essential elements for human health ultimate element source is the earth
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Essential elements for human health
Ultimate element source is the Earth
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Dante Scarpelli and John Craighead, 1985
Nature, it seems, has a limited repertoire of strategies and appears to be governed by the same principles at every level of organization.
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Paracelsus, 1538
All substances are poison; it is the dose that differentiates a poison from the remedy
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Geology and Human HealthOverarching Themes: What?
Plumlee and Zeigler, 2003
SOURCES TRANSFORMATION +
TRANSPORTAir
WaterSedimentsBiosphere
EXPOSURE +
HEALTHEFFECTS
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Geogenic sources: mineralogy and geologic setting
Asbestos hand specimen and fiber in lung tissue
Wells with high concentrations of uranium in Michigan’s Upper Peninsula
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Anthropogenic sources
Agricultural activities
Industrial discharges to land, water and air
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Accumulation and transformation in soils and sediment
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Transport in air and water
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Air transport: advection and dispersion
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Water transport
Ground WaterFlow Direction Plume Migration
Dense Nonaqueous Phase Liquid DNAPL
Sediment transport in streams Sediment deposition
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Exposure: In the end, we are what we eat (and drink and breathe)
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Exposure and Risk
Increasing dosage
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Increasing dosage
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Geology and Human HealthOverarching Themes: Who and Where?
• Undergrads, general education courses• Undergrad majors, introductory courses• Undergrad majors, upper level courses• Advanced students, interdisciplinary courses• Adult learners, outreach/extension programs• Others???
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Geology and Human HealthOverarching Themes: How?
• Lectures• Labs• Case studies• Novel interactive exercises• Web based courses and exercises• Other???