Chapter 6 - Chapter 6 General Mechanics of thrust motion -...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 6 General Mechanics of thrust motion - Typically, the high degree of friction between two massive plates means that they get stuck (or „locked ) at various contact points for some period of time, then suddenly release, and jump ahead. during the time the plates are locked, huge stress is accumulating because – as we noted above - the plates themselves don t stop their overall compression. That means that the rocks in the vicinity of the thrust zone must be greatly deformed. In Figure 2 we see that deformation expressed as progressive uplift and bending of the front edge (locked edge) of the right-hand plate. When the point is reached that the stress accumulated in the front end of the deformed plate is sufficient to cause the „lock to break, that sudden release of energy produces a megathrust earthquake . e Megathrust definition e occurs at an interplate zone where one plate subducts beneath another e
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/01/2010 for the course EARTH SCIE 2010 taught by Professor Neil during the Fall '10 term at UWO.

Page1 / 2

Chapter 6 - Chapter 6 General Mechanics of thrust motion -...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online