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Mamers Valles
The Mamers Valles are a set of channels in a long, winding canyon in the north of Mars. They cover 1000 km, cutting through the cratered uplands of the Arabia Terra, from the Cerulli crater to the Deuteronilus Mensae near the edge of Mars' vast northern lowlands. Through their midsection, they average a width of 25 km and a depth of 1200 meters. Theories of canyon formation include that Mamers Valles were formed by either water or lava, with the flow from south to north and additional material flowing from the slope toward the valley floor. According to the most popular theory, linear features on the valley bottom indicate possible ice flows and that ice may currently be plentiful. The Mamers Valles are dated to the early Hesperian period, about 3.8 billion years ago. An infeeder canyon at the northwestern edge of the Mamers Valles, near their mouth (seen at the bottom of the photo at lower right), is a box canyon. Such canyons (with rounded headwalls and no obvious ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mamers Valles
The Mamers Valles are a set of channels in a long, winding canyon in the north of Mars. They cover 1000 km, cutting through the cratered uplands of the Arabia Terra, from the Cerulli crater to the Deuteronilus Mensae near the edge of Mars' vast northern lowlands. Through their midsection, they average a width of 25 km and a depth of 1200 meters. Theories of canyon formation include that Mamers Valles were formed by either water or lava, with the flow from south to north and additional material flowing from the slope toward the valley floor. According to the most popular theory, linear features on the valley bottom indicate possible ice flows and that ice may currently be plentiful. The Mamers Valles are dated to the early Hesperian period, about 3.8 billion years ago. An infeeder canyon at the northwestern edge of the Mamers Valles, near their mouth (seen at the bottom of the photo at lower right), is a box canyon. Such canyons (with rounded headwalls and no obvious ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
