Home Life in a Mars analog: Microbial activity associated with carbonate cemented lava breccias from NW Spitsbergen Life in a Mars analog: Microbial activity associated with carbonate cemented lava breccias from NW Spitsbergen Amundsen, HEF; Steele, A; Fogel, M; Mysen, B; Kihle, J; Schweizer, M; Toporski, J; Treiman, AH 2004 GEOCHIMICA ET COSMOCHIMICA ACTA