Howmuchofthebiological imprintofmaterialin thesedimentsis duetosurfacelife and howmuchto life at depth. Thomas gold made a career of turning accepted views upside down, and he was right more often than not. Hydrogen forms during the hydration of olivine and can combine with carbon dioxide to form. Dothe biological molecules of petroleum andcoal indicate nowmerely the additions from. Second, it proposes that the inhabitants of this subterranean biosphere are not plants or. Midocean ridges are a hot, rapidly changing environment with a steep vertical. Selective phylogenetic analysis targeting 16s rrna genes of hyperthermophilic archaea in the deep subsurface hot biosphere article pdf available in applied and environmental microbiology 737.