Asthenospheric low-velocity zone consistent with globally prevalent partial melting
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 …
viscosity controls how convection in the mantle below it is expressed at the Earth's surface …
Compositional heterogeneity in the mantle transition zone
Earth's mantle transition zone (MTZ) is characterized by several sharp increases in seismic
wave speed between~ 300 km and~ 850 km depth. These seismic discontinuities are …
wave speed between~ 300 km and~ 850 km depth. These seismic discontinuities are …
On the relative temperatures of Earth's volcanic hotspots and mid-ocean ridges
Volcanic hotspots are thought to be fed by hot, active upwellings from the deep mantle, with
excess temperatures (T ex)~ 100° to 300° C higher than those of mid-ocean ridges …
excess temperatures (T ex)~ 100° to 300° C higher than those of mid-ocean ridges …
Defining continental lithosphere as a layer with abundant frozen‐in structures that scatter seismic waves
We investigate the structure of the continental lithosphere by combining two approaches: a
systematic survey of abrupt changes in seismic properties detected by P‐to‐S converted …
systematic survey of abrupt changes in seismic properties detected by P‐to‐S converted …
Multigenetic origin of the X‐discontinuity below continents: Insights from African receiver functions
Constraints on chemical heterogeneities in the upper mantle may be derived from studying
the seismically observable impedance contrasts that they produce. Away from subduction …
the seismically observable impedance contrasts that they produce. Away from subduction …
Ultra‐low velocity zone beneath the Atlantic near St. Helena
There are various hotspots in the Atlantic Ocean, which are underlain by mantle plumes that
likely cross the mantle and originate at the core‐mantle boundary. We use teleseismic core …
likely cross the mantle and originate at the core‐mantle boundary. We use teleseismic core …
On the detection of upper mantle discontinuities with radon-transformed receiver functions (CRISP-RF)
Seismic interrogation of the upper mantle from the base of the crust to the top of the mantle
transition zone has revealed discontinuities that are variable in space, depth, lateral extent …
transition zone has revealed discontinuities that are variable in space, depth, lateral extent …
X‐discontinuity beneath the Indian Shield—Evidence for remnant Tethyan oceanic lithosphere in the mantle
Beneath the continents and island arcs, a seismic discontinuity is often detected around 300
km depth, referred to as the X‐discontinuity. Various mineralogical and petrological …
km depth, referred to as the X‐discontinuity. Various mineralogical and petrological …
Mapping the mantle transition zone beneath the Indian Ocean geoid low from Ps receiver functions
The most pronounced high-amplitude (− 40 to− 106 m) geoid deficit with respect to the
Earth's reference shape straddles the Indian Ocean. The existing hypotheses suggest a …
Earth's reference shape straddles the Indian Ocean. The existing hypotheses suggest a …
Textures Induced by the Coesite‐Stishovite Transition and Implications for the Visibility of the X‐Discontinuity
M Krug, M Saki, E Ledoux, JP Gay… - Geochemistry …, 2022 - Wiley Online Library
The coesite‐stishovite phase transition is considered the most plausible candidate to
explain the X‐discontinuity observed at around 300 km depth in a variety of tectonic settings …
explain the X‐discontinuity observed at around 300 km depth in a variety of tectonic settings …