1. Shri Satsangi Saketdham “Ram- Ashram” Group Of Institutions, Vadasma

2. Group Name Patel Parth (130910106023) Prajapati Ravi (130910106029)
Patel Karan ( )
Patel Bhoomi ( )
Vadaviya Anu ( )

3. Deformation of rocks produces:
Structural Geology
Deformation of rocks produces:
folds, joints, faults

4. Monocline - southeastern Utah

5. Northeastern California - note tilted layers

7. Wasatch Front NE of Salt Lake City, UT

8. Types of Stresses Compressive →☐← rocks are squeezed
Tensile ←☐→ rocks are pulled apart
Shear ↑☐↓ rocks are sheared

9. Responses to Stress
Folding - produced by compressive stress on ductile rocks
Joints, Faults - produced by any type of stress on brittle rocks

10. Folding Anticlines - where layers are warped upward
Synclines - where layers are warped downward
Compression of ductile rocks produces alternating anticlines and synclines

11. Strongly Folded Rock
Note quartzite layer folded back on itself - Baraboo, WI

12. Joints
Fractures in rock along which no movement has occurred - can form in response to any type of stress
Often promote mechanical weathering since they provide access for water
Yellowstone Natl Park, WY
Devil’s Postpile Natl Mon, CA

13. Faults Fractures in rock along which movement has occurred
Different styles reflect different stresses
Canyonlands Natl Park, UT
Merrimac Valley, NH

14. Dip-slip Faults Best seen in cross-section view (vertical offsets)
Normal Faults - upper block slides down (tensional stress)
Reverse Faults - upper block is pushed up (compressional stress)

15. Faulting in Esker - near White River Jct., VT (??)

16. Strike-slip Faults
Result from shear stresses - best seen in map view (horizontal offsets)
Right-lateral vs. left-lateral

17. Bedrock Geology of Connecticut

18. Bedrock Geologic Map of Massachusetts
Features to Note:
N-S “striping”: compression from E-W
NE-SW “striping” in E
Cape consists of recent glacial sediment

19. Thank You