Field Exploration and Life Detection Sampling for Planetary Analogue Research (FELDSPAR): Variability and Correlation in Biomarker and Mineralogy Measurements from Icelandic Mars Analogues

Gentry, D ; Amador, E ; Cable, M L ; Cantrell, T ; Chaudry, N ; Cullen, T ; Duca, Z ; Jacobsen, MKirby, J ; McCaig, H(Jet Propulsion Lab, California Inst of Tech, Pasadena, CA, United States)

关键词: BIOASSAY;    BIOMARKERS;    CHEMICAL ANALYSIS;    GEOCHEMISTRY;    IN SITU MEASUREMENT;    LANDING SITES;    LIFE DETECTORS;    MARS VOLCANOES;    REMOTE SENSING;    STRUCTURAL PROPERTIES (GEOLOGY);    BASALT;    CHARACTERIZATION;    CONTAMINATION;    EXTRATERRESTRIAL LIFE;    MARS SURFACE SAMPLES;    MINERALOGY;    PLANETARY ENVIRONMENTS;    SPATIAL DISTRIBUTION;   

RP-ID  :  ARC-E-DAA-TN52770

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来源: NASA Technical Reports Server

【 摘 要 】

In situ exploration of planetary environments allows biochemical analysis of sub-centimeter-scale samples; however, landing sites are selected a priori based on measurable meter- to kilometer-scale geological features. Optimizing life detection mission science return requires both understanding the expected biomarker distributions across sample sites at different scales and efficiently using first-stage in situ geochemical instruments to justify later-stage biological or chemical analysis. Icelandic volcanic regions have an extensive history as Mars analogue sites due to desiccation, low nutrient availability, and temperature extremes, in addition to the advantages of geological youth and isolation from anthropogenic contamination. Many Icelandic analogue sites are also rugged and remote enough to create the same type of instrumentation and sampling constraints typically faced by robotic exploration.