Page 1
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
Page 2
North
South Pole
View
560 MaMillion years ago
Page 3
Late Precambrian 550 Ma (Million Years Ago)
Equator
550 MaMillion years ago
Page 4
Middle Cambrian 510 Ma
510 Ma
Page 5
Late Cambrian 500 Ma
Equator
Southern
Hemisphere
500 Ma
Page 6
Early Ordovician 485 Ma
485 Ma
Page 7
Middle Ordovician 470 Ma
470 Ma
Page 8
Late Ordovician 450 Ma
450 Ma
Page 9
Early Silurian 430 Ma
430 Ma
Page 10
Late Silurian 420 Ma
420 Ma
Page 11
Early Devonian 400 Ma
400 Ma
Page 12
Middle Devonian 385 Ma
Equator
Southern
Hemisphere
385 Ma
370 Ma
Page 13
Late Devonian360 Ma
360 Ma
370 Ma
Page 14
Early Mississippian 345 Ma
345 Ma
340 Ma
Page 15
Late Mississippian 325 Ma
325 Ma
Page 16
Early Pennsylvanian 315 Ma
315 Ma
Page 17
Late Pennsylvanian 300 Ma
300 Ma
Page 18
Early Permian 290 Ma
290 Ma
Page 19
Middle Permian 275 Ma
275 Ma
280 Ma
Page 20
Late Permian 260 Ma
260 Ma
Page 21
Early Triassic 245 Ma
245 Ma
240 Ma
Page 22
Middle Triassic 230 Ma
230 Ma
Page 23
Late Triassic 210 Ma
210 Ma
220 Ma
Page 24
Early Jurassic 195 Ma
195 Ma
200 Ma
Page 25
Early Jurassic 180 Ma
180 Ma
Page 26
Middle Jurassic 170 Ma
170 Ma
Page 27
Late Jurassic 150 Ma
150 Ma
Page 28
Early Cretaceous 140 Ma
140 Ma
Page 29
Early Cretaceous 130 Ma
130 Ma
Page 30
Early Cretaceous 115 Ma
115 Ma
120 Ma
Page 31
Late Cretaceous 100 Ma
100 Ma
105 Ma
Page 32
Late Cretaceous 85 Ma
85 Ma
90 Ma
Page 33
Late Cretaceous 75 Ma
75 Ma
Page 34
Cretaceous-Tertiary 65 Ma
65 Ma
Page 35
Paleogene Paleocene 60 Ma
60 Ma
Page 36
Paleogene Eocene 50 Ma
50 Ma
Page 37
Paleogene Eocene 40 Ma
40 Ma
35 Ma
Page 38
Paleogene Oligocene 25 Ma
25 Ma
20 Ma
Page 39
Neogene Miocene 15 Ma
15 Ma
Page 40
Neogene Miocene 8 Ma
8 Ma
Page 41
Neogene Pliocene 3 Ma
3 Ma
Page 42
Quaternary Glacial 126,000 Years Ago
.125 Ma