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Periodic Bedrock Ridges at Oxia Planum and Chryse Planitia, Mars: Evidence for widespread aeolian erosion of an ancient surface by regional paleowinds
Fawdon, Peter; Grindrod, Peter M.; Balme, Matthew R. +4 more
Periodic Bedrock Ridges (PBRs) are repeating, symmetrical, wind-transverse, bedrock-abraded linear ridges that occur on Mars as parallel sets. Here, we extend our previous survey of PBRs at Oxia Planum - the landing site of ESA's ExoMars Rosalind Franklin rover - to include three additional sites along the margins of the circum-Chryse basin to und…
Ancient alluvial plains at Oxia Planum, Mars
Fawdon, Peter; Thomas, Nicolas; Grindrod, Peter M. +4 more
The geologic origin of the ancient, phyllosilicate-bearing bedrock at Oxia Planum, Mars, the ExoMars rover landing site, is unknown. The phyllosilicates record ancient aqueous processes, but the processes that formed the host bedrock remain elusive. Here, we use high-resolution orbital and topographic datasets from the HiRISE, CaSSIS and CTX instr…