| Piú votate - A Tribute To Mars Global Surveyor |
Craters-Lyot_Crater-PCF-LXTT.jpgFretted Terrain and Lyot Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 136 visiteCaption NASA:"Martian "fretted (--->corrugato/increspato) terrain" occurs in Regions of "Buttes" (--->colline "a ceppo") and "Mesas" (--->altopiani) that stand at the erosional margin where Northern low-lying Plains meet the higher-standing Cratered Uplands. Found mostly in the Mid-Northern Latitudes, some of the best examples of "Fretted Terrain" occur in the Deuteronilus Mensae Region. Here, the interaction of the process that creates the Mesas and Buttes, the processes that modify these surfaces after they form, and the relationship of both of these processes with the near-instantaneous event that formed the large Crater Lyot, provide us places to look to decipher this small but important piece of Martian Geological History.MareKromium
(2 voti)
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Argyre_Planitia-Dust_Devil-MGS-PCF-LXTT.jpgDust Devil in Argyre Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)156 visitenessun commentoMareKromium
(2 voti)
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Buttes-Argyre_Planitia-MGS-PCF-LXTT.jpgUnusually-looking Butte in Argyre Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 179 visitenessun commentoMareKromium
(2 voti)
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Craters-Unnamed_Crater-PIA07202-PCF-LXTT.jpgUnnamed Crater with Pedestal (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)230 visiteThis Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows an Unnamed Impact Crater, a little over 2 Km (> 1,2 mi) in diameter, located in Noachis Terra near 50,4° South and 14,3° West. The Crater's Bouldery Ejecta Blanket has protected underlying material from being eroded away by wind, leaving the Ejecta up on a low Pedestal. This picture covers an area about 3 Km (approx. 1,9 miles) across, and is illuminated by sunlight from the lower left.MareKromium
(2 voti)
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North_Polar_Features-Polygons-PIA07354-1.jpgNorth Polar "Polygons" (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)236 visitenessun commentoMareKromium
(2 voti)
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Craters-Buried_Crater-01.jpgUnder the Sand (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)216 visiteCaption NASA originale:"This MGS-MOC image shows a partially-buried crater in the North Polar Region of Mars.
The circular feature is surrounded and partly overlain by some of the many, many sand dunes in the area. The steepest slopes on each dune — their "slip faces" — face toward the SouthEast, indicating that the dominant winds responsible for sand transport in this Region come from the NorthWest".
Location near: 76,0° North; 82,2° West
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern SpringMareKromium
(2 voti)
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Craters-Tikhonravov_Crater-PIA03962-01.jpgSedimentary Rocks inside Tikhonravov Crater - Arabia Terra (Saturated Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)128 visiteCaption NASA originale:"This MGS-MOC image shows Layered Sedimentary Rocks exposed by erosion, then mantled by Dust, in Tikhonravov Crater in central Arabia Terra. Dark Slope Streaks occur where some of the Dust has slid down the layered Slopes".
Location near: 13,8° North Lat. and 324,8° West Long.
Image width: ~3 Km (~1,9 mi)
Illumination from: lower left
Season: Northern AutumnMareKromium
(2 voti)
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Craters-Exhumed_CFrater_in_Vastitas_Borealis-PIA03926-01.jpgA very unusually-looking Exhumed Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)139 visiteCaption NASA originale:"This MGS-MOC image shows a circular feature on the Martian Northern Plains. It was once a crater formed by meteoritic impact. It was completely filled and buried by and within layered material. Later, the layered materials have begun to be eroded away, re-exposing the old crater rims in the process".
Location near: 44,9° North Lat. and 264,7° West Long.
Image width: ~3 Km (~1,9) mi
Illumination from: lower left
Season: Northern Autumn
Nota: a giudicare dalle fattezze emergenti dalle sabbie, più che un antico cratere sepolto ed ora in corso di 'riesumazione', diremmo che potrebbe trattarsi di un modesto rilievo vulcanico (un "camino" infossato), caratterizzato da un discreto numero di caldere. Certo, non si è mai sentito parlare di un 'vulcano sepolto' e poi riportato alla luce dal concorso degli agenti geologici ed atmosferici ma, in fondo, anche le ipotesi più 'sfrontate', alle volte, possono rivelarsi esatte. MareKromium
(2 voti)
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Acidalia_Planitia-Unusual_Landforms-M0300102-PCF-LXTT-00.jpgUnusual Landforms in Acidalia Planitia (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)134 visitenessun commentoMareKromium
(2 voti)
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Thaumasia_Region-M1700805-PCF-LXTT.jpgA "Lake of Sand" in Thaumasia Region (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)137 visitenessun commentoMareKromium
(2 voti)
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Craters-Unnamed_Crater_in_Hellas_Planitia-1-MGS.jpgUnnamed Crater in Hellas Planitia (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)211 visiteCaption NASA originale:"This MGS-MOC image shows a large crater that formed by meteor impact into the layered material in which the buried crater is encased. The layered rock, in this case, has a light tone similar to the sedimentary rocks being explored by the MER Opportunity, thousands of kilometers away in Sinus Meridiani".
Location near: 24,9° South; 299,3° West
Image width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern Summer MareKromium
(2 voti)
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Tharsis_Region-Pit_Chain-MGS-PIA03930-PCF-LXTT.jpgCollapse Pit-Chain in Tharsis Region (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)269 visitenessun commentoMareKromium
(2 voti)
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