Fig. 1: Petrological context and microspectroscopic characterisation of Mosquito Creek Formation microbial mats. | Nature Communications

Fig. 1: Petrological context and microspectroscopic characterisation of Mosquito Creek Formation microbial mats.

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

Fig. 1

Optical photomicrographs showing organic-rich microbial mat horizons (dark layers) within fine–coarse poorly–moderately sorted arkose. The following microbial mat microstructures are annotated: U = undulatory laminations; M = microbial mat mantling underlying sedimentary layers; P = entrained particles; B = bifurcation and anastomosis of microbial laminations; and R = roll-up. Red box in A denotes region detailed in D; red box in B denotes region detailed in G; red box in C denotes region detailed in E. Samples shown: A, D) 21b; B, G) 26 d; C, E) 28c; F) 21a; H) 21c.

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