Abiotic synthesis of graphitic carbons in the Eoarchean Saglek-Hebron metasedimentary rocks

Z Guo, D Papineau, J O'Neil, H Rizo, ZQ Chen… - Nature …, 2024 - nature.com
Graphite in metasedimentary rocks of the Eoarchean Saglek-Hebron Gneiss Complex
(Canada) is depleted in 13C and has been interpreted as one of the oldest traces of life on …

Assessing micrometer-scale contamination from organic materials in serpentinite analysis

J Nan, K Zhu, J Ren, W Yao, X Peng - Science of The Total Environment, 2023 - Elsevier
Serpentinization of peridotite provides a significant source of energy for the subseafloor
biosphere and abiotic organic synthesis. The presence of diverse micrometer-scale organic …

Preservation of biosignatures in Neoproterozoic phosphorites metamorphosed at temperatures> 450° C

K Cao, Z She, D Papineau, J Nan, C Chen… - Chemical …, 2024 - Elsevier
There is still much controversy over whether apatite and graphite can be used as fingerprint
mineral assemblages to preserve biosignatures in ancient sedimentary rocks that …

A New Insight into the Genesis of Graphite Deposits in Madagascar Using U–Pb Zircon Dating and Electron Microprobe Analysis

MJ Yang, YJ Di, D Zhang, DT Wu, Y Fang, XM Zhang - Minerals, 2024 - mdpi.com
Madagascar is globally recognized as an important producer of high-quality flaky graphite.
However, current research on graphite deposits in Madagascar remains insufficient …

Microbial Biosignatures Associated with Iddingsite in Hadal Basalts from the Southern Mariana Trench

Z GUO, Y HU, Q DU, Y LIU, G QIN… - Acta Geologica Sinica … - Wiley Online Library
Iddingsitization is an aqueous alteration that is known to take place in meteorites and
continental basalts providing a potential habitat for microbial life. However, little is known …