Very large, gravity driven surficial slumps develop deformational characteristics remarkably similat to those generated by tectonically driven crustal extension normal faults, yet their tectonic importance is dramatically different. Uncertainty in origins of several large extensional features have historically complicated understanding of the tectonic deformation of areas such as the Basin and Range province of the western United States. This project involves a comparison of the fault zones of large crustal-extending normal faults with those of large rootless slide blocks in an attempt to develop a set of criteria to discriminate between gravity or tectonic origins. Results may provide a new tool for partitioning extension related and surficial deformation in geologically complex, highly extended terranes, and hence in assessing the magnitude of regional extension in such regions.

Agency
National Science Foundation (NSF)
Institute
Division of Earth Sciences (EAR)
Type
Standard Grant (Standard)
Application #
9902782
Program Officer
David Fountain
Project Start
Project End
Budget Start
1999-07-15
Budget End
2003-06-30
Support Year
Fiscal Year
1999
Total Cost
$192,382
Indirect Cost
Name
Columbia University
Department
Type
DUNS #
City
New York
State
NY
Country
United States
Zip Code
10027