HR: 1340h
AN: P53B-1241    [Abstracts]
TI: Global Geology and Stratigraphy of Europa
AU: * Doggett, T
EM: tcd@asu.edu
AF: Arizona State University, School of Earth and Space Exploration PO Box 871404, Tempe, AZ 85287-1404, United States
AU: Greeley, R
EM: greeley@asu.edu
AF: Arizona State University, School of Earth and Space Exploration PO Box 871404, Tempe, AZ 85287-1404, United States
AU: Figueredo, P
EM: phfigueredo@yahoo.com
AU: Tanaka, K
EM: ktanaka@usgs.gov
AF: U.S. Geological Survey, Astrogeology Research Program Flagstaff Field Center 2255 N. Gemini Dr., Flagstaff, AZ 86001, United States
AB: Previous geologic mapping of Europa, using hemisphere-wide low-resolution Voyager coverage, as well as local and regional higher resolution Galileo coverage, has now been synthesized and augmented as a global map and linea stratigraphy produced in ArcGIS using a photomosaic of the best Galileo and Voyager resolutions and a custom linea-stratigraphy sorting tool. A stratigraphic sequence from an older plains-building period (60 mya according the crater age estimates), through a linea-building period to a chaos-forming period is seen, with minor contribution from impact cratering. Variable photometry and resolution in the base map makes interpretations necessarily tentative, underscoring the need for future missions to conduct a global mapping at higher resolution. This work is being published as a forthcoming USGS map product, and as a chapter in the UoA Space Science Series volume on Europa.
DE: 5422 Ices
DE: 5455 Origin and evolution
DE: 5470 Surface materials and properties
DE: 5475 Tectonics (8149)
DE: 5499 General or miscellaneous
SC: Planetary Sciences [P]
MN: 2007 Fall Meeting