Mars: Nature and evolution of young latitude-dependent water-ice-rich mantle
Article first published online: 3 AUG 2002
Copyright 2002 by the American Geophysical Union.
Geophysical Research Letters
Volume 29, Issue 15, pages 14-1–14-4, August 2002
How to Cite
Mars: Nature and evolution of young latitude-dependent water-ice-rich mantle, Geophys. Res. Lett., 29(15), doi:10.1029/2002GL015392, 2002., and ,
- Issue published online: 3 AUG 2002
- Article first published online: 3 AUG 2002
- Manuscript Accepted: 13 JUN 2002
- Manuscript Revised: 12 JUN 2002
- Manuscript Received: 27 APR 2002
 High-resolution altimetry and imaging have revealed the presence of a meters-thick sedimentary layer at middle to high northern and southern latitudes presently covering at least 23% of the planet. The layer is interpreted to be water-ice-rich, and to undergone degradation recently. Its activity very likely coincided with the last major obliquity excursion a few hundred thousand years ago. The majority of the layer at higher latitudes, however, persisted for a much longer time in the Late Amazonian. Stratigraphic analysis suggests a complex history of successive episodes of deposition and removal. Repeated deposition and removal of the mantles are interpreted to be responsible for the unusual statistical properties of kilometer-scale topography in the transitional mid-latitude zones.