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These lava flows are Cenozoic in age, and some of them spill into the canyon.
The walls of the canyon are mostly cut into horizontal rock layers of Paleozoic age (green in Figure 1, above).
Scientists are optimistic about the techniques as a means to combat fraud in rare foods and beverages.
Even young-earth creationists would agree with this relative sequencing of events.
At the GSA meeting, Austin discussed the inheritance of a mantle age.