Lithic Series, Part 5: Impact Fracture


I’m sure you’ve been just pining to know all about impact fractures and be provided with a somewhat humorous depiction of this occurrence.  So, while surveying, I’ve found a lot of broken projectile points in the field, which are then discarded since they can’t be fashioned into a new point.  Some of the points broke upon impact with the target, still showing how the tool literally fractured into two or more fragments.  Exciting Stuff.

Lithic Series, Part 1: How Flakes Are Made


When a hammerstone and a core fall in love . . .Flint Knapping is the process of using a hammerstone (a small rock/cobble) and hitting it against a type of rock (i.e. a core), like obsidian or chert, that breaks into nice small pieces (i.e. flakes) that can be further worked into tools like scrapers, spear points, projectile points, knives, etc.