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Subject
- Magnetic anomalies19
- Geology18
- Mines and mineral resources9
- Formations (Geology)3
- Engineering geology2
- Groundwater2
- Continental shelf1
- Earthquake intensity1
- Earthquakes1
- Geology, Structural1
- Gravity anomalies1
- Lava1
- Potassium-argon dating1
- Radioactive dating1
- Rocks, Metamorphic1
- Sabinoso Wilderness1
- Sandstone1
- Seismology1
- Volcanic ash, tuff, etc1
- Volcanoes1
