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Premium member Presentation Transcript LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous - Tertiary LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding) LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding Southern Rockies - folds and volcanism) LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding Southern Rockies - folds and volcanism Central Rockies - (Wyoming, Colorado) faults) LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? Change in angle of subduction of Farallon Plate? (45 degrees to 10 degrees?) LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? Change in angle of subduction of Farallon Plate? (45 degrees to 10 degrees?) 'Tightening up' of new land accreted in Mesozoic? LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny major uplifts ended by Oligocene LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny major uplifts ended by Oligocene minor uplifts to Pleistocene LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. Jurassic - Sundance Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. Jurassic - Sundance Fm. Cretaceous - Pierre Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. Triassic - Spearfish Fm. Jurassic - Sundance Fm. Cretaceous - Pierre Fm. Oligocene - White River Gp. LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous sea driven eastward by sediments from west LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous sea driven eastward by sediments from west Hell Creek (ss) - terrestrial Fox Hills (ss) - marine Pierre Shale - marine LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs some deposits 100 km wide LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs some deposits 100 km wide most Wyoming coal deposits Cretaceous and Paleocene LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota usually andlt; 1 m thick, but some up to 8m LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota usually andlt; 1 m thick, but some up to 8m partial decomposition of ash produces bentonite which swells when wet LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains - (Pliocene-Miocene) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt Cascades - Andean type uplift (Pliocene to recent) - (Lassen, Shasta, Rainier, St. Helens) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt Cascades - Andean type uplift (Pliocene to recent) - (Lassen, Shasta, Rainier, St. Helens) Sierras - Nevadan Orogeny (Jurassic) and again in Pliocene- Pleistocene You do not have the permission to view this presentation. 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26 Laramide Malbern Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 398 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: August 26, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous - Tertiary LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding) LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding Southern Rockies - folds and volcanism) LARAMIDE OROGENY: LARAMIDE OROGENY Part of Cordilleran Orogeny (Northern Rockies - mostly thrust faulting and folding Southern Rockies - folds and volcanism Central Rockies - (Wyoming, Colorado) faults) LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? Change in angle of subduction of Farallon Plate? (45 degrees to 10 degrees?) LARAMIDE OROGENY: LARAMIDE OROGENY Causes of Laramide Orogeny? Change in angle of convergence of Farallon Plate? Increase in rate of subduction of Farallon Plate? Change in angle of subduction of Farallon Plate? (45 degrees to 10 degrees?) 'Tightening up' of new land accreted in Mesozoic? LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny major uplifts ended by Oligocene LARAMIDE OROGENY: LARAMIDE OROGENY Includes the Black Hills dome - an uplift or anticline which is circular or elliptical in outline some rock in the Black Hills is old 2.5-2.6 by - Nemo 1.6-1.75 by - Harney Peak area major uplift with Laramide Orogeny major uplifts ended by Oligocene minor uplifts to Pleistocene LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. Jurassic - Sundance Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. - Spearfish Canyon Triassic - Spearfish Fm. Jurassic - Sundance Fm. Cretaceous - Pierre Fm. LARAMIDE OROGENY: LARAMIDE OROGENY Major Black Hills Geologic Units Cambrian - Deadwood Fm. Mississippian - Pahasapa Fm. Triassic - Spearfish Fm. Jurassic - Sundance Fm. Cretaceous - Pierre Fm. Oligocene - White River Gp. LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous sea driven eastward by sediments from west LARAMIDE OROGENY: LARAMIDE OROGENY Cretaceous sea driven eastward by sediments from west Hell Creek (ss) - terrestrial Fox Hills (ss) - marine Pierre Shale - marine LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs some deposits 100 km wide LARAMIDE OROGENY: LARAMIDE OROGENY Sediment accumulation along western shore of Cretaceous Sea thick vegetation in coastal marshes, along deltas, and behind barrier reefs some deposits 100 km wide most Wyoming coal deposits Cretaceous and Paleocene LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota usually andlt; 1 m thick, but some up to 8m LARAMIDE OROGENY: LARAMIDE OROGENY Bentonites and volcanism some volcanism in Idaho and Wyoming produced large volumes of ash (Cenozoic) deposits of ash in Montana, Wyoming, South Dakota usually andlt; 1 m thick, but some up to 8m partial decomposition of ash produces bentonite which swells when wet LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains - (Pliocene-Miocene) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic (Tetons in Miocene, Arizona 1200 y) Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic Erosion rapidly filling basins in western North America Colorado Plateau - uplifted sediments surrounded by mountains Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt Cascades - Andean type uplift (Pliocene to recent) - (Lassen, Shasta, Rainier, St. Helens) LARAMIDE OROGENY: LARAMIDE OROGENY Laramide continued during Cenozoic Columbia Plateau - (Miocene - Pleistocene) Washington and Oregon 200,000 cubic km of basalt Cascades - Andean type uplift (Pliocene to recent) - (Lassen, Shasta, Rainier, St. Helens) Sierras - Nevadan Orogeny (Jurassic) and again in Pliocene- Pleistocene