Dr. Wolf Elston, noted volcanologist and early planetary geologist (and Professor Emeritus at the University of New Mexico), died Monday, Feb. 29, 2016.  He did Mars research using Mariner 9 data and early PG&G analog studies in the 1970s.  Several of us in the planetary geology community received our start as his students.

His profile in “Notable Geologists of New Mexico” prepared by the NM Geological Society can be found online at this link as well as in the published volume.
https://nmgs.nmt.edu/notablegeologists/Wolf_Elston/home.html

His obituary appeared in Sunday, March 6, 2016 Albuquerque Journal.  http://www.legacy.com/obituaries/abqjournal/obituary.aspx?n=wolfgang-elston&pid=177960249