Vocabulary Terms

You should be able to define the following terms.
 

Thrust Sheets	Allocthonous	Autochthonous	allochthon
autochthon	Window ("Fenster""	Klippe	decollement
basal shearing plane	"Thin-skinned" Tectonics	Nappe	Tectonic transport
Ramp	Flat	Cutoff Angle	Cutoff-line
foot wall ramp	lateral ramp	hanging-wall flat	branch point
horses	duplex	imbricate fan	floor thrust
roof thrust	normal duplex	antiformal duplex	forward-dipping duplex
imbricate splay fault	Transfer zone	tear fault	compartmental faults
Critical taper

Concepts

You should be able to give short answers to the following questions:

1.) What is the significance of Thrust Faults in regional tectonics?

2.) What are the regional components of a thrust fault system (allocthon, autochthon, klippe, windows, basal decollement etc.).

3.) Draw a cross-section of an idealized thrust fault. Label the geometric components of the thrust fault (ramps, flats, cutoff angles, cutoff lines, forced-folds). Explain how this geometry develops (i.e., Where and why do flats and ramps form?)

4.) Draw a cross-section through an idealized duplex structure. Label the major components (Horses, floor thrust, roof, thrust). Explain how in-sequence, or out of sequence thrust faulting gives rise to duplexes

5.) What is an imbricate fan?

6.) What is the significance of pore-fluid pressure in the development of large thrust-sheets?

7.) Explain the significance of  "critical taper" in the "wedge-model" of thrusting.

8.) Why do tear-faults develop? What is the significance of "transfer zones"?