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A microbial consortium preserved in shallow water carbonaceous chert of the Paleoarchean (∼3400Ma) Strelley Pool Formation (Pilbara Craton, northwestern Western Australia) is composed of copiously abundant globular “cobweb-like” swirls of randomly oriented filaments intermingled with laterally extensive flat-laminated masses of subparallel filaments. The shallow-water (possibly mudflat-like) habitat...
Late Cryogenian deformation of the Reynella Siltstone near Hallett Cove, South Australia has been interpreted as shallow marine methane seeps, which were furthermore proposed to have played a role in deglaciation from “Snowball Earth”. Re-examination and new analyses of these same outcrops confirms an earlier interpretation of this intrastratal deformation as periglacial paleosols, which are evidence...
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