Notched Rocks

Over the last several weekends, looking for arrowheads in the fresh dirt, I have come across several notched rocks. Some, I am not sure are artifacts. Others seem clear. But it is interesting to interpret details.

Here is the nicest"knapp-able" material, smoother on the lower portion:

 Perhaps used on a soft material.

Here is something more like a hammer (pretty when wet)

Look more carefully at the rust stains in both pictures. They suggest contact with organic material.

Here is a pretty rock:

Here is another little one. I have been carrying it around for a month or so, unsure if it is an artifact. It is quite small:

 

It has a little white dot on it. Here is the back side.