authors Sherwood Lollar, B Lacrampe-Couloume, G Slater, Greg Ward, J Moser, DP Gihring, TM Lin, L-H Onstott, TC
keywords BASALT AQUIFERS GOLD-MINES Geochemistry & Geophysics HYDROGEN HYDROTHERMAL VENT ISOTOPIC FRACTIONATION MICROBIAL ECOSYSTEMS MID-ATLANTIC RIDGE Mars NATURAL GASES Physical Sciences SACRAMENTO BASIN SOUTH-AFRICA Science & Technology abiogenic autotrophy deep biosphere hydrogen methane