UNANSWERED QUESTIONS ABOUT THE ORIGIN OF GYPSUM IN THE NORTH POLE ON MARS: HOW CAN THESE BE ADDRESSED?
SZYNKIEWICZ, Anna, Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, 1621 Cumberland Avenue, Knoxville, 37996 and BISHOP, Janice, Carl Sagan Center, The SETI Institute, Mountain View, CA 94043