Evidence for ancient grounding icebergs on Mars?

[3488]

Fascinating!!!!!

Space.Com article.

By Charles Q. Choi.

Ancient Mars once had surprisingly frigid primeval oceans complete with their own icebergs, new evidence suggests.

There are currently two leading ideas for what the climate of ancient Mars might have been like.

One is that it was cold and dry, cont........

Has MRO HiRISE found evidence for ancient grounding icebergs on Mars?

Andrew Brown.

 

[3488]

Link provided by LavaMan in the comments section.
MRO HiRISE ESP_018747.

To me those cones looked volcanic, rootless cones, to me many rocks seen by Phoenix Mars Lander in Scandia Colles, Vastitas Borealis, also looked basaltic, though some did look like mudstones, but certainly a fair few did look volcanic.

Below, Phoenix Mars Lander Mission Success Panorama. Certainly this is a tundra landscape on Mars, the only tundra landscape seen that is not on Earth. However, is the subsurface ice from an ancient ocean, or is it subsurface ice on top of a lava plain!!!!


Same as above, but is a higher resolution 10.5 MB panorama.


LavaMan says that there are serious doubts about the vast northern ocean, rather it is a gigantic smooth lava plain, that may have been under glaciation at some point, rather than an ancient ocean. If so Vastitas Borealis would be akin to the lava plains on Mercury or the mare on the Moon.

Below two enlarged actual colour crops, NASA / ASU / HiRISE.

Andrew Brown.

 

[kg]

What an interesting landscape! The glaciers of the past left us with many kettle holes in my area. Are any of these depressions what you would call a kettle hole?

 

[3488]

Hi kg, could well be Kettle Holes.

It is an amazing landscape indeed.

Finally got the IAS viewer to work again, so have been able to do the folowing. All are clickable thumbnails. loads of small rootless volcanic cones & the suspected grounding iceberg grooves. Boulders are visible. Each thumbnail is only a few hundred metres wide.





Andrew Brown.

 

[EarthlingX]

To see what kettle holes look like on Earth :

Wiki : Kettle (landform)

A kettle (kettle hole, pothole) is a shallow, sediment-filled body of water formed by retreating glaciers or draining floodwaters.

There's also a long list of examples.


This might also be worth to check :

Wiki : Glacial landform

Glacial landforms are those created by the action of glaciers. Most of today's glacial landforms were created by the movement of large ice sheets during the Quaternary glaciations. Some areas, like Fennoscandia and the southern Andes, have extensive occurrences of glacial landforms; other areas, such as the Sahara, display very old fossil glacial landforms.

Are there any other supposedly glacial landforms near, like striations, moraine, .. ? Could any of this be seen by HiRISE ?