Structural Geology: Lecture 11

1
Structural Geology Lecture 11

• Review of last lecture ramps, frontal, lateral,
  and oblique.
• Todays lecture continue discussion on thrust
  systems with examples.

2

• Shortening mechanisms
• Thrusting
• Folding
• Development of cleavage vs. pressure solution (we
  will talk about this later)

3

• Thrust systems
• Pop-up structures.
• Imbricate systems (trailing edge vs. leading edge
  imbricate systems.
• Duplex systems (a) foreland-dipping, (b)
  hinterland-dipping, (c) antiformal, and (d)
  out-of-sequence duplexes.
• Passive and active roof faults of a duplex
  systems.
• Wedge tectonics.

4
Lateral and oblique ramps of the Lewis
thrust, Alberta (Canada) and Montana (USA)
klippe
window