Across
- 3. A concentrated accumulation of minerals from which they can be extracted
- 5. The physical removal of rock fragments from a landscape
- 8. The average concentration of an element in Earth's Crust
- 9. The underlying of rock material from which the inorganic components of a soil are derived
- 13. The breakdown of rocks and minerals by chemical reactions
- 15. The proportion of soil bases to soil acids, expressed as a percentage
- 17. The loss of some/all of a soil's ability to support plant growth
- 18. Mining techniques used when the desired resource is more than 328 feet below the surface
Down
- 1. A horizontal layer in a soil defined by features such as texture/color
- 2. The mechanical breakdown of rocks and minerals
- 4. Precipitation high in sulfuric acid and nitric acid
- 6. The ability of a particular soil to adsorb and release cations
- 7. The removal of strips of soil and rock to expose ore
- 10. Unwanted waste material creating during mining including mineral and other residues
- 11. The process of looking for minerals and metals in river sediments
- 12. An element with properties that allow it to conduct electricity and heat energy
- 14. The known quantity of a resource that can be economically recovered
- 16. The most fully decomposed organic matter in the lowest section of the O horizon