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Blackhurst, R. L.; Jarvis, K.; Verchovsky, Sasha and Grady, Monica
(2003).
URL: http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1576...
Abstract
We are studying cryptoendolith-bearing Antarctic sandstones, to determine if the microbes alter the elemental composition of the rocks. If there is an effect, then it might be a tracer for the presence of micro-organisms in martian surface materials.