Skip to main content
Toggle navigation
UNM A-Z
myUNM
Directory
The University of New Mexico
UNM A-Z
myUNM
Directory
Help
StudentInfo
FastInfo
Trail of Time
Home
Trail of Time
What is it?
How to Walk It
History of the Trail
Events
Project Documents
General and Planning Documents
Design Documents
Evaluation Documents
NPS Documents
Cognition Research Publications
Partners
Virtual Trail of Time
About the Virtual Trail of Time
Grand Canyon Rocks
Portals
Yavapai
Time Zero
Headquarters
Village
Maricopa
Geochapters
It's About Time
Humans
Climate
Eruptions
Grand Canyon Incision
Plateau Uplift
Top Layers
Animal Life
Unconformity
Supergroup
Crust Formation
Oldest Rock
Old Grains
First Life
Birth of Earth
UNM
Home
Virtual Trail of Time
Geochapters
Crust Formation
Crust Formation
Geochapters
It's About Time
Humans
Climate
Eruptions
Grand Canyon Incision
Plateau Uplift
Top Layers
Animal Life
Unconformity
Supergroup
Crust Formation
Oldest Rock
Old Grains
First Life
Birth of Earth
