Across
- 2. zone of leaching or elevation found in some acidic soils under the o horizon
- 5. the process of looking for minerals, metals, and precious stones in river sediments
- 7. the ability of a particular soil to absorb and release cations
- 10. composed of primarily mineral material with little organic matter
- 13. the removal of strips of soil and rock to expose ore
- 14. the loss of some or all of a soils abilities to support plant growth
- 16. a concentrated accumulation of minerals from which economically valuable materials can be extracted
- 17. the known quantity of a resource that can be economically recovered
- 19. the breakdown of rocks and minerals by chemical reactions and/or the dissolving of chemical elements from rocks
- 20. used when the desired resource is more than 100 m below the surface
- 24. defined by distinctive physical features
- 25. the proportion of soil bases ti soil acids
Down
- 1. a mining technique that creates a large visible pit or hole in the ground
- 3. a mining technique in which the entire top of a mountain is removed with explosives
- 4. The average concentration of an element in earths crust
- 6. high in sulfuric acid and nitric acid from reactions between water vapor and sulfur and nitrogen oxides in the atmosphere, also known as acid rain
- 8. unwanted waste material created during mining including mineral and other residues that are left behind
- 9. zone of organic material and minerals that have been mixed together
- 11. the underlying rock material from which the inorganic components of a soil are derived
- 12. an element with properties that allow it to conduct electricity and heat energy
- 15. the physical removal of rock fragments from a landscape or ecosystem
- 18. the mechanical breakdown of rocks and minerals
- 21. the organic horizon at the surface of many soils
- 22. the most fully decomposed organic matter in the lowest section of the o horizon
- 23. the least weathered soil horizon