This blog focuses upon stylolites which are structures that either form during burial or by later tectonic movements and have a serrated appearance on rock surfaces.
Carbonates, Fractures
Chicken-wire fractures are common in anhydrite and chalk. This blog looks at some of their key features and provides examples from rock core.
Faults, slickenlines
This blog shows that slickenlines are scratches on the surfaces of shear fractures. The state of stress on a shear fracture can be predicted by Mohr circles.
Fractures, Geothermal
This blog addresses why wettability is important in the recovery of oil from fractured chalks.
There are 2 basic types of natural fractures that need to be studied when characterising naturally fractured reservoirs - whether it be a geothermal or hydrocarbon reservoir. These are extension and shear fractures.
