Jamie,

I have had two additional age tests performed. They came back 27.9 and 49.0 ma. I have determined that there are actually two kinds of lava, the 13ma gray, and the 49.0 red rock. The elemental oxides that are labeled rock would represent the gray rock while the values labeled "red" would represent some mixing of the red and the gray rock.

Here is a picture of each type.