Abstract
Finite-element modeling of incompressible viscous materials allows quantitative analysis of dynamic gravitational tectonics. Students who construct such models develop an intimate appreciation of stress, strain, and strain rate in geologic processes, and the results can be used to demonstrate basic gravitational tectonics in a manner that can be easily understood by others. A model of a plate tectonic spreading center shows the push from the ridge component of the plate tectonic driving force and horizontal extensional stress consistent with normal faulting and earthquakes. A modeled subduction zone shows the pull from the trench component of the driving force and stresses consistent with the distribution of earthquake foci within some Benioff zones.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
