Ice sculptures fill the deepest parts of Mars

Apr 03, 2012 by Jason Major, Universe Today
Curious "lava lamp" landforms in Mars' Hellas Basin may have been created by ice. Credit: NASA/JPL/University of Arizona

One of the “weirdest and least understood” areas of Mars, the enormous Hellas Impact Basin contains strange flowing landforms that bespeak of some specialized and large-scale geologic process having taken place. The HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter recently captured the image above, showing what’s being called “lava lamp terrain” — stretched and contorted surface that looks like overworked modeling clay or pulled taffy… or, with a bit of imagination, the melted, mesmerizing contents of a party light from another era.

At 1,400 miles (2,300 km) across, ’ Hellas is one of the largest impact craters in the entire Solar System. Its vast interior sinks to a depth of about 23,000 feet (7152 meters) below Mars’ average surface elevation (Martian “sea level”, if you will) and thus its floor is often shrouded by haze and dust, making visual imaging difficult.

The “lava lamp” terrain is just one of many different types of landforms that are found in the basin, although many of these banded features are found in the northwest area — which is also the deepest part of the basin. If there had been water in the region at some point in the planet’s history, it would have concentrated there.

Example of banded terrain. Compare the relatively fresh appearance of the bands with the older terrain seen to the left of this sub-image. Credit: NASA/JPL/University of Arizona/N. Thomas et al.

Although the texture at first appears as if it could be volcanic in origin, it’s thought that flowing water or ice may actually be the source.

Researchers are currently working to determine how the Hellas Basin became so smoothly sculpted. Nicolas Thomas, Professor of Experimental Physics at the University of Bern, Switzerland, told Universe Today:

“There are a lot of very interesting images from this area and we are trying to get more data (including stereo) to understand better what’s going on and to try to establish what process is responsible for the numerous bizarre features we see. We are hoping to make some more progress in the next few months.”

This hypothesis is also in line with the possibility of Hellas Basin having once been a giant lake.

“Together with the observations of isolated areas and the lack of obvious caldera(s), it is difficult to envisage a volcanic origin for these features and we currently tend towards a mechanism involving ,” Thomas stated in an abstract of a presentation given at the Europlanet Conference in 2010.

Read the full abstract here, and see this and more high-resolution images from Mars on the HiRISE website.

Explore further: DNA survives critical entry into Earth's atmosphere

add to favorites email to friend print save as pdf

Related Stories

Clouds get in the way on Mars

Mar 23, 2012

The science team from the HiRISE camera on the Mars Reconnaissance Orbiter wanted to take another look at a region of icy sand dunes on Mars to look for seasonal changes as spring is now arriving on the Red ...

Incredible ‘sideways’ look at Mercury’s limb

Nov 29, 2011

Wow -- just wow! Here’s a unique, jaw-dropping, and beautiful look at Mercury from the MESSENGER spacecraft, in a mosaic created from nine images taken by the Narrow Angle Camera (NAC) of the Mercury ...

Exposed rocks point to water on ancient Mars

Oct 14, 2010

A new discovery of hydrothermally altered carbonate-bearing rocks on Mars points toward habitable environments deep in the martian crust, a Planetary Science Institute researcher said.

Mars Express sees deep fractures on Mars

May 06, 2011

Newly released images from ESA's Mars Express show Nili Fossae, a system of deep fractures around the giant Isidis impact basin. Some of these incisions into the martian crust are up to 500 m deep and probably ...

Recommended for you

Rosetta's comet: In the shadow of the coma

2 hours ago

This NAVCAM mosaic comprises four individual images taken on 20 November from a distance of 30.8 km from the centre of Comet 67P/C-G. The image resolution is 2.6 m/pixel, so each original 1024 x 1024 pixel ...

DNA survives critical entry into Earth's atmosphere

23 hours ago

The genetic material DNA can survive a flight through space and re-entry into the earth's atmosphere—and still pass on genetic information. A team of scientists from UZH obtained these astonishing results ...

Team develops cognitive test battery for spaceflight

Nov 26, 2014

Space is one of the most demanding and unforgiving environments. Human exploration of space requires astronauts to maintain consistently high levels of cognitive performance to ensure mission safety and success, and prevent ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.