As an example, Baumgardner points to the Cardenes basalt, a Precambrian volcanic rock found in the Grand Canyon's inner gorge.
(Baumgardner; points; to the Cardenes basalt) (a Precambrian volcanic rock; found; L:in the Grand Canyon's inner gorge)
Baumgardner a Precambrian volcanic rock
points found
to the Cardenes basalt
L:in the Grand Canyon's inner gorge