *Hoffman, W.N. and Sak, P.B., 2007, Preservation of Oxygen Isotope Stage 3 marine terrace deposits along the southwest coast of the Osa Peninsula, Corcovado National Park, Costa Rica: Science on the Hill, October 2, 2007.

  • Buss, H.L., Webb, S.M., Sak, P.B., and Brantley, S.L., 2007, Mineral weathering rates coupled to bedrock fracturing and saprolite formation: Geochim. Cosmochim. Acta 70, A138 (abstr.).

  • Hausrath, E.M., Navarre-Stitchler, A., Sak, P.B., Steefel, C.I., and Brantley, S.L., 2007, Basalt weathering rates on Earth and the duration of water on Mars: Geochim. Cosmochim. Acta 70, A387 (abstr.).

  • Pelt, E., Chabaux, F., Navarre-Sitchler, A., Sak, P., Brantley, S., 2007, Rates of weathering rind formation from 238U-234U-230Th chronometry: Application to basalt weathering Geochim. Cosmochim. Acta 70, A773 (abstr.).

  • Sak, P.B., Fisher, D.M., Gardner, T.W., Marshall, J.S., and LaFemina, P.C., 2007, Relationship among rough crust subduction, fore arc kinematics, and Quaternary uplift rates, Costa Rican segment of the Middle American Trench: NSF-MARGINS Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America. Heredia, Costa Rica June 18-22.

  • Fisher, D.M., Gardner, T.W., Morell, K.D., Sitchler, J., Marshall, J.S., Sak, P.B., and Protti, M., 2007, Evolution of the Costa Rican Forearc:  NSF-MARGINS Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America. Heredia, Costa Rica June 18-22. [Keynote Talk]

  • Hausrath, E.M., Navarre-Sitchler, A.K., Sak, P.B., Brantley, S.L., 2007, What can we learn from depth profiles on Mars? 38th Lunar and Planetary Science Conference, (Lunar and Planetary Sceince XXXVIII) LPI Contribution No. 1338, p. 2075.

  • *Jackson, M.S., *Hanley, P.M., and Sak, P.B., 2007, Strain analysis on fossils from the Susquehanna River Valley, Southern Valley and Ridge Physiographic Province: Geological Society of America Abstracts with Programs, v. 39, no. 1, p. 25.

  • Sak, P.B., Fisher, D.M., Gardner, T.W., La Femina, P., Marshall, J.S., 2006, Interseismic couplings, Quaternary uplift rates, and fore arc deformation along the Costa Rican segment of the Middle American Trench. Eos Trans. AGU, v. 87, Fall Meet. Suppl. Abs. T21D-0445.

  • Hausrath, E.M., Sak, P.B., Navarre-Sitchler, A.K., Williams, J.Z., *Cabret, E.J., Brantley, S.L., 2006, Gradients in mineralogy and element composition at the bedrock-saprolite interface record mineral reaction and transport rates.  Geological Society of America Abstracts with Programs, v. 38, n. 7, p. 159.

  • Leonard, E.M., Sak, P.B., *Biscontini, A.J., *Jemison, E.B., Miller, S.R., 2006, Late Cenozoic incision along the Arkansas River, Colorado: Preliminary data on timing, magnitudes, and rates.  Western U.S. Geodynamics Workshop, Aspen, CO, August 29th – September 2nd, 2006.  [INVITED].

  • *Jackson, M.S., *Lloyd, A.S., *Nogier, M., *Reiss, K., *Cresci, C., *Goldstein, R., and Sak, P.B., 2006, Recognition of shear zones within the westernmost Frontenac Terrane of the Central Metasedimentary Belt, Grenville Province, Ontario: Geological Society of America Abstracts with Programs v. 38, no. 2, p. 77.

  • Sak, P.B., Leonard, E.M., Miller, S.R., *Biscontini, A.J., *Jemison, E., 2005, Late Cenozoic drainage reorganization of the Arkansas River, central Colorado, and history of the Royal Gorge: Geological Society of America Abstracts with Programs, v. 37, no. 7, p. 295.

  • Sak, P.B., Hausrath, E.M., Navarre, A.K., and Brantley, S.L., 2005, The Persistence of rock-forming minerals in the soil environment: Earth System Processes 2. Geological Society of America Abstracts with Programs, v. 38.

  • Leonard, E.M., and Sak, P.B., 2005, The late Cenozoic evolution of the enigmatic upper Arkansas River, Colorado: Geological Society of America Abstracts with Programs, v. 37, no 6, p. 16 [Keynote Talk].

  • Buss, H.L., Flecher, R.C., Sak, P.B., and Brantley, S.L., 2005, Chemical weathering rates and the importance of fracturing: American Chemical Society Spring Meeting, San Diego, CA.

  • Navarre, A.K., Steefel, C.I., Sak, P.B., Brantley, S.L., 2004, The Chemical End Member of the Coupled Physical and Chemical Weathering System, Eos Trans. AGU, 85,  Fall Meet. Suppl., Abs. H43C-0380.

  • Goldstein, A., Siddoway, C., Fryxell, J., Markley, M., Hannula, K., Weil, A., Sak, P., Yule, D., Gibson, D., 2004, Integrating classroom and lab projects with fieldwork and field trips: results of a TSG working group: Geological Society of America Abstracts with Programs, v. 36, no. 5, p. 438-439.

  • Bialas, J., M. Breitzke, N. Fekete, E.R. Flueh, I., Klaucke, D. Buerk, C. Papenberg, D. Klaschen, and the SO 173-1 Working Group, 2003, A High Resolution Deep Towed Seismic Survey Across Mound Culebra, Costa Rica, Eos Trans. AGU Fall Meet. Suppl.

  • Breitzke, M., J. Bialas, D. Buerk, N. Fekete, E.R. Flueh, D. Klaeschen, I. Klaucke, C Papenberg, C. Ranero, and the SO 173-1 Working Group, 2003, A High-Resolution Deep-Towed Seismic Survey in the Mound Region Along the Continental Slope off Nicaragua, Eos Trans. AGU Fall Meet. Suppl.

  • *Christensen, G., *Carmen, T., *Sacerdoti, R.,Leonard, E., and Sak, P., 2003, Debris flow velocities in Chalk Creek Canyon, Colorado: Geological Society of America Abstracts with Programs, v. 35.

  • *Kitchen, C.H., Noblett, J., and Sak, P.B., 2003, Petrology and Geochemcial Analysis of Volcanic Deposits in the Tenorio Volcanic Complex, Bijagua, Northwestern Costa Rica: Geological Society of America Abstracts with Programs, v. 35, no. 4, p. 17.

  • Steefel, C.I., Rye, R.M., Sak, P.B., Brantley, S.L., 2002, Interpretation of weathering profiles from the Paleo-Proterozoic and present using reactive transport modeling. Geochim. Cosmochim. Acta 66, A737 (abstr.).

  • Fisher, D.M., Sak, P.B., Gardner, T.W., 2002, Effects of subducting seafloor roughness on upper plate vertical tectonism: Osa Peninsula, Costa Rica, Eos Trans. AGU Fall Meet. Suppl.

  • Fisher, D.M., Gardner, T.W., Sak, P.B., Marshall, J., and Protti, M., 2001, Uplift patterns in the fore arc of the Middle America Trench, Costa Rica: implications for mass balance and fore-arc kinematics, Eos Trans. AGU. Fall Meet. Suppl.,

  • Sak, P.B., Fisher, D.M., Brantley, S.L., 2001, Rates of weathering rind formation on Costa Rican basalt: NSF MARGINS Central American Tectonics, Heredia Costa Rica.

  • Sak, P.B., Gardner, T.W., and Fisher, D.M., 2001, Preservation of oxygen isotope stage 3 terrace deposits along the Pacific coast, Costa Rica: Geological Society of America Abstracts with Programs, v. 33, no. 6, p. 70.

  • Sak, P.B., Brantley, S.L., and Fisher, D.M., 2001, Diffusion models for weathering rind genesis.  In Eleventh Annual V.M. Goldschmidt Conference, Abstract #3397.  LPI Contribution No. 1088, Lunar and Planetary Institute, Houston (CD-ROM).

  • Gardner, T.W., Fisher, D.M., Marshall, J.S., and Sak, P.B., 2000, Fore arc deformation, segmentation and drainage evolution in response to seamount subduction along an eroding margin, Pacific coast, Costa Rica , Eos Trans. AGU, 81(48), Fall Meet. Suppl., F1206 [Invited Paper].

  • Sak, P.B., Brantley, S.L., Fisher, D.M., and Gardner, T.W., 2000, A diffusion model for weathering rind genesis in a tropical setting.  In Tenth Annual Goldschmidt Conference.  Cambridge Publications Ltd.

  • Fisher, D.M., Sak, P.B., Gardner, T.W., and *Arthur, J., 2000, Out-of-sequence thrusting in the Costa Rican fore arc of the Middle America Trench, Eos Trans. AGU, 81(48), Fall Meet. Suppl., F1178.

  • Sak, P.B., Brantley, S.L., Fisher, D.M., *Wise, J., and Gardner, T.W., 1999, Weathering rinds as a calibrated dating technique in a tectonically active tropical setting, Costa Rica: Geological Society of America Abstracts with Programs, v. 31, p. A 474.

  • Gardner, T.W., Marshall, J., Merritts, D., *Bee, B., *Burgette, R., *Burton, E., *Cooke, J., *Kehrwald, N., Protti, M., Sak, P., and Fisher, D., 1999, Holocene, inner forearc deformation in response to seamount subduction, Peninsula de Nicoya, Pacific Coast, Costa Rica: Geological Society of America Abstracts with Programs, v. 31, p. A 48.

  • Fisher, D.M., Marshall, J.S., Sak, P.B., Gardner, T.W., and Protti, J., 1998. Faulting and uplift along the Costa Rican Pacific coast: ODP Leg 170 post-cruise meeting, Tambor, Costa Rica [Invited Paper].

  • Sak, P.B., Fisher, D.M., Gardner, T.W., and Protti, M., 1998. Neotectonic evolution of the Esterillos Block, Pacific coast, Costa Rica: Geological Society of America Abstracts with Programs, v. 30, p. A 124.

  • Sak, P.B., Fisher, D.M, Gardner, T.W., Protti, M., and Marshall, J.S., 1997. Recent landscape evolution and fault kinematics related to basement-cored blocks, Pacific coast, Costa Rica: Geological Society of America Abstracts with Programs, v. 29, n.7, p. A 442.

  • Pogue, K.R., Sak, P.B., and Khattak, W.U., 1995. A Geologic Reconnaissance of the Indus Syntaxis, northern Pakistan, in

  • Spencer, D.A., Burg, J.P., and Spencer-Cervato, C., eds., 10th Himalayan-Karakorum-Tibet Workshop Abstract Volume: Mitteilungen aus dem Geologischen Institut der Eidgenossischen Technischen Hochschule und der Universitat Zurich, Neue Folge, n, 298.

  • Sak, P. B., and Pogue, K. R., 1995. Micro-structural and petrographic analysis of mylonitic rocks from the Indus Syntaxis Region, Northern Pakistan: Geological Society of America Abstracts with Programs, v. 28, p. A 391.

  • Sak, P., and Humm, A., 1994, Deformational history of the Silence Lake lineament, Quetico-Wawa structural junction, Quetico Provincial Park, Ontario, Canada, in Wilson, M.A. ed. 7th Annual Keck Research Symposium in Geology Abstracts Volume, p. 210-214.