Advanced Intermediate Beginner Home English Spanish

Does Europa have a Surface in Motion?



This is an image of Europa showing what may be plates floating on a subsurface ocean.
Click on image for full size version (92K GIF)
Image from: NASA

The surface of Europa was carefully examined for types of faulting. These provide evidence of the kind of stress (pushing and shoving) which the crust of Europa has undergone through time. By identifying the "pushing forces", scientists can figure out how the surface of Europa moves.

The surface of Europa shows many signs of icy-volcanism:

  • smooth, unmodified plains
  • puddle-like flow
  • flooded terrain (see puddle-like flow)
  • plates (example shown here)
  • strike/slip faulting (similar to the San Andreas Fault of Earth)
Examination of the surface also shows a relatively uniform cratering pattern remeniscent of that of Venus & Earth.

This style of icy-volcanism proves to be different from either that of Callisto or Ganymede. (The other major moon of Jupiter, Io has a more conventional form of volcanism.) The difference has to do with heating in the interior of Europa


Return to moons

Return to Europa surface & interior

Earth's continental drift


Credits Settings Sponsorship Membership Contact us About the site Site map Help Myths People News Arts, books and film Images and multimedia Tours Life Geology Physics Space weather Space Missions Solar system Astronomy and the Universe Shop for science stuff Games Ask a scientist Journal Comets Dwarfs Neptune Uranus Saturn Jupiter Asteroids Mars Earth Venus Mercury Sun Teacher resources Kids Space Search Home



Last modified April 28, 1997 by the Windows Team

The source of this material is Windows to the Universe, at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). © The Regents of the University of Michigan. Windows to the Universe® is a registered trademark of UCAR. All Rights Reserved. Site policies and disclaimer