Structural Geology

1. 1rocks extend in the direction of "σ3"

   1. ATrue
   2. BFalse
2. 2σ1 represents what amount of stress?

   1. Amost compression
   2. Bminimum compression
   3. Cintermediate
3. 3σ3 represents what amount of stress?

   1. Aminimum compression
   2. Bmaximum compression
   3. Cintermediate
4. 4On a Mohr diagram the x axis represents what?

   1. Anormal stress, σ1
   2. Bshear stress, σs
   3. Cshear stress, σ3
   4. Dnormal stress, σn
5. 5differential stress can be calculated by the equation [blank_start]σd=σ1-σ3[blank_end]

   1. Aσd=σ1-σ3
6. 6if σ3 increases you need a higher σ1 to fracture it

   1. ATrue
   2. BFalse
7. 7How does water inside the pores of a rock effect stress?

   1. Ait reduces the overall stress
   2. Bit increases the stress
   3. Cit makes the rock stronger
8. 8According to Andersson's classification:
   Normal fault regime = [blank_start]60[blank_end]°
   thrust fault regime= [blank_start]30[blank_end]°
   strike slip regime = [blank_start]90[blank_end]°

   1. A60
   2. B30
   3. C90
9. 9point where an elastic materiel breaks: [blank_start]yield point[blank_end]

   1. Ayield point
10. 10elastic materials are associated with [blank_start]non-permanent[blank_end] deformation while plastic materials experience [blank_start]permanent[blank_end] deformation.

    1. Anon-permanent
    2. Bpermanent
    3. Cnon-permanent
    4. Dpermanent

11. 11The failure envelope becomes steeper as the circle becomes smaller.

    1. ATrue
    2. BFalse
12. 12Stress in the lithosphere:
    
    1. [blank_start]Quartz[blank_end] - where [blank_start]quartz[blank_end] become ductile the crust strength [blank_start]reduces[blank_end]
    2. crust strengthens and is dominated by [blank_start]feldspar[blank_end]
    3. [blank_start]Feldspar[blank_end] - where [blank_start]feldspar[blank_end] becomes [blank_start]ductile[blank_end] the crust strength reduces
    4. [blank_start]Olivine[blank_end] - [blank_start]olivine[blank_end] [blank_start]strengthens[blank_end] the crust

    

    1. AFeldspar
    2. BQuartz
    3. COlivine
    4. Dquartz
    5. Efeldspar
    6. Folivine
    7. Greduces
    8. Hincreases
    9. Iolivine
    10. Jfeldspar
    11. Kquartz
    12. LQuartz
    13. MFeldspar
    14. NOlivine
    15. Ofeldspar
    16. Pquartz
    17. Qolivine
    18. Rbrittle
    19. Splastic
    20. Tductile
    21. Uelastic
    22. VFeldspar
    23. WOlivine
    24. XQuartz
    25. Yolivine
    26. Zquartz
    27. AAfeldspar
    28. ABweakens
    29. ACstrengthens

Description

Quiz on Structural Geology, created by Meredith Daniels on 24/09/2015.

Author

Meredith Daniels

Language

English

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