USGS IMAP 2010: Geologic map of the Valles Marineris region, Mars
By Planetary Geologic Mapping
2010 (approx.)

Detailed Description
USGS IMAP 2010: Geologic map of the Valles Marineris region, Mars
By N. E. Whitbeck, K. L. Tanaka, and D. H. Scott
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i2010
Sources/Usage
Public Domain.