
doi: 10.1002/2016jb013460
handle: 2164/8413
AbstractCrustal inheritance is often considered important in the tectonic evolution of the Wilson Cycle. However, the role of the mantle lithosphere is usually overlooked due to its difficulty to image and uncertainty in rheological makeup. Recently, increased resolution in lithosphere imaging has shown potential scarring in continental mantle lithosphere to be ubiquitous. In our study, we analyze intraplate deformation driven by mantle lithosphere heterogeneities from ancient Wilson Cycle processes and compare this to crustal inheritance deformation. We present 2‐D numerical experiments of continental convergence to generate intraplate deformation, exploring the limits of continental rheology to understand the dominant lithosphere layer across a broad range of geological settings. By implementing a “jelly sandwich” rheology, common in stable continental lithosphere, we find that during compression the strength of the mantle lithosphere is integral in generating deformation from a structural anomaly. We posit that if the continental mantle is the strongest layer within the lithosphere, then such inheritance may have important implications for the Wilson Cycle. Furthermore, our models show that deformation driven by mantle lithosphere scarring can produce tectonic patterns related to intraplate orogenesis originating from crustal sources, highlighting the need for a more formal discussion of the role of the mantle lithosphere in plate tectonics.
Atmospheric Science, 550, Soil Science, Aquatic Science, inherited structures, Oceanography, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), QE, lithosphere scars, Water Science and Technology, Earth-Surface Processes, intraplate orogenesis, Ecology, Palaeontology, Forestry, mantle lithosphere, 004, QE Geology, Geophysics, Space and Planetary Science, plate tectonics, continental rheology
Atmospheric Science, 550, Soil Science, Aquatic Science, inherited structures, Oceanography, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), QE, lithosphere scars, Water Science and Technology, Earth-Surface Processes, intraplate orogenesis, Ecology, Palaeontology, Forestry, mantle lithosphere, 004, QE Geology, Geophysics, Space and Planetary Science, plate tectonics, continental rheology
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