Ductile deformation of the lithospheric mantle

JM Warren, LN Hansen - Annual Review of Earth and Planetary …, 2023 - annualreviews.org
The strength of lithospheric plates is a central component of plate tectonics, governed by
brittle processes in the shallow portion of the plate and ductile behavior in the deeper …

Asthenospheric low-velocity zone consistent with globally prevalent partial melting

J Hua, KM Fischer, TW Becker, E Gazel, G Hirth - Nature Geoscience, 2023 - nature.com
The asthenosphere plays a fundamental role in present-day plate tectonics as its low
viscosity controls how convection in the mantle below it is expressed at the Earth's surface …

Embracing craton complexity at depth

CM Cooper, MS Miller - Elements, 2024 - pubs.geoscienceworld.org
Variations within individual cratons, as well as across different cratons, are readily apparent
at the Earth's surface, providing indirect insight into the processes governing the formation …

A dynamic lithosphere–asthenosphere boundary near the equatorial Mid-Atlantic Ridge

CA Rychert, S Tharimena, N Harmon, S Wang… - Earth and Planetary …, 2021 - Elsevier
In plate tectonic theory a weak asthenosphere is required to facilitate the motions of the rigid
plates. Partial melt could weaken the mantle, in turn impacting convection, but to date the …

Global patterns in cratonic mid‐lithospheric discontinuities from Sp receiver functions

HE Krueger, I Gama, KM Fischer - Geochemistry, Geophysics …, 2021 - Wiley Online Library
The goal of this study is to constrain the origins of layering in the seismic velocity structure
within the cratonic mantle lithosphere (ie mid‐lithospheric discontinuities [MLDs]). For long …

Shear velocity inversion guided by resistivity structure from the PI‐LAB Experiment for integrated estimates of partial melt in the mantle

N Harmon, S Wang, CA Rychert… - Journal of …, 2021 - Wiley Online Library
The lithosphere‐asthenosphere system is fundamental to our understanding of mantle
convection and plate tectonics. The different sensitivities of seismic and electromagnetic …

Imaging the seismic velocity structure of the crust and upper mantle in the northern East African Rift using Rayleigh wave tomography

EL Chambers, N Harmon, CA Rychert… - Geophysical Journal …, 2022 - academic.oup.com
Understanding the dynamics and evolution of continental rifting is broadly important for our
understanding of plate tectonics. The northern East African Rift offers an excellent …

Evolution, Modification, and Deformation of Continental Lithosphere: Insights from the Eastern Margin of North America

MD Long - Annual Review of Earth and Planetary Sciences, 2024 - annualreviews.org
Continental lithosphere is deformed, destroyed, or otherwise modified in several ways.
Processes that modify the lithosphere include subduction, terrane accretion, orogenesis …

Lithospheric structure above the Northern Appalachian Anomaly: Initial results from the NEST array

K Espinal, MD Long, P Karabinos… - Geophysical Research …, 2024 - Wiley Online Library
Seismic tomography observations show a low‐velocity feature in the upper mantle beneath
eastern North America known as the Northern Appalachian Anomaly (NAA). Proposed …

Map** the lithosphere and asthenosphere beneath Alaska with Sp converted waves

I Gama, KM Fischer, J Hua - Geochemistry, Geophysics …, 2022 - Wiley Online Library
We obtained a 3D image of crust and mantle seismic velocity gradients beneath the state of
Alaska using common‐conversion point (CCP) stacking of S‐to‐p converted body waves …