Browsing Department of Earth Science by Journals "Geobiology"

Now showing items 1-2 of 2

A late Paleoproterozoic (1.74 Ga) deep-sea, low-temperature, iron-oxidizing microbial hydrothermal vent community from Arizona, USA

Little, Crispin T.S.; Johannessen, Karen Cecilie; Bengtson, Stefan; Chan, Clara S.; Ivarsson, M.; Slack, John F.; Broman, Curt; Thorseth, Ingunn Hindenes; Grenne, Tor; Rouxel, Olivier J.; Bekker, Andrey (Journal article; Peer reviewed, 2021)

Modern marine hydrothermal vents occur in a wide variety of tectonic settings and are characterized by seafloor emission of fluids rich in dissolved chemicals and rapid mineral precipitation. Some hydrothermal systems vent ...
On the biogenicity of Fe-oxyhydroxide filaments in silicified low-temperature hydrothermal deposits: Implications for the identification of Fe-oxidizing bacteria in the rock record

Johannessen, Karen Cecilie; McLoughlin, Nicola; Vullum, Per Erik; Thorseth, Ingunn Hindenes (Peer reviewed; Journal article, 2020)

Microaerophilic Fe(II)‐oxidizing bacteria produce biomineralized twisted and branched stalks, which are promising biosignatures of microbial Fe oxidation in ancient jaspers and iron formations. Extracellular Fe stalks ...