Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern.

Details Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern. Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern.

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004dps....36.1611k&link_type=abstract

American Astronomical Society, DPS meeting #36, #16.11; Bulletin of the American Astronomical Society, Vol. 36, p.1100

Other

3

Scientific paper

The majority of Io's mountains are isolated, tectonic thrust blocks, and are concentrated in two broad regions ˜antipodal to each other and anticorrelated at low spherical harmonic degree to the distribution of volcanic centers (Kirchoff et al. 2003, EOS 46, F962, and submitted). Dominant horizontal directions (presumably, strikes of thrust hinges) have been determined for these mountains from Voyager and Galileo images. In a coordinate system whose axis is centered on the regions of mountain concentration, the strikes of the mountains within the regions of concentration show a preferential orientation perpendicular or subperpendicular to lines of ``longitude" (see fig.). The distribution of strikes outside the regions of concentration is consistent with being random. It is interesting to note that axially symmetric, in-plane compression of an elastic spherical cap gives meridional (colatitudinal) principal compressive stresses greater than circumferential (longitudinal) principal compressive stresses, broadly consistent with the distribution of observed fault strikes within the regions of mountain concentration. Possible explanations for such in-plane compression are 1) basal drag due to an asthensopheric ``magma wind" from regions of maximum tidal heating (and volcanic activity) and 2) enhanced lithospheric compression due to greater crustal burial and subsidence in regions of greater volcanism.
\leavevmode \epsfxsize=0.33\hsize \epsfbox{473.eps}

Affiliated with

Also associated with

No associations

Rating

Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern. 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 Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mountain Strike Orientations on Io: Evidence for a Global Stress Pattern. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1013055