Fluvial landforms: piedmont zone REVIEW

2. Fluvial landforms: piedmont zone REVIEW x x x x x alluvial fan playa or floodplain x x x x x x x x mountain front x x x x x x x pediment (transport surface) x x x x x x x x x x x alluvial fill x x x x x x x x x x x x x x x x piedmont angle x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x piedmont x

3. Floods • Extending R.I. to include paleofloods • Look at sediment record in floodplain deposits • Look at tributary alluvial fans • Look at tree damage • Look at tree age • Look at boulder size • Look at lichen size • Look at rock coatings • Look for erosion in glacial depositional features

4. Colorado physiography Physiography defined Colorado physiography> Intermountain basins > Mountain ranges / large dissected plateaus > High peaks (13K +) > Plateaus and mesas > Canyons and rivers

5. Physiography: Definition Q: How are these regions defined or classified? A: Through similar patternsor characteristics in:geology and / ortopographicelements: landforms, drainages, soils, climate, vegetation… http://water.usgs.gov/nawqa/pnsp/pubs/wrir984245/fig14.gif

6. CO Physiographic Regions http://geosurvey.state.co.us/Default.aspx?tabid=131

7. Intermountain Basins See slide notes for more info. re: 4 Colo. parks

8. Intermountain Basins • North Park Walden, CO http://www.flickr.com/

9. Intermountain Basins • Middle Park

10. Intermountain Basins • Middle Park

11. Intermountain Basins • South Park

12. Intermountain Basins • South Park

13. Intermountain Basins • San Luis Valley http://pubs.usgs.gov/of/2007/1193/pdf/OF07-1193_ChG.pdf

14. Intermountain Basins • San Luis Valley Image: http://www.colorado-counties.com/san-luis-valley11.jpg

15. Intermountain Basins • San Luis Valley

16. Ranges / Dissected Plateaus www.innovativegis.com/.../Ironing_Colorado.htm

17. http://www.14ers.com/images/ranges2d800x600.jpg

18. Ranges Medicine Bow Sierra Madre Flat Tops Gore Front Range Battlement Mesa 10 Mile &Mosquito Elk Mtns. Sawatch Grand Mesa Wet Mtns. UncompahgrePlateau Sangre de Cristo San Juan Group Background Image from: http://www.14ers.com/images/ranges2d800x600.jpg

19. Uncompahgre Plateau A 2000 mi ^2 mountain!

20. Grand Mesa The largest flat-topped mountain in the world! Both images from: http://geologyhappens.blogspot.com/2010/02/grand-mesa.html

21. Peaks The (~53) 14ers – from 14ers. com

22. Peaks The (~700) 13ers – from 13ers. com

23. Canyons: Black Canyon Pegmatite The 2,300 ft. Painted Wall - NPS/Lisa Lynch

24. Canyons: Royal Gorge Image at right: http://academic.emporia.edu/aberjame/struc_geo/rocky/rocky24.jpgImage at left: http://www.railtravelcenter.com/Colorado_2010.htm

25. Canyons: Picketwire

26. Canyons: Picketwire

27. Rivers

28. Rivers: The Colorado

29. Rivers: The Colorado http://www.johnhaynes.us/rail/mftwest/

30. Rivers: The Colorado Source: http://www.raftingcolorado.com/whitewater/rafting/the-rivers/colorado-river.html Source: http://photosourcewest.wordpress.com/2010/12/30/

31. Rivers: The Colorado

32. CO Physiographic Regions http://geosurvey.state.co.us/Default.aspx?tabid=131

33. CO Physiographic Regions 1 2 5 3 4 6 http://geosurvey.state.co.us/Default.aspx?tabid=131

34. Lab Four .kmz demo