| Risultati della ricerca nelle immagini - "Unconform" |
North_Polar_Features-Unconformities-00.jpgNorth Polar "Unconformity" (Original NASA/MGS/MSSS b/w Frame)62 visiteCaption NASA originale:"This MGS-MOC image shows an Unconformity in an exposure of North Polar Layered Material, at which older Layers were cut-off and eroded before a new suite of Layers was deposited above them.
The Terrain in the entire scene was covered by a thin layer of CO2 Frost at the time this picture was acquired in June 2006".
Location near: 86,1° North Lat. and 208,5° West Long.
Image width: ~4 Km (~2,5 mi)
Illumination from: lower left
Season: Northern Spring
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North_Polar_Features-Unconformities-01.jpgNorth Polar "Unconformities" (Original NASA/MGS/MSSS b/w Frame)54 visiteCaption NASA originale:"This MGS-MOC image shows Layers exposed in the North Polar Region of Mars. The North Polar Cap is underlain by a thick sequence of Layered Material. The Layers are most commonly exposed on the slopes of troughs that are believed to have formed by Wind Erosion. The Layers give a banded appearance. In this example, some of the Layers are cut off (truncated) by other Layers. This truncation is a classic, textbook example of an Erosional Unconformity, a term commonly used by geologists. The Unconformity occurs when deposition of new layered material stops for a while and erosion occurs. Then, new layers form on top of the eroded surface and the older layers, at some point in time when the erosion stops and deposition of layered material resumes".
Location near: 78,6° North Lat. and 342,0° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: upper right
Season: Northern Spring
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North_Polar_Features-Unconformity-MGS-01.jpgNorth Polar "Unconformity" (Original NASA/MGS/MSSS b/w Frame)53 visiteCaption NASA originale:"This MGS-MOC image shows layered material exposed on a slope in the North Polar Region.
An "unconformity" is visible in the middle/lower left of the image, where layers are abruptly truncated. Unconformities are indicators of drastic change in the Region — the lower layers were deposited first, then eroded, then the upper layers were deposited".
Location near: 81,1° North Lat. and 75,2° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Spring
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North_Polar_Layers-PSP_001332_2620_RED.jpgUnconformity in the North Polar Layered Deposits (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)65 visitenessun commentoMareKromium
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