Fig. 7: Preservation of biogeochemical complexity in Mosquito Creek microbial mats. | Nature Communications

Fig. 7: Preservation of biogeochemical complexity in Mosquito Creek microbial mats.

From: Aluminous phyllosilicates promote exceptional nanoscale preservation of biogeochemical heterogeneities in Archaean siliciclastic microbial mats

Fig. 7

Scanning transmission X-ray microscopy (STXM) analyses of organic materials in FIB-milled ultrathin sections. Absorption spectra correspond to the C K-edge (A, sample 21b) and N K-edge (B, sample 28c); spot size 30 nm. See main text for identification of absorption features. C Nanoscale secondary ion mass spectrometry (NanoSIMS) analyses showing the correlation of C and N within microbial mat laminations. Optical image (left) shows microbial mat laminations (white arrows) within a phyllosilicate-dominated matrix (regions indicated as M); amber arrow indicates an entrained mineral particle.

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