Physics
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.1880m&link_type=abstract
Journal of Geophysical Research, vol. 87, Mar. 10, 1982, p.1880-1890.
Physics
23
Callisto, Planetary Craters, Ring Structures, Satellite Surfaces, Structural Basins, Failure Modes, Lithosphere, Shell Theory, Spherical Shells, Jupiter, Satellites, Callisto, Valhalla Basin, Models, Multi-Ring Basins, Origin, Lithosphere, Fragmentation, Collapse, Patterns, Faults, Stress, Thickness, Structure, Mathematical Models, Maps, Photographs, Plasticity, Asthenosphere, Analysis, Data
Scientific paper
The Valhalla basin on Callisto is a multi-ringed structure that extends over much of the satellite's surface. Although its appearance differs in detail from lunar multi-ringed basins, its origin may also be attributed to lithospheric fragmentation accompanying collapse of the transient crater formed by an impact event. This paper explores the mechanics of the collapse process by treating the lithosphere as a thin elastic-Von Mises plastic sheet (plane geometry) or shell (spherical geometry). Flow of the underlying asthenosphere inward toward the crater cavity induces plastic failure of the lithosphere and produces a characteristic pattern of faults in the disrupted lithosphere. The pattern and extent of faulting is a function of a single dimensionless parameter that involves the strength and thickness of the lithosphere, the crater depth and diameter, and the surface gravity of the planet. The tectonic structures of Valhalla correspond well with the failure pattern expected for a large crater produced in a thin (circa 30 km) weak (strength less than 100 bar) lithospheric shell.
No associations
LandOfFree
A simple mechanical model of Valhalla basin, Callisto does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A simple mechanical model of Valhalla basin, Callisto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A simple mechanical model of Valhalla basin, Callisto will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1018327