Environmental Geology

2. long-term weather conditions affecting an area
7. horizontal tunnel dug into a hillside
8. where water is injected below or natural gas injected above the oil to maintain pressure
10. impermeable rock that does not transmit water
12. material is scraped or sucked from the river or sea bed.
13. when too little rock is extracted
15. energy extracted from hot subsurface rocks or water
16. height difference between water table and water level in well
17. where tributaries meet and water and sediment from other sources is added.
19. liquids that do not mix
20. red tropical soil made of hydrated iron and aluminium oxides.
21. metalladen solution produced by in situ or heap leaching.
23. insoluble products of chemical weathering
24. rotational downwards and outwards of movement of incompetent rock and material.
25. forms when minerals precipitate into a fracture

1. comprise waste piled up on the ground
3. zone of high grade ore just below the water table formed by secondary enrichment
4. insoluble cap of iron oxides at the surface
5. percentage of carbon in coal
6. releasing water stored behind a dam to turn a turbine to generate electricity
9. is a useful and valuable natural material
11. mining from surface quarries
14. large igneous intrusion below a volcano with a porphyritic texture.
18. uncontrolled oil gush to the surface
22. a geological situation that concentrates petroleum in one place