Erosion, Weathering and R egolith Development Cliff Riebe, Jesse Hahm , Heather Rogers &
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Transcript of 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
San Francisco
Lake Tahoe
Pacific Ocean
85 km
LasVegas
SierraNevada
Mountains
Alpine slopes
Dense conifer forests
Oak woodlandsFresno
Altitudinal variations in vegetation
Southern Sierra CZOcatchments
Bald Mountain
However, altitudinal variations in climate do not explain everything!
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
Influence of geology on vegetation:Bulk geochemistry, including bedrock P
Influence of geology on vegetation:
Mineralogy?