GC8RN4V- #2 PR3-MAC - SOS2 - MEIOS TERRESTRES
In this place you can see carbon black shales (if you take them in your hands they turn black and silky), but with very low thickness.
It contains abundant organic matter and fossils, especially graptolites and some molluscs, besides sulphides.
The presence of graptolites stands out, which are typical Paleozoic colonial organisms, which have since been extinct.
It is often possible to find the genus monograptus, which is easily identifiable by its saw blade shape.