Probable Fungal Colonization and Carbonate Diagenesis of Neoproterozoic Stromatolites from South Gabon, Western Congo Basin - Geology and Resource Potential of the Congo Basin - page 77

Fig. 5.2 Stratigraphy (column
1), lithology and sedimentary
structures (column 2), position of
sedimentological samples
(column 3), position of samples
illustrated on plates 1 and
2 (column 4) and lithological
curve of the microfacies (column
5) of the Mouila quarry (Pr´at
et al. 2010 ). The arrows inside
column 5 indicate regressive
shallowing-upward metric
sequences (A-F), from shallow
subtidal (microfacies 1 and 2) to
supratidal and sabkha
environments (microfacies 3-5).
Samples 19 and 26 contain partly
preserved cyanobacteria in the
dolomicritic matrix (Fig. 5.4a )
and well-preserved fungal hyphae
in small-sized pits (Fig. 5.4b-d ).
The matrix of samples 22 and 23
is strongly replaced by
homogeneous dolomicrosparitic
crystals. See text for explanations
and Fig. 5.3g, h