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A More Responsive M: Dike Injection via Diffuse Yielding in 2-D Rift Models

by Thomas Morrow, Jean-Arthur Olive, Mark D. Behn and Paris Smalls
 
Magmatic accommodation of extension is often simulated by imposing a divergence term in the continuity equation in a column of model elements. The ratio of the imposed divergence to total extension is the magmatic fraction of spreading, M. To date, most numerical geodynamic models impose a uniform M value through the domain and evaluate tectonic responses to different M values. Imposed uniform M values do not permit magmatic responses to changing lithosphere stresses, topography, and fault evolution. We present a computationally-inexpensive diffuse yielding formulation for M that responds to changing stresses, while still allowing for controlled variations in magmatic overpressure and supply.

Cite as:

Morrow, T., Olive, J.-A., Behn, M. D., & Smalls, P.. (2020, July 21). A More Responsive M: Dike Injection via Diffuse Yielding in 2–D Rift Models (Version 1). Tectonics Community Science Workshop 2020. https://doi.org/10.6084/m9.figshare.12685880.v1

@article{Morrow2020,
author = "Thomas Morrow, Jean-Arthur Olive, Mark D. Behn and Paris Smalls",
title = "{A More Responsive M: Dike Injection via Diffuse Yielding in 2–D Rift Models (Version 1)}",
year = "2020",
month = "7",
url = "https://2020cigtectonics.figshare.com/articles/poster/A_More_Responsive_M_Dike_Injection_via_Diffuse_Yielding_in_2_D_Rift_Models/12685880",
doi = doi.org/10.6084/m9.figshare.12685880.v1}

 

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