Vesta-PIA14680-false-color-detail-enhanced-overlay
Image of cratered region on Vesta taken by the Dawn spacecraft. This is a combined version of planetary photojourna image PIA14680 with the false color portion overlaid and the details enhanced using a hipass filter of the grayscale image. This helps correlate the surface false color image with surface features:
Those orange pools north (?) of the crater appear really, really interesting. According to the false-color image spectral assignments correct they are lacking in green, thus iron-poor. (Green = small ratio of 750 nm to 900 nm, large reflectance at 900 nm, thus not much iron since iron absorbs at 900 nm).
One possibility is that a large impactor caused deep iron-poor stuff to get blown out of the big deep crater, then more deep iron poor stuff ooze up and out? Note how shallower bright rayed craters are yellow, thus hinting at an iron-rich shallow layer.
The E-W (?) streakiness in this image may be real and not an artifact.
See original version: photojournal.jpl.nasa.gov/catalog/PIA14680
Image credits: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Mike Malaska
Vesta-PIA14680-false-color-detail-enhanced-overlay
Image of cratered region on Vesta taken by the Dawn spacecraft. This is a combined version of planetary photojourna image PIA14680 with the false color portion overlaid and the details enhanced using a hipass filter of the grayscale image. This helps correlate the surface false color image with surface features:
Those orange pools north (?) of the crater appear really, really interesting. According to the false-color image spectral assignments correct they are lacking in green, thus iron-poor. (Green = small ratio of 750 nm to 900 nm, large reflectance at 900 nm, thus not much iron since iron absorbs at 900 nm).
One possibility is that a large impactor caused deep iron-poor stuff to get blown out of the big deep crater, then more deep iron poor stuff ooze up and out? Note how shallower bright rayed craters are yellow, thus hinting at an iron-rich shallow layer.
The E-W (?) streakiness in this image may be real and not an artifact.
See original version: photojournal.jpl.nasa.gov/catalog/PIA14680
Image credits: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Mike Malaska