Graham Eaton / A PDC (polycrystalline diamond compact) type oil field drill bit on one othe Kimmeridge ledges. Kimmeridge Bay, Dorset, UK, March. The ledges are hard Jurassic age, carbonate rich horizons of Limetone...
01572797
Graham Eaton / Exposure of Kimmeridge claystone, a hydrocarbon source rock. Rock with multi direction minor jointing and thin bedding, Kimmeridge, Dorset, England, UK.