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50 Cards in this Set

  • Front
  • Back
what mass wasting event often involves movement over a volume of compressed air?
debris avalanche
what mass wasting event is most commonly associated with an earthquake?
4. what mass wasting event is commoner in areas of permafrost?
solifluction which is a type of earthflow
5. what is the slowest moving mass wasting process?
6. after gravity, name a major cause of mass wasting
7. when surveying hillside property on which you plan to build a home, what would you use as evidence of former mass wasting?
tilted gravestones, bent or broken walls, tilted posts
8. which common method is used to stabilize a hillside?
use of drains, build retaining wall where a cut has been made in the slope, hillside can be cut back in a series of terraces rather than a steep slope, vegetation cover, "stitching"
9. what is permafrost?
ground that remains permanently frozen for many years
10. what part of the glacier is commonly associated with abrasion and plucking?
zone of ablation or bedrock
11. what common crust valley profiles are eroded and deepened into canyons and valleys by alpine or valley glaciers?
U shaped valley
12. what depositional feature is composed of till and is only associated with continental glaciations not alpine glaciers?
13. which of these glacial features are typically found in close proximity?
14. what glacial feature forms a depression?
15. which of these only occurs where a glacier enters the sea?
16. after glacier ice has melted, which glacial landform is likely to host a waterfall or steep rapids?
17. which glacial landform is likely to be situated beside a large end moraine?
which moraine is only formed by the merging of two lateral moraines at a junction of two valley glaciers?
medial moraine
19. where are the world's largest ice sheets located today?
Greenland and Antarctica
20. What is the mountain belt that forms the western part of North America called?
North American Cordillera
21. A craton is formed by?
uplift and erosion
22. What is the Precambrian Shield?
a complex of precambrian metamorphic and plutonic rocks exposed over a large area. It represents the roots of mountain ranges that completed the deformation process more than 1 billion yrs ago.
23. What do folds and reverse faults in a mountain belt suggest?
crustal shortening
24. To explain fold and thrust belts, simultaneous normal faulting, and how uplift of once deep-seated metamorphic rocks rise to upper levels of a mountain belt, geologists use____?
25. What does a Wilson Cycle describe?
the cycle of splitting of a supercontinent, opening of an ocean basin, and collision of continents
26. What is the detachment part of the mantle portion of the lithosphere beneeath a mountal called?
27. What forms terranes?
microcontinents, ocean crustal fragments, and fragments of distant continents (all of the above)
28. In which form does the hanging wall move upward over the footwall?
reverse fault
How would you describe stress?
a force acting on a body or rock unit that tends to change the size or shape of that body or rock unit.
30. What is the compass direction of a line formed by the intersection of an entire plane witha horizontal plane called?
31. Which stress configuratio results in the forming of flat line sedimentary strata?
compressive stress
32. In which type of fold do the oldest rocks usually form the axial core?
33. What is anticline?
limbs dip away from the cinter hinge, oldest rocks are in the middle, youngest rocks on the outside
34. What is syncline?
limbs of a syncline dip toward the hing; oldest rocks on outside, youngest on inside
35. What is a structure in which the beds dip away from a coastal point?
structural dome
36. Which of these structures is not a type of fold?
37. What kind of strain produces a normal fold?
38. What are faults called in which older rock typically moves up over younger rock?
thrust faults
39. Which direction does the hanging wall block move in a reverse fault with respect to the footwall block?
up, resulting in compressional stress
40. Which is a structure in which the beds dip towards a central point called?
structural basin
41. What do you call fractures in bedrock along which movement has taken place?
42. What force pushes ground water from pore to pore below the water table?
43. What is common in an unconfined water table around a pumping well?
contamination or cone of depression
44. Which rock is likely to be the most porous?
45. Which sedimentary rock is likely to be the most permeable?
46. What rock type could be a good example of an aquifer?
47. What rock or sediment type is likely to be an effective aquifer?
wet mud?
48. Within the zone of saturation, ground water flows from the region of?
ground water flows from areas of high hydraulic head to low hydraulic head/ WATER TABLE
49. Which three world famous regions contain large numbers of geezers?
Yellowstone Nat'l Park, Wyoming, The Geysers, CA, and ?
50. Which bedrock is associated with the development of past topography?