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Galileo views of the geology of Callisto

Greeley, R. and Klemaszewski, J.E. and Wagner, R. (2000) Galileo views of the geology of Callisto. Planetary and Space Science, 48, pp. 829-853.

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Callisto was imaged by the Galileo spacecraft on 10 orbits, half of which involved close flybys, producing images with resolution as high as 15 m/pixel. The Calhalla, Asgard, and Alinda multi-ring structures were imaged, along with two features which might also be large impacts, Utgard and Heimdall (both provisionally named). The high albedo interior zones of these structures are relatively rugged and include small knobs. The interior zone of Valhalla includes outward facing scarps, as discovered on Voyager images, while the inner zones of the other, smaller multi-ring structures include grabens and inward facing scarps. The outer ring zones consist of grabens which are sinuous and include multiple parallel faults and fractures. High albedo areas associated with the fractures had been suggested previously as resurfacing zones; they are now seen to consist if numerous, closely spaced fractures. Crater size frequency distributions for the units associated with multi-ring structures suggest that all were formed essentially contemoraneously with their respective impact events.

Item URL in elib:https://elib.dlr.de/18055/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2000,
Title:Galileo views of the geology of Callisto
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Greeley, R.Department of Geology, Arizona State University, Tempe, AZ, USAUNSPECIFIEDUNSPECIFIED
Klemaszewski, J.E.Department of Geology, Arizona State University, Tempe, AZ, USAUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 829-853
Keywords:outer planet satellites; icy moons, multi-ring impacts
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institut für Weltraumsensorik und Planetenerkundung
Deposited By: Pieth, Susanne
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 18:41

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