2026-07-28T04:18:43Z
https://icatplus.esrf.fr/oaipmh/request
oai:icatplus.esrf.fr:inv/962082942
2022-11-25T07:00:17.435Z
4.2
EI
10.15151/ESRF-ES-962082942
Edgar Eduardo VILLALOBOS PORTILLO
Edgar Eduardo
Villalobos Portillo
0000-0003-4344-4181
Laurence LEMELLE
Laurence
Lemelle
Laurence LEMELLE
Laurence
Lemelle
Alexandre SIMIONOVICI
Alexandre
Simionovici
0000-0001-5349-6482
Lara MALDANIS CERQUEIRA PERES
Lara
Maldanis Cerqueira Peres
Lara MALDANIS CERQUEIRA PERES
Lara
Maldanis Cerqueira Peres
Alexandre SIMIONOVICI
Alexandre
Simionovici
0000-0001-5349-6482
Deciphering the metabolism of exceptionally preserved 2 Ga old microfossils from Gabon
Example Institute
2025
Data from large facility measurement
2022-11-22T07:00:00Z/2022-11-25T07:00:00Z
2022-11-25T07:00:00Z
I
CC-BY-4.0
This experiment searches for indications of the metabolic pathways, displayed by the trace metal contents, of exceptionally well-preserved 2 Ga old filamentous microfossils from Gabon. Trace metals will be quantified from nano-XRF images of both longitudinal and transverse FIB sections of the filaments (ES-1167 6 shifts @ ID16B in April 2022). Our present request is a new XANES measurement of 6 shifts on ID21 at Sulphur K-edge (E≈2.5 keV) to complete the important step of demonstrating that Ni is linked to organic compounds. This study will form the basis for comparison with the oldest microfossils that utilize methane metabolism and will evaluate novel metabolism emergence, associated with the Great Oxygenation Event (GOE).