Results 1 to 10 of about 2,903 (264)

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

open access: gold, 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.
Caroline Eakin
openalex   +2 more sources

The Deep Roots of Geology: Tectonic History of Australia and its Margins expressed by Mantle Anisotropy [PDF]

open access: gold, 2021
Abstract The Australian continental crust preserves a rich geological history, but it is unclear to what extent this history is expressed deeper within the mantle. Scattering of surface waves predominantly between 100-200 km depth by lateral gradients in seismic anisotropy, termed Quasi-Love waves, offer potential new insights.
Caroline Eakin
openalex   +2 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
Caroline Eakin
openalex   +2 more sources

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   +3 more
openalex   +6 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

Geology: Core and Mantle [PDF]

open access: bronzeNature, 1970
Our Geomagnetism Correspondent
openalex   +2 more sources

Geology, Mantle Tomography, and Inclination Corrected Paleogeographic Trajectories Support Westward Subduction During Cretaceous Orogenesis in the North American Cordillera

open access: bronzeGeoscience Canada, 2014
Geological evidence, including the presence of two passive margin platforms, juxtaposed and mismatched deformation between North America and more outboard terranes, as well as the lack of rift deposits, suggest that North America was the lower plate during both the Sevier and Laramide events and that subduction dipped westward beneath the Cordilleran ...
Robert S. Hildebrand
openalex   +3 more sources

Geology: Rocks from Mantle [PDF]

open access: bronzeNature Physical Science, 1972
Vera Rich
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

Home - About - Disclaimer - Privacy