We use cookies to improve your experience, some are essential for the operation of this site.

Sketch of spreading segments separated by ridge-axis discontinuities.

Sketch of spreading segments separated by ridge-axis discontinuities.
Sketch of spreading segments separated by ridge-axis discontinuities.
Sketch of spreading segments separated by ridge-axis discontinuities.
Sketch of spreading segments separated by ridge-axis discontinuities.
Comments (0)
598649
Cook, John E.
Sketch of spreading segments separated by ridge-axis discontinuities.
Illustration
01/01/1997
Figure 2a.jpg
Date is approximate.
Caption from Oceanus magazine, Vol. 41, No. 1, Pg. 16:
Sketch of spreading segments separated by ridge-axis discontinuities in slow spreading ocean crust. The crust at inside corners (IC) differs significantly from that at outside corners (OC) in that it is more elevated, thinner, and faulted into a blockier fabric. This asymmetry is thought to be caused by consistent dip of faults from inside corners to beneath outside corners, so that lower crust and upper mantle are commonly exhumed in the IC footwalls of the faults. Near a segment center on the front face of the diagram, hot, upwelling mantle decompresses and partially melts, supplying magma that is intruded and extruded to form the ocean crust.
Courtesy of Brian Tucholke
© Woods Hole Oceanographic Institution
Labels
This item includes these files
Image
Image
Collections