Download - Chapter 11 Origin and Ages of Lakes
![Page 1: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/1.jpg)
Chapter 11Origin and Ages of Lakes
• Glacial• Tectonic• Volcanic• Riverine• Coastal• Solution• Reservoir
![Page 2: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/2.jpg)
![Page 3: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/3.jpg)
![Page 4: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/4.jpg)
![Page 5: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/5.jpg)
http://www.eeescience.utoledo.edu/Faculty/Gottgens/webpapers/Gottgens%20et%20al.%20WASP%201998.pdf
![Page 6: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/6.jpg)
Glacial lakes
• Developed by an ice barrier– proglacial lakes)
• Developed by glacial erosion– Cirque and paternoster lakes,
fjords, and kettle or pothole lakes• Developed by glacial deposition
(moraines)• Developed by a mixture of
glacial activity
![Page 7: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/7.jpg)
Summit Lake, Alaska
Cirque Lakes
Lake Seal, Tasmania
![Page 8: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/8.jpg)
Paternoster lakes(Glacier National Park)
![Page 9: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/9.jpg)
Fjords (Norway)
![Page 10: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/10.jpg)
Kettle lakes (ex Dundee WI) formed when block of trapped glacial ice in accumulated till melted.
Plunge-pool lakes formed at the base of a waterfalls off retreating glaciers. melt water
![Page 11: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/11.jpg)
Space-shuttle photograph of the Finger Lake district in western New York.http://www.geospectra.net/kite/ny_finger/finger.htm
Morainal damming formed the Finger Lakes, Lake Mendota (& many WI lakes)
![Page 12: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/12.jpg)
Glacial Lakes
![Page 13: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/13.jpg)
![Page 14: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/14.jpg)
![Page 15: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/15.jpg)
Polygon ponds, Arctic region (see book Fig. 11.18).
![Page 16: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/16.jpg)
Lake Baikal• Max depth 1,620 m• Length: 636 km• Width: 80 km• Shoreline length: 2,100 km• Volume: 23,600 km3 (almost 20% of the world’s surface fresh water, more than all five Great Lakes combined)
Tectonic Lakes (formed by deep earth crustal movements)
![Page 17: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/17.jpg)
Lake Tanganyika
Graben lakes: multiple faults (see book Fig 11.19)
![Page 18: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/18.jpg)
Rifting A geologic term that describes the process that occurs when land sinks between two parallel faults.
![Page 19: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/19.jpg)
Lake ChadDepth: 2-3 mWatershed:lake = 604:1
African rift lakes
![Page 20: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/20.jpg)
Lake Chad, which once straddled the borders of Chad, Niger, Nigeria and Cameroon, has shrunk by an estimated 95% since the mid 1960s, due to the growth of agriculture and declining rainfall. Image: Unep
![Page 21: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/21.jpg)
Volcanic crater Lakes
![Page 22: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/22.jpg)
(See also book Fig 11.20)
![Page 23: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/23.jpg)
Riverine (or fluvial) lakes
![Page 24: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/24.jpg)
Riverine lakes (book Fig 11.17): Dominant lake type at low latitudesOxbow, blocked-valley, floodplain lakes (varzea)
River meander becomes separated Oxbow lakes (billabong)
http://www.lmic.state.mn.us/gifs/wilkin_oxbow.jpg
![Page 25: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/25.jpg)
Lakes with other origins
• Coastal lakes
• Solution (karst) lakes
• Reservoirs
![Page 26: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/26.jpg)
![Page 27: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/27.jpg)
Wintergarden, Florida
![Page 28: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/28.jpg)
“Gator Lake”, Florida Everglades (1989)
![Page 29: Chapter 11 Origin and Ages of Lakes](https://reader031.vdocuments.net/reader031/viewer/2022012919/56814c1a550346895db91b22/html5/thumbnails/29.jpg)
Reservoirs