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Teaching Stratigraphy

Stratigraphy - Layers of Time in the Earth
This science lesson introduces students to the concept of stratigraphy as a historical and geologic process and helps explain soil formation and the impact of floods on a watershed. The lesson is based on the deeply stratified Richard Beene site on the Medina River near San Antonio. Suggested for grades 11 and 12 but suitable also for lower grades.
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