Perforator Pleistocene, Late Palaeolithic (Alleröd - Younger Dryas, GI-1a - GS-1)
Chert : 2D documentation Jurassic/Cretaceous from Miocene sediments
Chert : 3D documentation Jurassic/Cretaceous from Miocene sediments
Scandynavian Senonian Flint : 3D documentation Maastrichtian
Scandynavian Senonian Flint : 2D documentation Maastrichtian