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The geology of EuropaThe map units and lineations of Europa are detailed, and the geologic processes, and history, and thick and thin ice models of the satellite are discussed. It is concluded that Europa lacks evidence of a horizontally stratified crust; the geology appears characterized by disruption of the crust and intrusions into an icy shell. The surface consists of plains and mottled terrain, the former being older. Numerous straight and curved lineations, streaks, stripes, and bands cross EuropA's surface on a global and surface scale. Most lineations appear related to fractures in the crust. Five fresh craters in the 10 to 30 km diameter range are visible. The dark spots, stripes, and bands that appear to have replaced sections of the crust suggest that material was transported to the surface from the subjacent silicate lithosphere. The apparent low density of craters superposed on Europa's surface suggests that the surface is about 100 million years old.
Document ID
19830035021
Document Type
Other - Collected Works
Authors
Lucchitta, B. K. (Geological Survey Flagstaff, AZ, United States)
Soderblom, L. A. (U.S. Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-13709
CONTRACT_GRANT: NASA ORDER W-08395
PROJECT: PROJECT VOYAGER
Distribution Limits
Public
Copyright
Other