Hydrograph at conduit vs diuse site response at

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Unformatted text preview: What might control this orienta@on? (hint: two part answer) Bexar County, Texas Part 1 – Structural orienta@on Part 2 - weathering Which will weather faster? image  2Corner P hoto dge joints lat ith labels 1b - b. E of c. F wface a. granite Part 2 – solu@onal weathering is enhanced along joints/fractures Speleo – caves them - thing Speleothems – them things that grow in caves (i.e., cave mineral deposits) Type of cave forma@ons Ideal stalagmites Boch et al. (2011) Variable vs. constant growth axis Cruz et al. (2006) How do speleothems reflect climate? what proxy is used to interpret past climate? How does a speleothem form? •  Water (rain) •  Transport of dissolved calcite (CaCO3) into the cave •  Precipita@on of calcite in the cave Speleothem forma@on 1. Water dissolves CO2 2. Carbonic acid dissolves limestone bedrock 3. Dissolved calcite is re- precipitated in the cave What controls the amount of speleothem grow? Water supply (drip rate) is control on speleothem growth What controls water supply (drip rate)? •  Rainfall –  Amount of infiltra@on •  Flow path –  Conduit –  Diffuse Diffuse flow Conduit flow Groundwater flow velocity of: cm/day km/day After Mahler (2004) km/day cm/day What would a hydrograph look like at a conduit site? Hydrograph – @me series of water flow What would a hydrograph look like at a diffuse site? Hydrograph at conduit vs. diffuse site Response at conduit vs....
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