Dimitrova, L. L. and Holt, W. E. and Haines, A. J. and Schultz, R. A. (2006) Toward understanding the history and mechanisms of Martian faulting: the contribution of gravitational potential energy. Geophysical Research Letters, 33 (8). L08202, doi:10.1029/2005GL025307. DOI https://doi.org/10.1029/2005GL025307
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Abstract
Current stress solutions for Mars match the long wavelength signal of present day topography and gravity but fail to match many surface faults, including the normal faults in northern Claritas Fossae north to Tantalus and Alba Fossae. A deviatoric stress field associated with horizontal gradients of gravitational potential energy (GPE) provides an excellent fit, as measured by objective functions, to many of the normal faults in the western Martian hemisphere as well as wrinkle ridges circumferential to Tharsis; ~70% of the faults have a misfit ≤ 0.1. The fit of faults to the GPE-derived stress field reflects the thermal state of the planet at the times of faulting, and suggests that at such times elastic thicknesses and membrane stresses were small, and topography was supported by buoyancy forces.
Item Type: | Article |
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Additional Information: | L08202 |
Uncontrolled Keywords: | 2006 AREP 2006 P IA51 |
Subjects: | 02 - Geodynamics, Geophysics and Tectonics |
Divisions: | 02 - Geodynamics, Geophysics and Tectonics |
Journal or Publication Title: | Geophysical Research Letters |
Volume: | 33 |
Page Range: | L08202, doi:10.1029/2005GL025307 |
Identification Number: | https://doi.org/10.1029/2005GL025307 |
Depositing User: | Sarah Humbert |
Date Deposited: | 16 Feb 2009 13:02 |
Last Modified: | 23 Jul 2013 10:06 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/247 |
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