Across
- 2. The underlying rock material from which the inorganic components of a soil are derived
- 5. A mining technique in which the entire top of a mountain is removed with explosives
- 7. Biggest Horizon
- 8. The average concentration of an element in earths crust
- 11. dark organic material that forms in soil when plant and animal matter decays
- 14. Process of looking for minerals, metals, in river sediments
- 16. A mining technique that creates large visible pit in the ground
- 17. The breakdown of rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks or both
- 18. Between A and O
- 19. smallest horizon
- 22. In resource management, the known quantity of a resource that can be economically recovered
- 23. high in sulfuric acid and nitric acid from reactions between water vapor and sulfur and nitrogen oxides in the atmosphere
- 24. Unwanted waste material created during mining
- 25. The loss of some or all of the soils ability to support plant growth
Down
- 1. Transport of weathered rock fragments by wind and rain
- 3. Mining techniques used when minerals are 328 ft below the surface
- 4. The ability of a particular soil to absorb and release cations
- 6. The proportion of soil bases to soil acids
- 9. The removal of strips of soil and rock to expose ore
- 10. Last horizon
- 12. The Mechanical breakdown of rocks and minerals
- 13. a material, typically an element or alloy, that is hard, strong, and lustrous, and is a good conductor of heat and electricity
- 15. Soil layers with different characteristics
- 20. a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted
- 21. Second horizon