As an example, Baumgardner points to the Cardenes [ sic ] basalt, a Precambrian volcanic rock found in the Grand Canyon&acute;
(Baumgardner; points; to the Cardenes) (a Precambrian volcanic rock; found; L:in the Grand Canyon&acute)
Baumgardner a Precambrian volcanic rock
points found
to the Cardenes
L:in the Grand Canyon&acute