Paleogeography of North America

From 560 Milliopn Years Ago to Today

Images by:

Dr. Ron Blakey

Professor of Geology

Northern Arizona University

http://jan.ucc.nau.edu/~rcb7/RCB.html(All images © Ron Blakey)

Images incorporated into

Powerpoint by Steve Perrin

http://www-personal.umich.edu/~sperrin/gallery.html

With additional graphics by Mike Haller

North

South Pole

View

560 MaMillion years ago

Late Precambrian 550 Ma (Million Years Ago)

Equator

550 MaMillion years ago

Middle Cambrian 510 Ma

510 Ma

Late Cambrian 500 Ma

Equator

Southern

Hemisphere

500 Ma

Early Ordovician 485 Ma

485 Ma

Middle Ordovician 470 Ma

470 Ma

Late Ordovician 450 Ma

450 Ma

Early Silurian 430 Ma

430 Ma

Late Silurian 420 Ma

420 Ma

Early Devonian 400 Ma

400 Ma

Middle Devonian 385 Ma

Equator

Southern

Hemisphere

385 Ma

370 Ma

Late Devonian360 Ma

360 Ma

370 Ma

Early Mississippian 345 Ma

345 Ma

340 Ma

Late Mississippian 325 Ma

325 Ma

Early Pennsylvanian 315 Ma

315 Ma

Late Pennsylvanian 300 Ma

300 Ma

Early Permian 290 Ma

290 Ma

Middle Permian 275 Ma

275 Ma

280 Ma

Late Permian 260 Ma

260 Ma

Early Triassic 245 Ma

245 Ma

240 Ma

Middle Triassic 230 Ma

230 Ma

Late Triassic 210 Ma

210 Ma

220 Ma

Early Jurassic 195 Ma

195 Ma

200 Ma

Early Jurassic 180 Ma

180 Ma

Middle Jurassic 170 Ma

170 Ma

Late Jurassic 150 Ma

150 Ma

Early Cretaceous 140 Ma

140 Ma

Early Cretaceous 130 Ma

130 Ma

Early Cretaceous 115 Ma

115 Ma

120 Ma

Late Cretaceous 100 Ma

100 Ma

105 Ma

Late Cretaceous 85 Ma

85 Ma

90 Ma

Late Cretaceous 75 Ma

75 Ma

Cretaceous-Tertiary 65 Ma

65 Ma

Paleogene Paleocene 60 Ma

60 Ma

Paleogene Eocene 50 Ma

50 Ma

Paleogene Eocene 40 Ma

40 Ma

35 Ma

Paleogene Oligocene 25 Ma

25 Ma

20 Ma

Neogene Miocene 15 Ma

15 Ma

Neogene Miocene 8 Ma

8 Ma

Neogene Pliocene 3 Ma

3 Ma

Quaternary Glacial 126,000 Years Ago

.125 Ma

Present

Today

Description