Cosmogenic Nuclide Laboratory and Geomorphology Research Group
Erosion of North American Granites
We sampled granite inselbergs in arid southern California, semi-arid central Texas, and humid Georgia. Cosmogenic 10-Be, 26-Al and 36-Cl all indicate that these are exceptionally stable landforms typically eroding at rates of meters per million years.
Project SupportMultiple Methods of Age Determination EAR-9004252
Proposal Project Summary (not yet available)
Other Related LinksMore In-depth North American Granites Project page
People Working on this ProjectPaul Bierman
Publications Related to this Project
Nichols, K.K., Bierman, P.R., Foniri, W.R., Gillespie, A.R., Caffee, M., and Finkel, R., 2006, Dates and rates of arid region geomorphic processes: GSA Today, v. 16, p. 4-11.
Abstracts Related to this Project
Gillespie, A.R., and Bierman, P.R., 2000, Fan-moraine synchrony, Sierra Nevada, California: Geological Society of America Abstracts with Programs, v. 32, p. A-472. (download pdf)
Gillespie, A.R., Clark, D.H., and Bierman, P.R., 1996, New exposure ages support asynchronism between alpine glaciation and sea-level fluctuations, Sierra Nevada, California: Geological Society of America Abstracts with Programs, v. 27, p. A-133.
Bierman, P.R., and Gillespie, A.R., 1991, The evolution of granitic landforms -- field observations and cosmogenic insights: Geological Society of America Abstracts with Programs, v. 23, p. A89. (download pdf)
Bierman, P.R., and Gillespie, A.R., 1991, Lowering rates of granitic landforms determined by measurement of in situ produced cosmogenic nuclides: EOS, v. 72, p. 575. (download pdf)
Last modified September 30 2008 02:13 PM