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Showing results for tags 'breaking open rock'.
So I'm aiming to visit some of the Altamira Shale (Monterey Formation Shale) exposures in my city and try to find some fossils in fallen shale pieces. However, I simply cannot find a good way to split shale (I also have small rocks of Altamira Shale in my backyard, which could be seen as a sort of "practice"). The shale that I get are usually very hard and compact, as seems to not crack very easily with the materials I have. I don't have a real chisel, but I makeshift them (nail, screws, and screwdrivers). When I use them, it seems to just dig a hole in the area where I'm striking at and creat