A field guide to finding fossils on Mars
The Martian surface is cold, dry, exposed to biologically harmful radiation and apparently
barren today. Nevertheless, there is clear geological evidence for warmer, wetter intervals in …
barren today. Nevertheless, there is clear geological evidence for warmer, wetter intervals in …
Orbital identification of hydrated silica in Jezero crater, Mars
Silica has the highest demonstrated potential of any phase to preserve microfossils on Earth
and therefore may host potential biosignatures on Mars. We detected hydrated silica in …
and therefore may host potential biosignatures on Mars. We detected hydrated silica in …
Experimental diagenesis of organo-mineral structures formed by microaerophilic Fe (II)-oxidizing bacteria
Twisted stalks are organo-mineral structures produced by some microaerophilic Fe (II)-
oxidizing bacteria at O2 concentrations as low as 3 μM. The presence of these structures in …
oxidizing bacteria at O2 concentrations as low as 3 μM. The presence of these structures in …
[HTML][HTML] Early entombment within silica minimizes the molecular degradation of microorganisms during advanced diagenesis
Most ancient organic microfossils delicately preserved in 3D have been found in cherts.
Although entombment within silica has been shown to promote morphological preservation …
Although entombment within silica has been shown to promote morphological preservation …
A late Paleoproterozoic microfossil community from siliceous granules, Dahongyu Formation, North China
After the first great oxygenation event (GOE), microorganism communities flourished in
various habitats in shallow marine settings as a response to elevated oxygen contents in …
various habitats in shallow marine settings as a response to elevated oxygen contents in …
Biotransformation of Scheelite CaWO4 by the Extreme Thermoacidophile Metallosphaera sedula: Tungsten–Microbial Interface
The tungsten–microbial interactions and microbial bioprocessing of tungsten ores, which are
still underexplored, are the focus of the current study. Here we show that the …
still underexplored, are the focus of the current study. Here we show that the …
Limited influence of Si on the preservation of Fe mineral‐encrusted microbial cells during experimental diagenesis
The reconstruction of the history of microbial life since its emergence on early Earth is
impaired by the difficulty to prove the biogenicity of putative microfossils in the rock record …
impaired by the difficulty to prove the biogenicity of putative microfossils in the rock record …
Changes of aliphatic C–H bonds in cyanobacteria during experimental thermal maturation in the presence or absence of silica as evaluated by FTIR …
Aliphatic C–H bonds are one of the major organic signatures detected in Proterozoic organic
microfossils, and their origin is a topic of interest. To investigate the influence of the …
microfossils, and their origin is a topic of interest. To investigate the influence of the …
Organic composition and diagenetic mineralization of microfossils in the Ediacaran Doushantuo chert nodule by Raman and petrographic analyses
We studied microfossils and their embedding matrix minerals from chert nodules in the
Ediacaran Doushantuo Formation of the Yangtze Gorges area in South China using Raman …
Ediacaran Doushantuo Formation of the Yangtze Gorges area in South China using Raman …
Exploring the microbial biotransformation of extraterrestrial material on nanometer scale
Exploration of microbial-meteorite redox interactions highlights the possibility of
bioprocessing of extraterrestrial metal resources and reveals specific microbial fingerprints …
bioprocessing of extraterrestrial metal resources and reveals specific microbial fingerprints …