braided rivers - university of wyominggeoweb.uwyo.edu/geol2100/lecture09_environmentrivers.pdf ·...

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Braided Rivers

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Page 1: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Braided Rivers

Page 2: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Deposits From Braided Rivers

Page 3: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Flood Plain & Valley

Page 4: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

A

B

A B

Meandering Rivers

Flow in a meander bend

Page 5: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Stress in a meander bend Grain size in a meander bend

High

High

Low

Low

Larger

Finer

Finer

Page 6: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Point Bar Strata

Page 7: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Point Bar Strata

Page 8: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Ancient Floodplains & Soils

Page 9: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Ancient Channel Fill

Page 10: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Stacked Channel Sands & Floodplain Muds

Page 11: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Lowland Rivers

Page 12: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river
Page 13: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river
Page 14: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river
Page 15: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Architecture of a channel-fill

Page 16: Braided Rivers - University of Wyominggeoweb.uwyo.edu/geol2100/Lecture09_EnvironmentRivers.pdf · Toutie River, WA, gravelly braided stream- Individual channels within a braided river

Organization of strata from an avulsing river