BURIN EDGE SHEARING FRACTURES
Both of these early projectile points have similar types of impact damage. The Dalton point is missing the tip of its point from a cleanly snapped bend-break type of impact fracture. A shearing fracture also caused a burin type of flake removal on one edge. It's apparent that the Clovis point was damage in some way and an attempt to resharpen it was made. It was probably deliberately discarded on the camp site where it was found and replaced with a newer point. One of the edges has a long burin type fracture that is a good indication that this point may have received its damage from impacting something hard---possibly the bone of an Ice Age animal.