Fault and folding

1. Earth 238-23 Fault and folding *Fault-bend folds

2. Earth 238-23 Fault and folding

3. Earth 238-23 Fault and folding

4. Earth 238-23 Fault and folding

5. Earth 238-23 Fault and folding *Fault-bend folds develop in normal fault systems, most notably rollover anticlines.

6. Earth 238-23 Faulting and stress

7. Earth 238-23 Faulting and stress

8. Earth 238-23 Faulting and stress

9. Earth 238-23 Fault systems

10. Earth 238-23 Fault systems: normal fault

11. Earth 238-23 Fault systems: normal fault

12. Earth 238-23 Fault systems: reverse fault *Duplex system : Fold and thrust belt, thin-skinned tectonic.

13. Earth 238-23 Fault systems: reverse fault

14. Earth 238-23 Fault systems: reverse fault « In sequence » thrusts: The thrusts tend to break forward towards the basin because it is composed of sediment weaker than that incorporated in the thrust system. « Out-of-sequence » thrusts: thrusts that form later in the interior of the wedge of previously thrust-faulted material.

15. Earth 238-23 Fault systems: reverse fault

16. Earth 238-23 Fault systems: strike-slip fault *Restraining or compressional bends- folds and thrusts. *Releasing or extensional bends- normal faults and grabens

17. Earth 238-23 Fault systems: strike-slip fault

18. Earth 238-23 Fault systems: strike-slip fault

19. Earth 238-23 Fault systems: strike-slip fault *Flower structure

20. Earth 238-23 Transpression-Transtension *Transpression *Transtension Transpression or compression normal to the fault during strike-slip. Transtension or extension normal to the fault during strike-slip. Can be used to describe motion across entire strike-slip fault zone, or that with in bends. Produces similar structures to restraining or releasing bends in strike-slip faults.