Weathering, Erosion, and Deposition

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Across
  1. 3. the average concentration of an element in Earth's crust
  2. 6. a mining technique in which the entire top of a mountain is removed with explosives
  3. 7. mining techniques used when the desired recourse is more than 100 m below the surface of the Earth
  4. 8. a soil horizon composed primarily of mineral material with very little organic matter
  5. 9. the physical removal of rock fragments from a landscape or ecosystem
  6. 10. a concentrated accumulation of minerals from which economically valuable materials can be extracted
  7. 13. the mechanical breakdown of rocks and minerals
  8. 14. the process of looking for minerals metals and precious stones in river sediments
  9. 17. unwanted waste material created during mining including mineral and other residues that are left behind after the desired metal or ore is removed
  10. 18. a zone of leaching, or eluviation, found in some acidic soils under the O horizon or, less often, the A horizon
  11. 19. the ability of a particular soil to absorb and release cations
  12. 22. frequently the top layer of a soil, a zone of organic material and materials that have been mixed together
  13. 24. the organic horizon at the surface of many soils, composed of organic detritus in various stages of decomposition
  14. 25. the removal of strips of soil and rock to expose ore
Down
  1. 1. a mining technique that creates a large visible pit or hole in the ground
  2. 2. in recourse management, the known quantity of a resource that can be economically recovered
  3. 4. the underlying rock material from which the inorganic components of a soil are derived
  4. 5. the loss of some or all of a soils ability to support plant growth
  5. 11. the proportion of soil bases to soil acids, expressed as a percentage
  6. 12. an element with properties that allow it to conduct electricity and heat energy, and to perform other important functions
  7. 15. precipitation high in sulfuric acid and nitric acid from reactions between water vapor and sulfur and nitrogen oxides in the atmosphere
  8. 16. the breakdown of rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks or both
  9. 20. the least weathered soil horizon, which always occurs beneath the B horizon and is similar to the parent material
  10. 21. a horizontal layer in a soil defined by distinctive physical features such as texture and color
  11. 23. the most fully decomposed organic matter in the lowest section of the O horizon