Geochemical exploration techniques for metals
- Created by: Brad_ers_B
- Created on: 27-04-15 12:39
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- Geochemical exploration techniques for metals
- Steam sediment survey
- Stream sediment downstream of the source will have anomalous metal values
- Stream sediment upstram of the source will have normal metal values
- The size of the anomaly decreases downstream from dilution by surface water run off and sediment entering the river downsteam
- Catastrophic dilution occurs where tributaries meet
- Soil survey
- Used for local follow up surveys in target areas where theres lack of outcrop
- Taken using a systemic grid sampling strategy
- Samples on top and down slope of the source will have anomalous values
- Samples up slopes of the source will have a normal metal value
- Involves collecting samples to analyse and find anomalies
- Relies on the metals in ores undergo dispersion by weathering, erosion and transportation
- Gives a good idea of how particular metals travel round the surface in the rock cycle
- Samples of rock, soil, stream sediment, drill core, water and even vegetation or atmospheric gasses
- Steam sediment survey
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