Exploration of Victoria Crater by the Mars Rover Opportunity

  title={Exploration of Victoria Crater by the Mars Rover Opportunity},
  author={S. Squyres and A. Knoll and R. Arvidson and J. Ashley and J. Bell and W. Calvin and P. Christensen and B. Clark and B. Cohen and P. A. D. de Souza and L. Edgar and W. Farrand and I. Fleischer and R. Gellert and M. Golombek and J. Grant and J. Grotzinger and A. Hayes and K. Herkenhoff and J. Johnson and B. Jolliff and G. Klingelh{\"o}fer and A. Knudson and R. Li and T. McCoy and S. McLennan and D. Ming and D. Mittlefehldt and R. Morris and J. W. Rice and C. Schr{\"o}der and R. Sullivan and A. Yen and R. Yingst},
  pages={1058 - 1061}
“Lake” Victoria? After having explored the Eagle and Endurance craters, which are separated by only 800 meters, the Mars Exploration Rover Opportunity spent 2 years at Victoria, a much larger impact crater located 6 kilometers south across Meridiani Planum. Sedimentary rocks previously analyzed at Eagle and Endurance point to local environmental conditions that included abundant liquid water in the ancient past. Now, an analysis of rocks in the walls of Victoria by Squyres et al. (p. 1058… Expand
Stratigraphic architecture of bedrock reference section, Victoria Crater, Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated bedrock outcrops exposed in several craters at Meridiani Planum, Mars, in an effort to better understand the role of surface processes in itsExpand
The Sedimentary Rock Record of Mars: Distribution, Origins, and Global Stratigraphy
The last decade of Mars exploration produced a series of discoveries that provide compelling evidence for the existence of sedimentary rocks on Mars. Previously, Mars was regarded principally as aExpand
Gale crater: the Mars Science Laboratory/Curiosity Rover Landing Site
  • J. Wray
  • Geology
  • International Journal of Astrobiology
  • 2012
Abstract Gale crater formed from an impact on Mars ∼3.6 billion years ago. It hosts a central mound nearly 100 km wide and ∼5 km high, consisting of layered rocks with a variety of textures andExpand
Aqueous History of Mars as Inferred From Landed Mission Measurements of Rocks, Soils, and Water Ice
The missions that have operated on the surface of Mars acquired data that complement observations acquired from orbit and provide information that would not have been acquired without surfaceExpand
Hypotheses for the origin of fine-grained sedimentary rocks at Santa Maria crater, Meridiani Planum
En route to Endeavour crater, the Mars Exploration Rover Opportunity embarked on a short but significant campaign at Santa Maria crater during sols 2450–2551. Santa Maria crater is a relatively youngExpand
Contrasting styles of water-rock interaction at the Mars Exploration Rover landing sites
The nature of ancient hydrological systems on Mars has been the subject of ongoing controversy, driven largely by a disconnect between observational evidence for flowing water on the Martian surfaceExpand
Geological Evidence of Planet‐Wide Groundwater System on Mars
Only the deepest basins considered in this study, those with bases deeper than −4000 m in elevation below the Mars datum, intercepted the water‐saturated zone and exhibit evidence of groundwater fluctuations, significantly increases the chance that biosignatures could be buried in the sediment. Expand
Amazonian chemical weathering rate derived from stony meteorite finds at Meridiani Planum on Mars
This work uses the oxidation of iron in stony meteorites investigated by the Mars Exploration Rover Opportunity at Meridiani Planum to derive chemical weathering rates determined for Mars, which are ∼1 to 4 orders of magnitude slower than that of similar meteorites found in Antarctica. Expand
The Mawrth Vallis region of Mars: A potential landing site for the Mars Science Laboratory (MSL) mission.
The proposed MSL landing site at Mawrth Vallis is located directly on the largest and most phyllosilicate-rich deposit on Mars and is therefore an excellent place to explore for evidence of life or habitability. Expand
Martian Geomorphology: introduction
This book concerns the Martian landscape; that collection of volcanoes, valleys, impact craters and ice caps that recent images reveal both to be strikingly familiar but also strangely alien to theExpand


The Opportunity Rover's Athena Science Investigation at Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum, and the rocks are interpreted to be a mixture of chemical and siliciclastic sediments formed by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation. Expand
Meteorites on Mars observed with the Mars Exploration Rovers
[1] Reduced weathering rates due to the lack of liquid water and significantly greater typical surface ages should result in a higher density of meteorites on the surface of Mars compared to Earth.Expand
Two Years at Meridiani Planum: Results from the Opportunity Rover
Observations from microscopic to orbital scales indicate that ancient Meridiani once had abundant acidic groundwater, arid and oxidizing surface conditions, and occasional liquid flow on the surface. Expand
Surface processes recorded by rocks and soils on Meridiani Planum, Mars: Microscopic Imager observations during Opportunity's first three extended missions
The Microscopic Imager (MI) on the Mars Exploration Rover Opportunity has returned images of Mars with higher resolution than any previous camera system, allowing detailed petrographic andExpand
Degradation of Victoria crater, Mars
[1] The ∼750 m diameter and ∼75 m deep Victoria crater in Meridiani Planum, Mars, is a degraded primary impact structure retaining a ∼5 m raised rim consisting of 1–2 m of uplifted rocks overlain byExpand
Chemistry and mineralogy of outcrops at Meridiani Planum
Analyses of outcrops created by the impact craters Endurance, Fram and Eagle reveal the broad lateral continuity of chemical sediments at the Meridiani Planum exploration site on Mars. ApproximatelyExpand
On the in situ aqueous alteration of soils on Mars
Abstract Early (>3 Gy) wetter climate conditions on Mars have been proposed, and it is thus likely that pedogenic processes have occurred there at some point in the past. Soil and rock chemistry ofExpand
Meteorite Accumulations on Mars
Abstract We have modeled single-body meteoroid atmospheric entry speeds at Mars and the effect of drag and ablation, and identify a narrow range of small masses (10–50 g) that should impact Mars atExpand
In Situ Evidence for an Ancient Aqueous Environment at Meridiani Planum, Mars
The geologic record at Meridiani Planum suggests that conditions were suitable for biological activity for a period of time in martian history. Expand
Stratigraphy and sedimentology of a dry to wet eolian depositional system, Burns formation, Meridiani Planum, Mars
Outcrop exposures of sedimentary rocks at the Opportunity landing site (Meridiani Planum) form a set of genetically related strata defined here informally as the Burns formation. This formation canExpand