This shows that the massive erosion of the Grand Canyon occurred after the Wasatch was laid down, within the last 50 million years.
(the Wasatch; was laid down; T:within the last 50 million years) (This; shows; that the massive erosion of the Grand Canyon occurred) Context(This shows,List([0, 10))):(the massive erosion of the Grand Canyon; occurred; T:after the Wasatch was laid down, within the last 50 million years)
This shows,List([0, 10))
the Wasatch This the massive erosion of the Grand Canyon
was laid down shows occurred
T:within the last 50 million years
that the massive erosion of the Grand Canyon occurred
T:after the Wasatch was laid down, within the last 50 million years