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Erosion, Weathering and Regolith Development Cliﬀ Riebe, Jesse Hahm, Heather Rogers & Steve Holbrook

Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

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Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers & Steve Holbrook. Altitudinal variations in vegetation. Alpine slopes. Lake Tahoe. Sierra. Nevada. Dense conifer forests. San Francisco. Mountains. 85 km. Fresno. Las Vegas. Oak woodlands. - PowerPoint PPT Presentation

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Page 1: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

Erosion, Weathering and Regolith Development

Cliff Riebe, Jesse Hahm,

Heather Rogers &Steve Holbrook

Page 2: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

San Francisco

Lake Tahoe

Pacific Ocean

85 km

LasVegas

SierraNevada

Mountains

Alpine slopes

Dense conifer forests

Oak woodlandsFresno

Altitudinal variations in vegetation

Page 3: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

Southern Sierra CZOcatchments

Bald Mountain

However, altitudinal variations in climate do not explain everything!

Page 4: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

What controls the presence/absence and thickness of regolith?

Holbrook et al.in revision

Important for understanding:– water cycle• soil-water storage• timing & amount of melt runoff

– pedogenesis– weathering, erosion and landscape evolution

Page 5: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

Influence of geology on vegetation:Bulk geochemistry, including bedrock P

Page 6: Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &

Influence of geology on vegetation:

Mineralogy?

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