Hesperian equatorial thermokarst lakes in Ares Vallis as evidence for transient warm conditions on Mars Warner, N. ; Gupta, S. ; Kim, J. -R. ; Lin, S. -Y. ; Muller, J. -P. Abstract Publication: Geology Pub Date: January 2010 DOI: 10.1130/G30579.1 Bibcode: 2010Geo....38...71W