Results 51 to 60 of about 196,173 (215)

(Ultra)high‐Pressure Metamorphism in Sedimentary Versus Basaltic Rocks: Insights From a Variscan Mélange in the South Carpathians

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva, Bruno V. Ribeiro, Gavril Săbău, Fabricio Caxito, Paulo A. de Paiva‐Silva, Pierre Lanari, George Luvizotto, Mahyra Tedeschi   +7 more
wiley   +1 more source

Generation of Continental Lithospheric Mantle by Tectonic Isolation of Oceanic Plate

Geochemistry, Geophysics, Geosystems, 2022
Continental formation models invoke subduction or plume‐related processes to create the buoyant, refractory character of continental lithospheric mantle (CLM).
Brian Oller, James M. D. Day, Neal W. Driscoll, Peter F. Lonsdale   +3 more
doaj   +1 more source

Metamorphic Reactivity Influences Amphibole Creep Behaviour

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rheological behaviour of solid‐solution minerals may play an important role in determining how metamorphic crust accommodates deformation. Whether or not a mineral's deformation is diffusion or dislocation‐mediated depends on a range of extrinsic variables such as stress, strain rate and temperature, as well as intrinsic variables such as ...
Alix Osinchuk, Brendan V. Dyck, Jesse B. Walters   +2 more
wiley   +1 more source

Plume‐Modified Lithosphere Mantle Controlled the Cenozoic Sediment Thickness in the Tarim Basin

Geophysical Research Letters
The Cenozoic sediments are very thick in the southwest Tarim Basin and very thin in the northwest, but what controls these variations is unclear.
Xiao Xiang, Hanlin Chen, Lin Chen, Xi Xu, Xiubin Lin, Zhong Li, Zhiyong Yan   +6 more
doaj   +1 more source

Lithospheric heating by mantle plumes [PDF]

Geophysical Journal International, 1987
Summary. A broad topographic swell is associated with the Hawaiian hotspot. A kinematic model is developed assuming that downstream of the hotspot this swell is produced by lithospheric heating by a mantle plume. Material from the model plume flows radially in the asthenosphere and eventually heats the lower lithosphere.
openaire   +1 more source

Investigating the Antarctic Lithosphere Through Sp Receiver Function Analysis

Geochemistry, Geophysics, Geosystems
To better understand the lithosphere of Antarctica, we imaged its lithosphere‐asthenosphere boundary (LAB) and crust‐mantle transition using Sp receiver functions from teleseismic events analyzed at individual stations and with common conversion point ...
Sarah E. Brown, Karen M. Fischer
doaj   +1 more source

Mantle wedge serpentinization effects on slab dips

Terrestrial, Atmospheric and Oceanic Sciences, 2017
The mechanical coupling between a subducting slab and the overlying mantle wedge is an important factor in controlling the subduction dip angle and the flow in mantel wedge. This paper investigates the role of the amount of mantle serpentinization on the
Eh Tan
doaj   +1 more source

Mineralogy of the HSE in the subcontinental lithospheric mantle —An interpretive review

Lithos, 2020
We thank Laurie Reisberg, Hannah Hughes and an anonymous referee for their criticism, which greatly improved the quality of our manuscript. We also are indebted to Prof. Sisir K. Mondal for Editorial handling of this work and their constructive edits.
González-Jiménez, J.M., Tassara, S., Schettino, E., Roqué-Rosell, J., Farré-de-Pablo, J., Saunders, J.E., Deditius, A.P., Colás, V., Rovira-Medina, J. J., Dávalos, M.G., Schilling, M., Jiménez-Franco, A., Marchesi, C., Nieto, F., Proenza, J.A., Gervilla, F.   +15 more
openaire   +4 more sources

Investigating the Effect of Lithosphere Thickness and Viscosity on Mantle Dynamics Throughout the Supercontinent Cycle

Geochemistry, Geophysics, Geosystems
The relationship between the lithosphere and the mantle during the supercontinent cycle is complex and poorly constrained. The processes which drive dispersal are often simplified to two end members: slab pull and plume push.
A. Plimmer, J. H. Davies, J. Panton
doaj   +1 more source

Imaging a Decratonized Lithosphere: A Case of the Eastern North China Craton

Geophysical Research Letters, 2022
During decratonization, the cratonic lithosphere mantle experienced composition transformation and thinning, which have been extensively studied in the North China Craton.
Hongqiang Li, Xingfu Huang, Rui Gao, Ramon Carbonell, Lei Gao   +4 more
doaj   +1 more source