not sure if this is old news or not, but I was checkin out nassa.gov and found the article.. there are some realyl good pictures of the "water springs"
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig7_anno.jpg
they say the way they form is, liquid water comes from deep inside mars where it's still warm, but freezes once it gets to the surface... over time, the frozen water acts like a dam keeping the liquid water where it's hot until enough pressure builds up, and it shoots out like a geyser... pretty cool stuff
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig2_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig1_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig3_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig4_anno.jpg
They say the dark streaks are the new eruptions, while the light streaks are older ones...
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig10_anno.jpg
this pic is of new sediments being unearthed because of the liquid water
http://photojournal.jpl.nasa.gov/figures/PIA09027_fig1_anno.jpg
Edit: more pics added
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig7_anno.jpg
they say the way they form is, liquid water comes from deep inside mars where it's still warm, but freezes once it gets to the surface... over time, the frozen water acts like a dam keeping the liquid water where it's hot until enough pressure builds up, and it shoots out like a geyser... pretty cool stuff
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig2_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig1_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig3_anno.jpg
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig4_anno.jpg
They say the dark streaks are the new eruptions, while the light streaks are older ones...
http://photojournal.jpl.nasa.gov/figures/PIA09030_fig10_anno.jpg
this pic is of new sediments being unearthed because of the liquid water
http://photojournal.jpl.nasa.gov/figures/PIA09027_fig1_anno.jpg
Edit: more pics added