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ToSeek
2005-Mar-18, 05:59 PM
Fire and Ice: Mars Images Reveal Recent Volcanic and Glacial Activity (http://www.spaceref.com/news/viewpr.html?pid=16423)


Shifting glaciers and exploding volcanoes aren't confined to Mars' distant past, according two new reports in the journal Nature.

Glaciers moved from the poles to the tropics 350,000 to 4 million years ago, depositing massive amounts of ice at the base of mountains and volcanoes in the eastern Hellas region near the planet's equator, based on a report by a team of scientists analyzing images from the Mars Express mission. Scientists also studied images of glacial remnants on the western side of Olympus Mons, the largest volcano in the solar system. They found additional evidence of recent ice formation and movement on these tropical mountain glaciers, similar to ones on Mount Kilimanjaro in Africa.

In a second report, the international team reveals previously unknown traces of a major eruption of Hecates Tholus less than 350,000 million years ago. In a depression on the volcano, researchers found glacial deposits estimated to be 5 to 24 million years old.

um3k
2005-Mar-18, 11:57 PM
350,000 million years? Wouldn't that make it many times older than the universe? :o

The Supreme Canuck
2005-Mar-19, 12:11 AM
It would, but it says 350 000 to 4 million years.

um3k
2005-Mar-19, 12:47 AM
I meant the big number in this paragraph:

In a second report, the international team reveals previously unknown traces of a major eruption of Hecates Tholus less than 350,000 million years ago. In a depression on the volcano, researchers found glacial deposits estimated to be 5 to 24 million years old.

The Supreme Canuck
2005-Mar-19, 12:55 AM
Well, shoot. Guess I'd better read the whole thing the next time. #-o

W.F. Tomba
2005-Mar-19, 01:29 AM
That has to be a mistake---although I'm quite confident that the eruption did take place less than 350,000 million years ago . . .

01101001
2005-Mar-19, 08:34 AM
The horse's own mouth (Discovery of a flank caldera and very young glacial activity at Hecates Tholus, Mars (http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=36834#)) said:


Here we present new image and topographic data from the High Resolution Stereo Camera that reveal previously unknown traces of an explosive eruption at 308N and 1498 E on the northwestern flank of the shield volcano Hecates Tholus. The eruption created a large, 10-km-diameter caldera, ~350million years ago.

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As reported in the Mainly Martian Blog (http://mainlymartian.blogs.com/semijournal/), ESA is archiving PDF copies of papers that have flowed from ESA projects -- such as the recent Mars papers in Nature and Science. See Latest Publications (http://sci.esa.int/science-e/www/area/index.cfm?fareaid=1)