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Scott Baldridge

Geologist


Scott Baldridge

Contact

  • 505-667-4338 - Phone
  • 505-665-3285 - FAX

Research Interests

  • Petrology and geochemistry of mafic igneous rocks
  • Volcanism and tectonics of continental rift systems
  • Crustal evolution during rifting
  • Processes of lithospheric extension
  • Geological development of Southwest

Education

  • Ph. D. and M.S., Geology, California Institute of Technology, 1968-1969, 1972-1978
  • Universität Göttingen (Germany), 1967-1968
  • A.B., Geology, Hamilton College, 1967

Honors, Awards, Memberships

  • Fulbright Scholarship, Universität Göttingen, Göttingen, West Germany, 1967-1968
  • Sigma Xi
  • Fellow, Geological Society of America
  • Member, American Geophysical Union
  • New Mexico Geological Society
  • Hamilton College, Distinguished Alumni Medal (1990)

Experience

  • 1991-Present: Adjunct Professor, Department of Geology, University of New Mexico
  • 1984-1985: Visiting Associate Professor, Department of Geology, Hebrew University, Jerusalem (6 mo.)
  • 1980-Present: Staff Member, Los Alamos National Laboratory
  • 1978-1980: Postdoctoral Fellow, Los Alamos National Laboratory
  • 1969-1972: Research Assistant, Department of Earth and Planetary Science, Massachusetts Institute of Technology

Links

Publications

Baldridge, W. S., and Simmons, G., 1971, Thermal expansion of lunar rocks, Proc. Second Lunar Sci. Conf., vol. 3, pp. 2317-2321.

Horai, K., and Baldridge, W. S., 1972, Thermal conductivity of nineteen igneous rocks, I: Application of the needle probe method to the measurement of the thermal conductivity of rock, Phys. Earth Planet. Interiors, v. 5, pp. 151-156.

Horai, K., and Baldridge, W. S., 1972, Thermal conductivity of nineteen igneous rocks, II: Estimation of the thermal conductivity of rock from the mineral and chemical compositions, Phys. earth Planet. Interiors, v. 5, pp. 157-166.

Baldridge, W. S., Miller, F., Wang, H., and Simmons, G., 1972, Thermal expansion of Apollo lunar samples and Fairfax diabase, Proc. Third Lunar Sci. Conf., v. 3, pp. 2599-2609.

Todd, T., Wang, H., Baldridge, W. S., and Simmons, G., 1972, Elastic properties of Apollo 14 and 15 rocks, Proc. Third Lunar Sci. Conf., v. 3, pp. 2577-2586.

Baldridge, W. S., McGetchin, T. R., and Frey, F. A., 1973, Magmatic evolution of Hekla, Iceland, Contr. Mineral. Petrol., v. 42, pp. 245-258.

Todd, T., Simmons, G., and Baldridge, W. S., 1973, Acoustic double refraction in low-porosity rocks, Bull. Seismol. Soc. Amer., v. 63, pp. 2007-2020.

Simmons, G., Todd, T., and Baldridge, W. S., 1975, Toward a quantitative relationship between elastic properties and cracks in low porosity rocks, Amer. Jour. Sci., v. 275, pp. 318-345.

Baldridge, W. S., 1978, Petrology of Plio-Pleistocene basaltic rocks from the central Rio Grande rift (New Mexico, USA) and their relation to rift structure. In: Petrology and Geochemistry of Continental Rifts, E.-R. Neumann and I. B. Ramberg, ets., Reidel, Dordrecht, Holland, pp. 71-78.

Baldridge, W. S., 1979, Petrology and petrogenesis of Plio-Pleistocene basaltic rocks from the central Rio Grande rift, New Mexico, and their relation to rift structure. In: Rio Grande rift: tectonics and magmatism, R. E. Riecker, ed., Am. Geophys. Union Spec. Publ., pp. 323-353.

Baldridge, W. S., 1979, Mafic and ultramafic inclusion suites from the Rio Grande rift (New Mexico) and their bearing on the composition and thermal state of the lithosphere, Jour. Volcan. Geotherm. Res., v. 6, pp. 319-351.

Baldridge, W. S., Beaty, D. W., Hill, S. M. R., and Albee, A. L., 1979, The petrology of the Apollo 12 pigeonite basalt suite, Proc. Lunar Sci. Conf., v. 10, pp. 141-179.

Beaty, D. W., Hill, S. M. R., Albee, A. L., and Baldridge, W. S., 1979, Apollo 12 feldspathic basalts 12031, 12038, and 12072; petrology, comparison and interpretations, Proc. Lunar Sci. Conf., v. 10, pp. 115-139.

Baldridge, W. S., Damon, P. E., Shafiqullah, M., and Bridwell, R. J., 1980, Evolution of the central Rio Grande rift, New Mexico: New potassium-argon ages, Earth Planet. Sci. Lett., v. 51, pp. 309-321.

Baldridge, W. S., Carmichael, I. S. E., and Albee, A. L., 1981, Crystallization paths of leucite-bearing lavas: examples from Italy, Contr. Mineral. Petrol. v. 76, pp. 321-335.

Kautz, P. F., Ingersoll, R. V., Baldridge, W. S., Damon, P. E., and Shafiqullah, M., 1981, Geology of the Espinaso Formation (Oligocene), north-central New Mexico: Summary, Geol. Soc. Amer. Bull., v. 92, Part I, pp. 980-983.

Kautz, P. F., Ingersoll, R. V., Baldridge, W. S., Damon, P. E., and Shafiqullah, M., 1981, Geology of the Espinaso Formation (Oligocene), north central New Mexico, Geol. Soc. Amer. Bull., vol. 92, Part II, pp. 2318-2400.

Baldridge, W. S., Perry, F. V., and Gladney, E. S., 1982, Petrology and geochemistry of the Cat Hills volcanic field, central Rio Grande rift, New Mexico, Geol. Soc. Amer. Bull., v. 93, pp. 635-643.

Baldridge, W. S. Bartov, Y., and Kron, A., 1983, Geologic map of the Rio Grande rift and southeastern Colorado Plateau, New Mexico and Arizona (scale 1:500,000), American Geophysical Union.

Baldridge, W. S., 1984, The geological writings of Goethe, American Scientist, v. 72, 163-167.

Baldridge, W. S., Olsen, K. H., and Callender, J. F., 1984, Rio Grande rift: Problems and perspectives, New Mex. Geol. Soc. Guidebook 35, 1-12.

Ekas, L. M., Ingersoll, R. V., Baldridge, W. S., and Shafiqullah, M., 1984, The Chama-El Rito Member of the Tesuque Formation, Espan~ola basin, New Mexico, New Mex. Geol. Soc. Guidebook 35, 137-143.

Baldridge, W. S., Dickerson, P. W., Riecker, R. E., and Zidek, J. (eds.), 1984, Rio Grande rift: Northern New Mexico, New Mex. Geol. Soc. Guidebook 35, 379 p.

Perry, F. V, Baldridge, W. S., and DePaolo, D. J., 1987, Role of asthenosphere and lithosphere in the genesis of late Cenozoic basaltic rocks from the Rio Grande rift and adjacent regions of the southwestern United States, J. Geophys. Res., v. 92, 9193-9213.

Baldridge, W. S., Perry, F. V., and Shafiqullah, M., 1987, Late Cenozoic volcanism of the southeastern Colorado Plateau: I. Volcanic geology of the Lucero area, New Mexico, Geol. Soc. Amer. Bull., v. 99, 463-470.

Olsen, K. H., Baldridge, W. S., and Callender, J. F., 1987, Rio Grande rift: An overview, Tectonophysics, v. 143, 119-139. Chinese transl. in Global Geoscience Transects, L.-P. Cui and Q.-B. Wu, eds., Dept. Sci. and Technol. and Inst. of Geol. Inf., Min. Geol. Mineral Res., China, 1991.

Loeffler, B. M., Vaniman, D. T., Baldridge, W. S., and Shafiqullah, M., 1988, Neogene rhyolites of the northern Jemez volcanic field, New Mexico, J. Geophys. Res., v. 93, pp. 6157-6167.

Perry, F. V., Baldridge, W. S., and DePaolo, D. J., 1988, Lithospheric thinning beneath the Rio Grande rift, southwestern United States, Nature, v. 332, pp. 432-434.

Baldridge, W. S., and Olsen, K. H., 1989, The Rio Grande rift, American Scientist, v. 77, p. 240-247.

Goff, F., Gardner, J. N., Baldridge, W. S., Hulen, J. B., Nielson, D. L., Vaniman, D., Heiken, G., Dungan, M. A., and Broxton, D., 1989, Excursion 17B: Volcanic and hydrothermal evolution of Valles caldera and Jemez volcanic field, in, Chapin, C.E., and Zidek, J., eds., Field excursions to volcanic terranes in the western United States, Vol. I: Southern Rocky Mountain region, N. Mex. Bur. Mines Min. Res., Mem. 46, p. 381-434.

Baldridge, W. S., Perry, F. V., Vaniman, D. T., Nealey, L. D., Leavy, B. D., Laughlin, A. W., Kyle, P., Bartov, Y., Steinitz, G., and Gladney, E. S., 1989, Magmatism associated with lithospheric extension: Middle to late Cenozoic magmatism of the southeastern Colorado Plateau and central Rio Grande rift, New Mexico and Arizona, in, Chapin, C.E., and Zidek, J., eds., Field excursions to volcanic terranes in the western United States, Vol. I: Southern Rocky Mountain region, N. Mex. Bur. Mines Min. Res., Mem. 46, p. 187-202.

Baldridge, W. S., Perry, F. V., Nealey, L. D., Laughlin, A. W., and Wohletz, K. H., 1989, Field Guide to Excursion 8A: Oligocene to Holocene magmatism and extensional tectonics, central Rio Grande rift and southeastern Colorado Plateau, New Mexico and Arizona, in, Chapin, C.E., and Zidek, J., eds., Field excursions to volcanic terranes in the western United States, Vol. I: Southern Rocky Mountain region, N. Mex. Bur. Mines Min. Res., Mem. 46, p. 202-230.

Heiken, G., Goff, F., Gardner, J. N., Baldridge, W. S., Hulen, J. B., Nielson, D. L., and Vaniman, D., 1990, The Valles/Toledo caldera complex, Jemez volcanic field, New Mexico, Annual Review of Earth and Planetary Sciences, v. 18, p. 27-53.

Ingersoll, R. V., Cavazza, W., Baldridge, W. S., and Shafiqullah, M., 1990, Cenozoic sedimentation and paleotectonics of north-central New Mexico: Implications for initiation and evolution of the Rio Grande rift, Geol. Soc. Am. Bull., v. 102, 1280-1296.

Baldridge, W. S., 1990, Volcano tectonics of the western USA (with C. A. Wood), pp. 146-154; Taos, New Mexico (with P. W. Lipman), pp. 290-292; Ocate, New Mexico, pp. 293-294; and Lucero, New Mexico, 305-306, in Wood, C. A., and Kienle, J. (eds.), Volcanoes of North America: United States and Canada, Cambridge Univ. Press.

Perry, F. V., Baldridge, W. S., DePaolo, D. J., and Shafiqullah, M., 1990, Evolution of a magmatic system in continental extension: The Mt. Taylor volcanic field, New Mexico, Journal of Geophysical Research, 95, 19,327-19,348.

Jiracek, G. R., Baldridge, W. S., and Hix, L. J., 1991, SAGE--A unique geophysical experience, The Leading Edge, 10, 45-49.

Biehler, S., , Ferguson, J., Baldridge, W. S., Jiracek, G. R., Aldern J. L., Martinez, M., Fernandez, R., Romo, J., Gilpin, B., Braile, L. W., Hersey, D. R., Luyendyk, B. P., and Aiken, C. L., 1991, A geophysical model of the Espaola basin, Rio Grande rift, New Mexico, Geophysics, 56, 340-353.

Baldridge, W. S., Eyal, Y., Bartov, Y., Steinitz, G., and Eyal, M., 1991, Miocene magmatism of Sinai related to the opening of the Red Sea. Tectonophysics, v. 197, 181-201.

Baldridge, W. S., Perry, F. V., Vaniman, D. T., Nealey, L. D., Leavy, B. D., Laughlin, A. W., Kyle, P., Bartov, Y., Steinitz, G., and Gladney, E. S., 1991, Middle to late Cenozoic magmatism of the southeastern Colorado Plateau and central Rio Grande rift (New Mexico and Arizona, USA): a model for continental rifting. Tectonophysics, 197, 327-354.

Keller, G. R., Khan, M. A., Morgan, P., Wendlandt, R. F., Baldridge, W. S., Olsen, K. H., Prodehl, C., and Braile, L. W., 1991, A comparative study of the Rio Grande and Kenya rifts. Tectonophysics, 197, 355-371.

Hickmott, D. D., and Baldridge, W. S., 1991, Trace element and S isotopic microanalysis of coal--a combined PIXE and SIMS approach, Proc. Eighth Annual International Pittsburgh Coal Conf., 148-152.

Wendlandt, R. F., Baldridge, W. S., and Neumann, E.-R., 1991, Modification of lower crust by continental rift magmatism, Geophys. Res. Lett., 18, 1759-1762.

Baldridge, W. S., and Jiracek, G. R., 1992, SAGE program explores the Rio Grande rift, EOS, Trans. Am. Geophys. U., 73, pp. 145, 148-149.

Baldridge, W. S., 1992, Caldera, McGraw-Hill Encyclopedia of Science and Technology, 7th Edition, 157-161.

Neumann, E.-R., Olsen, K. H., Baldridge, W. S., and Sundvoll, B., 1992, The Olso rift: A review, Tectonophysics, v. 208, pp. 1-18.

DePaolo, D. J., Perry, F. V., and Baldridge, W. S., 1992, Crustal versus mantle sources of granitic magmas: a two-parameter model based on Nd isotopic studies, Trans. Royal Society of Edinburgh, v. 83, p. 439-446.

Perry, F. V., DePaolo, D. J., and Baldridge, W. S., 1993, Neodymium isotopic evidence for decreasing crustal contributions to large-volume Cenozoic rhyolites of the western United States: implications for magmatic transitions and the thermal evolution of the Cordilleran crust, Geol. Soc. Am. Bull., v. 105, pp. 872-882.

Wendlandt, E., DePaolo, D. J., and Baldridge, W. S., 1993, Nd and Sr isotope chronostratigraphy of Colorado Plateau lithosphere: implications for magmatic and tectonic underplating of the continental crust, Earth Planet. Sci. Lett., v. 116, 23-43.

Lewis, C. J., and Baldridge, W. S., 1994, Crustal extension in the Rio Grande rift, New Mexico: half-grabens, accommodation zones, and shoulder uplifts in the Ladron Peak-Sierra Lucera area, in Keller, G. R., and Cather, S. M. (eds.), Basins of the Rio Grande rift: Structure, stratigraphy, and tectonic setting, Geol. Soc. Am. Spec Publ. 291, 135-155.

Baldridge, W. S., Ferguson, J. F., Braile, L. W., Wang, B., Eckhardt, K., Evans, D., Schultz, C., Gilpin, B., Jiracek, G. R., and Biehler, S., 1994, The western margin of the Rio Grande rift in northern New Mexico: An aborted boundary?, Geol. Soc. Am. Bull., 106, 1538-1551.

Sims, K. W. W., DePaolo, D. J., Murrell, M. T., Baldridge, W. S., Goldstein, S. J., and Clague, D. A., 1995, Mechanisms of magma generation beneath Hawaii and mid-ocean ridges: U-Th and Sm-Nd isotopic evidence, Science, 267, 508-512.

Lutter, W. J., Thurber, C. H., Roberts, P. M., Steck, L. K., Fehler, M. C., Stafford, D., Baldridge, W. S., and Zeichert, T. A., 1995, Teleseismic P-wave image of crust and upper mantle structure beneath the Valles caldera, New Mexico: Initial results from the 1993 JTEX passive array, Geophys. Res. Lett., 22, 505-508.

Hickmott, D. D., Baldridge, W. S., and Raymond, R., 1995, Application of PIXE microanalysis of macerals and sulfides from the Lower Kittanning coal of western Pennsylvania, Economic Geology, v. 90, 246-254.

Ferguson, J. F., Baldridge, W. S., Braile, L. W., Biehler, S., Gilpin, B., and Jiracek, G. H., 1995, Structure of the Española basin, Rio Grande rift, New Mexico, from SAGE seismic and gravity data, New Mex. Geol. Soc. Guidebook 46, 105-110.

Wendlandt, R. F., Altherr, R., Neumann, E.-R., and Baldridge, W. S., 1995, Petrology, geochemistry, isotopes. In: K. H. Olsen (ed.), Continental Rifts: Evolution, Structure, and Tectonics, Developments in Geotectonics Volume 25, Elsevier, Amsterdam, p. 47-60.

Baldridge, W. S., Keller, G. R., Haak, V., Wendlandt, E., Jiracek, G. R., and Olsen, K. H., 1995, Rio Grande rift. In: K. H. Olsen (ed.), Continental Rifts: Evolution, Structure, and Tectonics, Developments in Geotectonics Volume 25, Elsevier, Amsterdam, p. 233-276, .

Neumann, E.-R., Olsen, K. H., and Baldridge, W. S., 1995, The Oslo rift. In: K. H. Olsen (ed.), Continental Rifts: Evolution, Structure, and Tectonics, Developments in Geotectonics Volume 25, Elsevier, Amsterdam, 345-374.

Keller, G. R., and Baldridge, W. S., 1995, The Southern Oklahoma Aulacogen. In: K. H. Olsen (ed.), Continental Rifts: Evolution, Structure, and Tectonics, Developments in Geotectonics Volume 25, Elsevier, Amsterdam,427-436.

Baldridge, W. S., Keller, G. R., and Braile, L. W., 1995, Continental rifting: A final perspective. In: K. H. Olsen (ed.), Continental Rifts: Evolution, Structure, and Tectonics, Developments in Geotectonics Volume 25, Elsevier, Amsterdam, 453-460.

Wendlandt, E., DePaolo, D. J., and Baldridge, W. S., 1996, Thermal history of Colorado Plateau lower crust from Sm-Nd mineral geochronology of xenoliths, Geol. Soc. Am. Bull., in press.

Slack, P. D., Davis, P. D., Dahlheim, H.-A., Glahn, A., Achauer, U., Baldridge, W. S., Olsen, K. H., Spence, W. and Green, V., 1996, The upper mantle structure of the Rio Grande rift from teleseismic P and S wave travel time delays and attenuation, J. Geophys. Res., in press.

Cather, S. M., and Baldridge, W. S., 1996, Geology of Table Mountain quadrangle, Socorro County, New Mexico, New Mex. Bur. Mines Min. Res. map, 1:24,000, in press.

Jiracek, G. R., Kinn, C. L., Scott, C. L., Kuykendall, M. G., Baldridge, W. S., Biehler, S., Braile, L. W., Ferguson, J. F., and Gilpin, B., 1996, Tracing crustal isotherms under the western margin of the Jemez Mountains using SAGE and industry magnetotelluric data, New Mex. Geol. Soc., Guidebook 47 (in press).

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