| Ultimi arrivi - Mars Reconnaissance Orbiter (MRO) |
ESP_023024_1685_RED_abrowse-PCF-LXTT-00.jpgUplifted Rocks in Crater Center (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)179 visiteCaption NASA:"Impacts forming Craters excavate holes deep into the ground, exposing rocks from far below the present Surface. At the center of large Craters, rocks from still further below can be uplifted, rebounding upwards during the last stages of Crater formation. This image shows the Central Peak of a large Impact Crater located in the Southern Highlands of Mars".MareKromiumLug 26, 2011
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ESP_023024_1685_RED_abrowse-PCF-LXTT-01.jpgUplifted Rocks in Crater Center (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)177 visiteCaption NASA:"This EDM reveals varied colors, suggesting that a range of rock types are present. Studies of these rocks from far below the Surface help us to understand ancient Mars as well as the processes that have altered the rocks after they formed and were buried".MareKromiumLug 26, 2011
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ESP_022632_1670_RED_abrowse-PCF-LXTT-00.jpgFeatures of the Valles Marineris (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)208 visitenessun commentoMareKromiumLug 26, 2011
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Craters-Gale_Crater-PIA14307-PCF-LXTT.jpgCemented Fractures in the Mountain inside Gale Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)135 visiteOne type of feature of scientific interest on the mountain inside Gale Crater is exposure of Cemented Fractures, evidence that groundwater once reached to at least that height of the Mountain.
This image of that part of the mountain, taken by the High Resolution Imaging Science Experiment camera on NASA's Mars Reconnaissance Orbiter, shows symmetry in how material on one side of each fracture is balanced by material on the other side. This pattern indicates that mineral-saturated groundwater once filled the fractures. The water deposited minerals on both sides of the opening, eventually filling the gap.MareKromiumLug 24, 2011
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PSP_005442_1660_RED_abrowse-PCF-LXTT.jpgGraben in Memnonia Fossae (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)135 visiteThis HiRISE image shows a Graben (roughly 2,5 Km or 1,6 miles wide) cutting a Ridge near Memnonia Sulci, a Region of Mars West of the massive Tharsis Volcanic Province. A Graben is a Trough created when 2 normal Faults (Faults dipping at an angle, with the overhanging wall sliding downwards) opposite each other lower the block of rock in between them. They are commonly associated with the tectonically-driven extension of a region and are also found in volcanic areas. Graben occur on many planets and moons, including Earth.
In this case, the Graben (running roughly East-West, indicating extension in the North-South direction) is cutting a Ridge, showing that it is more recent. The Ridge may also be tectonic in origin, therefore representing a different epoch and different type of tectonic activity.
Relationships like this can be used to determine the sequence of events in the history of the Region. The Graben Walls can also expose the local rocks at depth; in this case there is no obvious indication of Layering.MareKromiumLug 22, 2011
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ESP_022684_0950_RED_abrowse-PCF-LXTT.jpgSouth Polar Monitoring (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)117 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022616_1300_RED_abrowse.jpgDunefield on the Floor of Matara Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)125 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022607_1725_RED_abrowse.jpgPeri-Equatorial Dunefield (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)118 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022643_2235_RED_abrowse.jpgNorthern Arabia Terra (Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)126 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022644_1085_RED_abrowse.jpgSouthern Dunefield (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)172 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022614_1635_RED_abrowse.jpgCentral Peak of an Unnamed Crater in Tyrrhena Terra (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 174 visitenessun commentoMareKromiumLug 22, 2011
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ESP_022637_2090_RED_abrowse.jpgFlow Features between Tartarus Montes and Phlegra Dorsa (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)195 visitenessun commentoMareKromiumLug 22, 2011
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