Looking into Victoria crater
Processed image. HiRISE colour product from the 3 October 2006 observation TRA_000873_1780. Victoria’s scalloped rim and dune field are visible; this gallery copy has no rover-route overlay.
Public domain · credited HiRISE mission imagery, resized to WebP
· Original image source · Image licenceOne crater seen from orbit, from the rim and at an oblique angle.
- World
- Mars
- Case date or period
- Image archive · 2006–2009
Look closer
Opportunity explored a scalloped crater rim whose cliffs expose layers below the surface. From orbit, the bays and promontories become a map of possible routes and viewing positions.
Follow the evidence
Move between the overhead image and Cape Verde panorama to connect a map with a place you could imagine standing. The oblique orbital view introduces another perspective on the same terrain.
Wind-built beds, altered by groundwater
Steve Squyres and colleagues interpreted Victoria’s cross-bedded rocks as ancient windblown dunes that later hardened into sandstone. Opportunity’s instruments found depth-dependent chemistry and larger mineral spheres in deeper material, supporting groundwater alteration. Comparable chemical trends at Endurance crater, roughly six kilometres away, made this a regional history rather than a process confined to Victoria. The impact exposed these older deposits; the present crater shape is not the original shape of the dunes.
A pale band is not always a new bed
Lauren Edgar and colleagues’ 2012 stratigraphic study distinguishes deposition from later rock alteration. In Duck Bay, the pale Smith band represents a recrystallized zone, while its upper boundary also coincides with an older erosion surface. Elsewhere, the altered band cuts across the original layering. Following colour alone could therefore join unlike features. Geometry across Duck Bay and Cape Verde helps connect deposits and erosion surfaces even where their elevations differ.
Sources & further reading
- Victoria Crater at Meridiani Planum — NASA Image and Video Library / JPL
- Panorama from Cape Verde — NASA Image and Video Library / JPL
- Oblique View of Victoria Crater — NASA Image and Video Library / JPL
- NASA Rover Sees Variable Environmental History at Martian Crater — NASA / JPL; Squyres and colleagues’ Science results
- Stratigraphic architecture of bedrock reference section, Victoria Crater, Meridiani Planum, Mars — Edgar and colleagues (2012) — USGS / research chapter abstract
- Victoria Crater at Meridiani Planum — TRA_000873_1780 — University of Arizona / HiRISE Science Team
- At Bright Band Inside Victoria Crater — NASA / JPL Photojournal