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The African upper mantle and its relationship to tectonics and surface geology [PDF]

open access: bronzeGeophysical Journal International, 2008
This paper focuses on the upper-mantle velocity structure of the African continent and its relationship to the surface geology. The distribution of seismographs and earthquakes providing seismograms for this study results in good fundamental and higher mode path coverage by a large number of relatively short propagation paths, allowing us to image the ...
Keith Priestley   +2 more
exaly   +7 more sources

The Deep Roots of Geology: Tectonic History of Australia Preserved as Mantle Anisotropy [PDF]

open access: green, 2021
Abstract Australia is an old stable continent with a rich geological history. Limitations in sub-surface imaging below the Moho, however, mean that is unclear to what extent, and to what depth, this rich geological history is expressed in the mantle.
C. M. Eakin
openalex   +2 more sources

Geology, geochronology, and geochemistry of the Miocene–Pliocene Ancestral Cascades arc, northern Sierra Nevada, California and Nevada: The roles of the upper mantle, subducting slab, and the Sierra Nevada lithosphere [PDF]

open access: bronzeGeosphere, 2008
The assemblage of ca. 28–3 Ma volcanic rocks exposed in the Lake Tahoe–Reno region of the northern Sierra Nevada, United States, is interpreted to be part of the Ancestral Cascades volcanic arc. The volcanic rocks are commonly highly porphyritic, including abundant plagioclase with clinopyroxene, amphibole, and rare biotite, and range from basaltic ...
Brian Cousens   +4 more
openalex   +3 more sources

Mantle structural geology from seismic anisotropy

open access: green, 1999
Seismic anisotropy is a ubiquitous feature of the subcontinental mantle. This can be inferred both from direct seismic observations of shear wave splitting from teleseismic shear waves, as well as the petrofabric analyses of mantle nodules from kimberlite pipes. The anisotropy is principally due to the strain-induced lattice preferred orientation (LPO)
Paul G. Silver   +4 more
openalex   +3 more sources

The Deep Roots of Geology: Tectonic History of Australia as expressed by Mantle Anisotropy 

open access: gold, 2022
<p>Australia is an old stable continent with a rich geological history. Limitations in sub-surface seismic imaging below the Moho, however, mean that is unclear to what extent, and to what depth, this rich geological history is expressed in the mantle. Studies of seismic anisotropy, which reflect past/present mantle deformation, can offer
C. M. Eakin
openalex   +2 more sources

Crust-Mantle Interaction Controls the Formation of High-Mg Adakitic Rocks: Evidence from Early Cretaceous Intrusive Complexes in Luxi Terrane, North China Craton [PDF]

open access: yesLithosphere, 2023
High-Mg adakite rocks preserve crucial information about the crust-mantle interactions during the magma evolution. The Luxi Terrane, southeastern North China Craton, stores a set of Early Cretaceous high-Mg adakite rocks; nevertheless, their petrogenesis
Songyan Liu   +6 more
doaj   +1 more source

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