Across
- 1. average concentration of a element in earths crust
- 4. breakdown of rocks by chemical reactions, and chemical elements from rocks, and minerals
- 7. least weathered soil horizon, that always occurs beneath B Horizon and is similar to parent material
- 8. mostly decomposed matter in lowest section of the O Horizon
- 11. frequently top layer of soil, a zone of organic material and minerals that were mixed together
- 12. accumulation of minerals from economically valuable
- 15. mechanical breakdown of rocks
- 21. Loss of some or all soils ability to support plant growth
- 22. precipitation of high sulfuric acid and nitric acid
- 23. zone of leaching or eluviation in some acidic soils
- 24. the process of looking for minerals, metals, and precious stones.
Down
- 2. Soil horizon composed primarly of mineral material with very little orgainic matter
- 3. resource management, a known quantity of a resource that can be recovered
- 5. horizontal layer of soil defined by distinctive physical features like texture and color
- 6. Mining technique used when the desired resource is below 328 feet.
- 9. a technique that removes the entire top of a mountain with explosives.
- 10. Proportion of soil acids, expressed as a precentage
- 12. A mining technique that creates a large visible hole.
- 13. underlying rock material from which inorganic components of the soil are derived
- 14. the removal of strips of soil and rock to expose ore
- 16. physical removal of rock fragments from landscape or ecosystem
- 17. element with properties that allow it to conduct electricity and heat
- 18. organic horizon at the surface of many soils composed of organic detritus in various stages of decomposing
- 19. Unwanted waste created during mining including minerals and other residues left behind after mining.
- 20. ability of a particular to absorb and release cations