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- Lineated_valley_fill abstract "Lineated valley fill (LVF), also called lineated floor deposit, is a feature of the floors of some channels on Mars, exhibiting ridges and grooves that seem to flow around obstacles. Shadow measurements show that at least some of the ridges are several metres high. LVF is believed to be ice-rich. Hundreds of metres of ice probably lie protected in LVF under a thin layer of debris. The debris consists of wind-borne dust, material from alcove walls, and lag material remaining after ice sublimated (changed from a solid directly to a gas) from a rock-ice mixture. Some glaciers on Earth show similar ridges. High resolution pictures taken with HiRISE reveal that some of the surfaces of lineated valley fill are covered with strange patterns called closed-cell and open-cell brain terrain. The terrain resembles a human brain. It is believed to be caused by cracks in the surface accumulating dust and other debris, together with ice sublimating from some of the surfaces. The cracks are the result stress from gravity and seasonal heating and cooling. This same type of surface is present on Lobate debris aprons and Concentric crater fill so all three are believed to be related. Lineated floor deposits began as lobate debris aprons (LDAs), which form as material leaves narrow mountain valleys and spreads out as an apron. By tracing the paths of the ridges on LDAs, researchers have come to believe that the curved ridges characteristic of lobate debris aprons straighten out to form the more or less straight ridges of LVF.In the regions where LVF and LDAs occur, many craters have concentric crater fill: large ridges and other surfaces nicknamed brain terrain, after the surface corrugations of the human brain.The study of lineated valley fill and other features related to debris-covered ice has been greatly aided by the abundance of data received from Mars orbiting instruments. Excellent images have been obtained from THEMIS, MOC, CTX, and HiRISE. Detailed altimetry was collected by MOLA.The Mars Reconnaissance Orbiter's Shallow Radar gave a strong reflection from the top and base of LDAs, meaning that pure water ice made up the bulk of the formation (between the two reflections), strong evidence that the LDAs in Hellas Planitia are glaciers covered with a thin layer of rocks. Since lineated valley terrain is derived from lobate debris aprons, it probably contains buried ice—at least in places.".
- Lineated_valley_fill wikiPageExternalLink watch?v=_sUUKcZaTgA.
- Lineated_valley_fill wikiPageID "28022656".
- Lineated_valley_fill wikiPageLength "13064".
- Lineated_valley_fill wikiPageOutDegree "45".
- Lineated_valley_fill wikiPageRevisionID "660954427".
- Lineated_valley_fill wikiPageWikiLink Amazonian_period.
- Lineated_valley_fill wikiPageWikiLink Axial_tilt.
- Lineated_valley_fill wikiPageWikiLink Brain_terrain.
- Lineated_valley_fill wikiPageWikiLink CTX_(camera).
- Lineated_valley_fill wikiPageWikiLink Category:Geology_of_Mars.
- Lineated_valley_fill wikiPageWikiLink Category:Surface_features_of_Mars.
- Lineated_valley_fill wikiPageWikiLink Climate_of_Mars.
- Lineated_valley_fill wikiPageWikiLink Coloe_Fossae.
- Lineated_valley_fill wikiPageWikiLink Concentric_crater_fill.
- Lineated_valley_fill wikiPageWikiLink Deuteronilus_Mensae.
- Lineated_valley_fill wikiPageWikiLink Fretted_terrain.
- Lineated_valley_fill wikiPageWikiLink Geological_history_of_Mars.
- Lineated_valley_fill wikiPageWikiLink Geology_of_Mars.
- Lineated_valley_fill wikiPageWikiLink Glacier.
- Lineated_valley_fill wikiPageWikiLink Glaciers_on_Mars.
- Lineated_valley_fill wikiPageWikiLink Hellas_Planitia.
- Lineated_valley_fill wikiPageWikiLink Hellas_quadrangle.
- Lineated_valley_fill wikiPageWikiLink HiRISE.
- Lineated_valley_fill wikiPageWikiLink Ice_age.
- Lineated_valley_fill wikiPageWikiLink Ice_ages.
- Lineated_valley_fill wikiPageWikiLink Ismenius_Lacus_quadrangle.
- Lineated_valley_fill wikiPageWikiLink Lineated_Valley_Fill.
- Lineated_valley_fill wikiPageWikiLink Lineated_valley_fill.
- Lineated_valley_fill wikiPageWikiLink Lobate_debris_apron.
- Lineated_valley_fill wikiPageWikiLink Lobate_debris_aprons.
- Lineated_valley_fill wikiPageWikiLink Mars.
- Lineated_valley_fill wikiPageWikiLink Mars_Orbiter_Camera.
- Lineated_valley_fill wikiPageWikiLink Mars_Orbiter_Laser_Altimeter.
- Lineated_valley_fill wikiPageWikiLink Mars_Reconnaissance_Orbiter.
- Lineated_valley_fill wikiPageWikiLink Martian_dichotomy.
- Lineated_valley_fill wikiPageWikiLink Nilosyrtis_Mensae.
- Lineated_valley_fill wikiPageWikiLink Protonilus_Mensae.
- Lineated_valley_fill wikiPageWikiLink Reull_Vallis.
- Lineated_valley_fill wikiPageWikiLink Sublimation_(phase_transition).
- Lineated_valley_fill wikiPageWikiLink THEMIS.
- Lineated_valley_fill wikiPageWikiLink Water_on_Mars.
- Lineated_valley_fill wikiPageWikiLinkText "Lineated valley fill".
- Lineated_valley_fill wikiPageWikiLinkText "lineated valley fill".
- Lineated_valley_fill hasPhotoCollection Lineated_valley_fill.
- Lineated_valley_fill wikiPageUsesTemplate Template:Reflist.
- Lineated_valley_fill subject Category:Geology_of_Mars.
- Lineated_valley_fill subject Category:Surface_features_of_Mars.
- Lineated_valley_fill hypernym Feature.
- Lineated_valley_fill type Article.
- Lineated_valley_fill type Work.
- Lineated_valley_fill type Article.
- Lineated_valley_fill type Feature.
- Lineated_valley_fill comment "Lineated valley fill (LVF), also called lineated floor deposit, is a feature of the floors of some channels on Mars, exhibiting ridges and grooves that seem to flow around obstacles. Shadow measurements show that at least some of the ridges are several metres high. LVF is believed to be ice-rich. Hundreds of metres of ice probably lie protected in LVF under a thin layer of debris.".
- Lineated_valley_fill label "Lineated valley fill".
- Lineated_valley_fill sameAs m.0ch21_g.
- Lineated_valley_fill sameAs Q6553550.
- Lineated_valley_fill sameAs Q6553550.
- Lineated_valley_fill wasDerivedFrom Lineated_valley_fill?oldid=660954427.
- Lineated_valley_fill isPrimaryTopicOf Lineated_valley_fill.