Roadside Geology of Oregon

Learn about the Geology of Oregon with maps, photos and expert descriptions! This 6"x9" paperback has 386 pages that are packed with detailed information about Oregon Geology. See table of contents below.

Roadside Geology of OregonTable of Contents

Geologic Map of Oregonvi
Oregon's Geologic History1
Plate Tectonics and the Pacific Northwest1
Earthquakes and Faults6
Volcanic Activity8
Paleozoic Era11
Mesozoic Era13
Cenozoic Era17
Siletz River Volcanics and Tyee Formation17
Clarno and John Day Formations and the Western Cascades20
Columbia River Basalt Group and Uplift of the Coast Range22
Basin and Range25
High Cascades26
Glaciation and the Missoula Floods27
Oregon's Modern Climate and Waterways32
Coast Range35
Formation of the Coast Range35
The Oregon Coast40
The Willamette Valley48
Guides to the Coast Range51
Interstate 5: Portland - Eugene54
Skinner and Spencer Buttes59
Interstate 5: Eugene - Roseburg61
Detour to Folded Umpqua Group63
US 20: Corvallis - Newport64
Marys Peak66
US 26: Portland - Seaside67
Saddle Mountain State Natural Park70
US 30: Portland - Astoria72
US 101: Astoria - Lincoln City74
Ecola State Park77
US 101: Lincoln City - Bandon81
Devils Punchbowl84
Cape Arago89
OR 6: US 26 - US 10193
OR 18: Tualatin - US 10196
Erratic Rock State Natural Site97
OR 22: Salem - US 10198
OR 38: I-5 - Reedsport99
OR 42: Roseburg - Coos Bay102
OR 126: Eugene - Florance106
Cascade Range111
The High Cascaades113
The Western Cascades115
Guides to the Cascade Range117
Interstate 84: Portland - The Dalles117
US 26: Portland - Madras126
Mt. Hood128
US 20: Albany - Bend132
Sisters to Redmond on OR 126136
US 22: Salem - Santiam Junction138
Silver Falls State Park140
OR 58: Eugene - US 97143
OR 62: Medford - Crater Lake - US 97149
OR 230 to Diamond Lake152
OR 66: Ashland - Klamath Falls154
OR 140: Medford - Klamath Falls158
OR 126: Eugene - US 20160
OR 138: Roseburg - US 97164
OR 242: McKenzie Bridge - Sisters169
Crater Lake National Park171
The Pinnacles178
Klamath Mountains181
Accreted Terraces184
Klamaths after Accretion188
Guides to the Klamath Mountains189
Interstate 5: Roseburg - California Border189
US 101: Bandon - California Border197
Cape Blanco200
US 199: Grants Pass - California Border207
Oregon Caves National Monument210
Lava Plateaus213
Columbia Plateau and the Columbia River Basalt Group213
High Lava Plains217
Owyhee Upland219
Guides to the Lava Plateaus219
Interstate 84: The Dalles - Pendleton219
US 20: Bend - Burns222
US 20: Burns - Ontario226
US 95: Idaho Border - Nevada Border233
Leslie Gulch - Succor Creek Byway235
WS 97: Biggs Junction - Bend - La Pine237
The Cove Palisades State Park239
Smith Rock State Park243
Newberry Volcano245
US 197: The Dalles - US 97250
US 395: John Day - Burns253
OR 78: Burns - Burns Junction256
Blue Mountains260
Accreted Terraces261
John Day Fossil Beds265
Guides to the Blue Mountains269
Interstate 84: Pendleton - Ontario269
US 26: Madras - John Day273
Painted Hills Unit of John Day Fossil Beds National Monument278
US 26: John Day - Vale281
US 395: Pendleton - Mt. Vernon286
OR 19: Arlington - US 26 at Picture Gorge289
OR 207 to Mitchell292
Sheep Rock Unit of John Day Fossil Beds National Monument294
OR 218: Shaniko - Antelope - Fossil296
Antelope Highway297
Clarno Unit of John Day Fossil Beds National Monument298
OR 82/OR 86/Wallowa Mountain Road: LaGrande - Joseph - Baker City299
Joseph Canyon Viewpoint303
Hat Point306
Hells Canyon309
Basin and Range312
Normal Faulting314
lakes and Basins316
Guides to the Basin and Range319
US 97: La Pine - Klamath Falls - California Border319
US 395: Riley - Lakeview - California Border323
OR 31: La Pine - Valley Falls328
OR 140: Klamath Falls - Lakeview336
OR 205: Burns - Fields - Nevada Border339
Diamond Craters342
Steens Mountain346
Further Reading and References 357