Earth Sciences 2240F/G Lecture Notes - Lecture 5: Geophysics, Unimak Island, Blast Fishing
15 Oct 2017
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In chapter 4 we looked at various fault types, including a thrust fault" (fig. 1), where one rock block is clearly thrust up and over the other by the compressive stress on the system. In a simple schematic, figure 2 shows an example of megathrust geometry; if you need a. Real" scenario, assume that the right-hand plate is the north. American plate and the left-hand one is the juan de fuca plate. This would be the current situation on the west coast of british. Columbia, where the uplift portion represents vancouver island. Dawes and dawe (2013), basics geologic structures. During the life time of a subduction zone (many tens of millions of years), the compressive activity between the plates never stops. However, the two plates typically do not slip continually and gently past each other as though they were well-lubricated.
