USGS SIM 2888: Geologic map of the northern plains of Mars
USGS SIM 2888: Geologic map of the northern plains of MarsUSGS SIM 2888: Geologic map of the northern plains of Mars
By K. L. Tanaka, J. A. Skinner, and T. M. Hare
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/sim2888