Legend (Mars_geology_All_layers_100pct)

Contacts (2) Certain Approximate Internal

Structure (3) Caldera rim Channel axis Crater rim Graben axis Lobate flow Outflow Channel Pit crater chain Ridge Rille Scarp Spiral trough Wrinkle ridge Yardangs

Geology (4) lApd Ap lApc Hpe Hpu Hp Apu lHvf Ave lNv eHv Nve AHv lAvf lAv Hve Av lHv eNhm mNhm eAb lHb eHb HNb mAl lHl lHt Hto Ht eHt AHtu HNt Htu mNh lNh eHh eNh Nhe Nhu HNhu Aa ANa lAa AHi