GEO 330 Lecture Notes - Lecture 14: Valles Marineris, Melas Chasma, Chasma
30 Mar 2018
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Document Summary
East of melas chasma is coprates chasma, consisting of several parallel sections divided by ridges. Flat-floor of coprates is generally free of landside material. East of coprates, valles mariners canyon system changes significantly. Three canyons, ganges, capri, and eos are east of coprates. All have irregular outlines rather than being bounded by fault scarps. Ganges, capri, and eos don"t follow wnw-ese trend of other canyons in valles mariners system. Canyons start to turn northward towards chryse basin. Capri chasma contains layered mounds rich in sulfates and hematite. Floors covered with small knobs and hills, except for smooth areas with streamlined forms. Many of these knobs are rich in sio2 phase such as chert or opaline silica. East and south of ganges, channels start in plains and flow into canyon. East of eos, canyons transition to circum chyrse chaos terrain. Canyons cut into layered volcanic rocks of hesperian age that make up the surrounding hesperian plains.
