• Source: Brain terrain

Brain terrain, also called knobs-brain coral and brain coral terrain, is a feature of the Martian surface, consisting of complex ridges found on lobate debris aprons, lineated valley fill and concentric crater fill. It is so named because it suggests the ridges on the surface of the human brain. Wide ridges are called closed-cell brain terrain, and the less common narrow ridges are called open-cell brain terrain. It is thought that the wide closed-cell terrain contains a core of ice, and when the ice disappears the center of the wide ridge collapses to produce the narrow ridges of the open-cell brain terrain. Shadow measurements from HiRISE indicate the ridges are 4-5 meters high. Brain terrain has been observed to form from what has been called an "Upper Plains Unit." The process begins with the formation of stress cracks. The upper plains unit fell from the sky as snow and as ice coated dust.
Today it is widely accepted that glacier-like forms, lobate debris aprons, lineated valley fill, and concentric fill are all related in that they have the same surface texture. Glacier-like forms in valleys and cirque-like alcoves may coalesce with others to produce lobate debris aprons. When opposing lobate debris aprons converge, linear valley fill results. They probably all contain ice-rich material.
Many of these features are found in the Northern hemisphere in parts of a boundary called the Martian dichotomy, mostly between 0 and 70 E longitudes. Near this area are regions that are named from ancient places: Deuteronilus Mensae, Protonilus Mensae, and Nilosyrtis Mensae.
Lobate debris aprons, lineated valley fill, and concentric fill probably have dirt and rock debris covering huge deposits of ice.
































































































See also


Concentric crater fill – Landform where the floor of a crater is mostly covered by parallel ridges
Glacier – Persistent body of ice that moves downhill under its own weight
Glaciers on Mars – Extraterrestrial bodies of ice
Ismenius Lacus quadrangle – Map of Mars
Lineated valley fill – Martian geologic feature
Lobate debris apron – Geological features on Mars
Martian dichotomy – Geomorphological feature of Mars
Nilosyrtis Mensae – Fretted terrain in the Casius quadrangle on Mars
Protonilus Mensae – Martian plain
Upper Plains Unit – Surface features of MarsPages displaying short descriptions of redirect targets




References

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• Bruno Mars
• Jung Jin-young (pemeran)
• Daftar karakter Accel World
• YG Entertainment
• Sulli
• Indonesian Idol (musim 12)
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• Daftar karakter Fairy Tail
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• Indonesian Idol (musim 10)
• Brain terrain
• Common surface features of Mars
• Amazonis Planitia
• Arabia Terra
• Protonilus Mensae
• Mars sol
• Phobos monolith
• Ismenius Lacus quadrangle
• EscaPADE
• Olympus Mons