Results 1 to 10 of about 41,648 (236)

Mapping a hidden terrane boundary in the mantle lithosphere with lamprophyres [PDF]

Nature Communications, 2018
Lamprophyres represent hydrous alkaline mantle melts that are a unique source of information about the composition of continental lithosphere. Here the authors use isotopic compositions of lamprophyres to map a hidden terrain boundary and an unknown ...
Arjan H. Dijkstra, Callum Hatch
doaj   +2 more sources

Volcanism and long-term seismicity controlled by plume-induced plate thinning [PDF]

Nature Communications
Mantle plumes, the hot upwellings from the Earth’s core-mantle boundary, are thought to trigger surface uplift and the emplacement of large igneous provinces (LIPs). Magmatic centres of many LIPs are scattered over thousands of kilometres.
Raffaele Bonadio, Sergei Lebedev, David Chew, Yihe Xu, Javier Fullea, Thomas Meier   +5 more
doaj   +2 more sources

Dual-layered mantle lithosphere beneath southeastern Canadian Cordillera. [PDF]

Nat Commun
Abstract The craton edge beneath southwestern Canada has been characterized as a 'lithospheric step' involving the transition from the warm Cordillera to an ancient, mechanically strong North American craton. Using converted shear waves that are sensitive to this boundary zone, our study offers a new snapshot of this transition and ...
Huang S, Gu YJ, Johnston ST.
europepmc   +2 more sources

The subantarctic lithospheric mantle [PDF]

Geological Society, London, Memoirs, 2021
Abstract We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gondwana-rifted fragment. Small amounts
Guillaume Delpech, James M. Scott, Michel Grégoire, Bertrand N. Moine, Dongxu Li, Jingao Liu, D. Graham Pearson, Quinten H. A. van der Meer, Tod E. Waight, Gilbert Michon, Damien Guillaume, Suzanne Y. O'Reilly, Jean-Yves Cottin, André Giret   +13 more
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Patched removal of the mantle lithosphere under orogens: A systematic numerical study

Frontiers in Earth Science, 2023
Delamination or convective thinning could cause large-scale and complete removal of the mantle lithosphere under orogens. However, geological and geophysical observations suggest that patched removal of the mantle lithosphere has occurred in some orogens,
Tian Lei, Jie Liao, Jie Liao, Jie Liao, Zhong-Hai Li, Mian Liu, Lun Li   +6 more
doaj   +1 more source

XENOLITH GARNETS FROM MIR KIMBERLITE PIPE: CHEMICAL COMPOSITION AND EVIDENCE OF METASOMATIC PROCESSES IN THE LITHOSPHERE MANTLE

Геодинамика и тектонофизика, 2022
This paper reports the results on the composition of lithosphere mantle under the Mirny kimberlite field. The authors investigated 57 samples of the mantle xenoliths collected from the Mir pipe.
T. V. Kalashnikova, S. I. Kostrovitsky, K. A. Sinitsyn, E. E. Yudintseva   +3 more
doaj   +1 more source

Coupling Between Lithosphere Removal and Mantle Flow in the Central Andes

Geophysical Research Letters, 2021
The central Andes is part of a Cordilleran orogen formed through continent‐ocean convergence. In contrast to the thickened crust, the mantle lithosphere below much of the orogen is anomalously thin.
Huilin Wang, Claire A. Currie, Peter G. DeCelles   +2 more
doaj   +1 more source

Robust Seismic Images of the Hawaiian Plume

Geophysical Research Letters, 2022
To image the Hawaiian plume and the plume‐lithosphere interaction, we determine a robust 3‐D shear‐wave velocity (Vs) model of the upper mantle and the mantle transition zone (MTZ) beneath Hawaii by jointly inverting teleseismic S‐wave arrival times ...
Chuanwei Ye, Xin Liu, Dapeng Zhao, Shujuan Zhao   +3 more
doaj   +1 more source

Joint modeling of lithosphere and mantle dynamics elucidating lithosphere‐mantle coupling [PDF]

Geophysical Research Letters, 2008
We provide new insights into the lithosphere‐mantle coupling problem through a joint modeling of lithosphere dynamics and mantle convection and through comparison of model results with the high resolution velocity gradient tensor model along the Earth's plate boundary zones.
A. Ghosh, W. E. Holt, L. Wen, A. J. Haines, L. M. Flesch   +4 more
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Making Cratonic Lithospheric Mantle [PDF]

Journal of Geophysical Research: Solid Earth, 2018
AbstractThe origin of cratonic lithospheric mantle has been attributed to either high‐pressure (5–7 GPa) melting in hot mantle plumes or low‐pressure (<5 GPa) melting in mid‐ocean ridges or suprasubduction zones. To resolve this long‐standing debate, it is necessary to confirm under what depths the incipient cratonic mantle melted.
Bin Su, Yi Chen
openaire   +1 more source