Middle Devonian (370 Ma) Antler arc collides with long-lived North American passive margin

OVERVIEW OF GEOLOGIC EVENTS  (chronostratigraphy after Gradstein et al., 2004)

All directions given relative to present coordinates; in general, events listed by period from east to west

Late Proterozoic (600 - 542 Ma)

 

Cambrian (542 - 488 Ma)

Ordovician (488 - 444 Ma

Silurian (444 - 416 Ma)

Devonian (416 - 359 Ma)

Mississippian (359 - 318 Ma) 

Pennsylvanian (318 - 299 Ma )

Permian (299 – 251 Ma)

Triassic (251 - 200 Ma) 

Jurassic (200 - 146 Ma)

Cretaceous (146 - 65 Ma)

   Early

   Late

Paleogene (65 – 23 Ma)

Neogene (23 – 0 Ma)