David Bazard

Welcome to my Web Page. I am a professor of Earth Science at College of the Redwoods in Eureka where I have been teaching earth sciences courses since 1995.

If you are interested in the curriculum and science AA degrees at College of the Redwoods, select the earth science home tab above. This home page provides links to our science-related degrees, course descriptions, and college catalog. Feel free to email me if you have questions. Scroll to the bottom of this page to find a link to my email address

My educational background and past research activities are listed below. My current activities are almost exclusively directed toward developing classroom exercises and designing web- and field-based projects for my students. If you are interested in my web resources, browse the activities and field trips listed under the geology and geography tabs above. I have also provided links to earth science web sites in the side bar.

Click here to go to the interactive map example that is included at the bottom of this page. This is an example of the type of web resource I am currently sharing with students. I will be posting a similar activity on the geology page soon.

Education and Research 

  • Ph.D., University of Arizona, Geology and Geophysics, 1991.
    M.S., Western Washington University, Geology and Geophysics, 1987.
    B.A., Humboldt State University, Geology, 1982.

      Selected Publications:
      Bazard, D.R., Butler, R.F., Gehrels, G.E., Soja C.M., Early Devonian paleomagnetic data from the Lower Devonian Karheen Formation suggest Laurentia-Baltica connection for the Alexander terrane, Geology, v. 23, p. 707-710, 1995.

      Gehrels. G.E., Butler, R.F., Bazard, D.R., Detrital zircon geochronology of the Alexander terrane, southeastern Alaska, GSA Bulletin; v. 108; no. 6; p. 722-734, 1996.

      Bazard, D.R., Butler, R.F., Paleomagnetism of the Brushy Basin Member of the Morrison Formation: Implications for Jurassic Apparent Polar Wander, Journal of Geophysical Research, 99, 6695-6710, 1994.

      Bazard, D.R., Butler, R.F., Paleomagnetism of the Chinle and Kayenta Formations, New Mexico and Arizona, Journal of Geophysical Research, 96, 9847-9871, 1991.

      Bazard, D.R., Burmester, R.F., Beck, M.E., Jr., Granirer, J.L., and Schwarz, G., Paleomagnetism of the Methow region, north central Washington: structural application of paleomagnetic data in a complexly deformed, variably remagnetized terrane, Canadian Journal of Earth Science, v. 27, p. 330-343, 1990.

      Recent Abstracts

      Dengler, L.A., Bazard, D., Cashman, S.M., Hemphill-Haley, E., Hemphill-Haley, M., Kelsey, H., McPherson, R., and Tillinghast, S., Shaking, Ground Effects, and Human Response to the Mw 6.5 Northern California Earthquake of January10, 2010, SSA 2010 Abstracts of the Annual Meeting, Seismological Research Letters v. 81, no.2, p. 385, 2010.

      McPherson, B.C., Hemphill-Haley, M.A., Dengler, L.A., Williams, T.B., Erickson, G.J., and Bazard, D., Quantifying Strong Ground Shaking in Sparsely Instrumented Regions, SSA 2010 Abstracts of the Annual Meeting, SSA 2010 Abstracts of the Annual Meeting, Seismological Research Letters v. 81, no.2, p.386, 2010.

      Shapiro, R.S. and Bazard, D., Carbonate-cemented hardgrounds: a subtle indicator for seep activity offshore Humboldt Bay, EOS Trans, AGU, 88(52), Abstract B53C-03, 2007.


      Interactive Map Example 

      The map below shows the movement of locations relative to the stable interior of North America (SNARF reference). These data have been collected using GPS stations at the locations shown. Click on a station to obtain the amount of motion in terms of north and east. A negative reading is either south or west. Note the changes in motion across the San Andreas Fault. Click on any of the placemarks to find the annual velocity (in mm north and east) of that location.


      View PBO GPS sites in a larger map