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‘Hourglass’ shaped craters filled with traces of glacier
 
18 March 2005

‘Hourglass’ shaped craters filled traces of glacier
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This unusual structure with traces of a glacier is located in Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38º South and longitude 104º East. A so-called ‘block’ glacier, flowed from a flank of the massif, past mountains several thousand metres high, into a bowl-shaped impact crater (left), nine kilometres wide, which has been filled nearly to the rim. The block glacier then flowed into a 17 kilometre wide crater, 500 metres below, taking advantage of downward slope.

Credits: ESA/DLR/FU Berlin (G. Neukum)
 
 
Map showing location of craters in context
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A map showing these features in context, located in Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38º South and longitude 104º East.

Credits: FU Berlin/MOLANEW
 
 
Perspective view of ‘hourglass’ shaped craters, looking south-ea
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A perspective view obtained by the HRSC on board ESA's Mars Express, showing an unusual 'rock glacier' in the eastern Hellas region. Ice-rich material seems to have flowed from a small, 9 km wide crater into a larger 16 km wide crater below. The ice may have precipitated from the atmosphere a few millions years ago.

This unusual structure with traces of a glacier is located in Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38º South and longitude 104º East. This view is looking south-east.

Credits: ESA/DLR/FU Berlin (G. Neukum)

 
 
3D anaglyph view of ‘hourglass’ shaped craters
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A 3D view of this unusual structure with traces of a glacier, located in Promethei Terra at the eastern rim of the Hellas Basin, at about latitude 38º South and longitude 104º East. North is to the left.

Credits: ESA/DLR/FU Berlin (G. Neukum)
 


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