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Record Details

Record 26 of 2098
Horizontal stresses induced by vertical processes in planetary lithospheres
Author and Affiliation:
Banerdt, W. B.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Abstract: Understanding the state of stress in the elastic lithosphere is of fundamental importance for planetary geophysics, as it is the link between the observed geologic structures on the surface and the processes which form and modify these structures. As such, it can provide valuable constraints for the difficult problem of determining interior structure and processes. On the Earth, most large scale, organized deformation can be related to lateral tectonics associated with plate dynamics; however, the tectonics on many extraterrestrial bodies (such as the Moon, Mars, and most of the outer-planet satellites) appears to be primarily vertical in nature, and the horizontal stresses induced by vertical motions and loads are expected to dominate the deformation of their lithospheres. The largest stress contributions from vertical loading come from the flexure of the lithosphere, which induces both bending moments and membrane stresses. We are concerned here only with nonflexural changes in the state of stress induced by processes such as sedimentary and volcanic deposition, erosional denudation, and changes in the thermal gradient that induce uplift or subsidence. This analysis is important both for evaluating stresses for specific regions in which the vertical stress history can be estimated, as well as for applying the proper loading conditions to global stress models. It is also of interest for providing a reference state of stress for interpreting stress measurements in the crust of the Earth.
Publication Date: Jan 01, 1993
Document ID:
19940007570
(Acquired Dec 28, 1995)
Accession Number: 94N12042
Subject Category: GEOPHYSICS
Coverage: Abstract Only
Document Type: Conference Paper
Publication Information: Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F; p 57-58
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: EROSION; GEOPHYSICS; LITHOSPHERE; PLANETARY GEOLOGY; PLATES (TECTONICS); STRESS ANALYSIS; STRUCTURAL PROPERTIES (GEOLOGY); TECTONICS; VOLCANOES; BENDING MOMENTS; DEFORMATION; ESTIMATING; STRESS MEASUREMENT; TEMPERATURE GRADIENTS
Imprint And Other Notes: In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 57-58 (SEE N94-12015 01-91)
Availability Source: Other Sources
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