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Subject
- Geology, Stratigraphic7
- Geology4
- Paleontology3
- Altitude, Influence of2
- Artesian wells2
- Groundwater2
- Paleobotany2
- Temperature lapse rate2
- Volcanic ash, tuff, etc2
- Water-supply2
- Aquifers1
- Beetles, Fossil1
- Foraminifera, Fossil1
- Geochronometry1
- Igneous rocks1
- Mammals, Fossil1
- Primates1
- Primates, Fossil1
- Radioactive dating1
- Stratigraphic correlation1