Articles with "mantle transition" as a keyword



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Receiver Function Imaging of Mantle Transition Zone Discontinuities Beneath the Tanzania Craton and Adjacent Segments of the East African Rift System: EARS MANTLE TRANSITION ZONE

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Published in 2017 at "Geophysical Research Letters"

DOI: 10.1002/2017gl075485

Abstract: The mantle transition zone (MTZ) discontinuities beneath the Tanzania Craton and the Eastern and Western Branches of the East African Rift System are imaged by stacking over 7,100 receiver functions. The mean thickness of the… read more here.

Keywords: tanzania craton; mantle transition; transition zone;
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Mantle transition zone structure beneath the Central Asian Orogenic Belt

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Published in 2019 at "Science China Earth Sciences"

DOI: 10.1007/s11430-018-9429-3

Abstract: Over the past decades, there have been hot debates in the geodynamic community regarding to the deep evolution mechanisms of Cenozoic volcanism in the Central Asian Orogenic Belt (CAOB). Of all the constraints available, high… read more here.

Keywords: transition zone; mantle transition; orogenic belt; central asian ... See more keywords
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Nephelinites in eastern China originating from the mantle transition zone

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Published in 2021 at "Chemical Geology"

DOI: 10.1016/j.chemgeo.2021.120276

Abstract: Abstract Nephelinites, a highly alkaline volcanic rock type, have widely been thought to be formed in a shallow lithosphere previously impregnated with phlogopite and/or amphibole. Here we argue that nephelinites start melting at much greater… read more here.

Keywords: mantle transition; transition zone; eastern china; nephelinites eastern ... See more keywords
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The Water-Fe-Pressure dependent single-crystal elastic properties of wadsleyite: Implications for the seismic anisotropy in the upper Mantle Transition Zone

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Published in 2021 at "Earth and Planetary Science Letters"

DOI: 10.1016/j.epsl.2021.116955

Abstract: Abstract Recent seismic studies suggested an anisotropic Mantle Transition Zone (MTZ) in areas adjacent to subducted slabs. Wadsleyite is the main anisotropy contributor in the upper MTZ, therefore the interpretation of these seismic observations requires… read more here.

Keywords: mantle transition; transition zone; water; single crystal ... See more keywords
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Fluid-fluxed melting of mantle versus decompression melting of hydrous mantle plume as the cause of intraplate magmatism over a stagnant slab: Implications from Fukue Volcano Group, SW Japan

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Published in 2017 at "Lithos"

DOI: 10.1016/j.lithos.2017.02.011

Abstract: Abstract The Pacific Plate subducting from the Japan Trench has accumulated in the mantle transition zone beneath NE Asia, and intraplate magmatism has been active above the stagnant Pacific slab. To understand the origin of… read more here.

Keywords: intraplate magmatism; hydrous mantle; mantle transition; slab ... See more keywords
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Lateral variation of the mantle transition zone beneath the Tibetan Plateau: Insight into thermal processes during Indian–Asian collision

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Published in 2020 at "Physics of the Earth and Planetary Interiors"

DOI: 10.1016/j.pepi.2020.106452

Abstract: Abstract The Indian plate began to subduct under the Eurasian plate in the late Mesozoic. Since the Eocene, continuous continental collision has resulted in the uplift of the Tibetan Plateau with extensive volcanic activities. Geophysical… read more here.

Keywords: plateau; tibetan plateau; plate; mantle transition ... See more keywords
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Mantle transition zone beneath central-eastern Greenland: Possible evidence for a deep tectosphere from receiver functions

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Published in 2018 at "Tectonophysics"

DOI: 10.1016/j.tecto.2018.02.008

Abstract: Abstract We investigate the mantle of central-eastern Greenland by using recordings with data from 24 local broad-band seismograph stations. We apply P wave receiver function technique and evaluate the difference in the arrival times of… read more here.

Keywords: eastern greenland; central eastern; mantle transition; greenland ... See more keywords
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The Mantle Transition Zone in Fennoscandia: Enigmatic High Topography Without Deep Mantle Thermal Anomaly

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Published in 2019 at "Geophysical Research Letters"

DOI: 10.1029/2018gl081742

Abstract: Seismological data acquired by dense receiver networks in Fennoscandia enable imaging of Earth's upper mantle structure at unprecedented resolution and provide critical observations for resolving the ongoing debate on the cause of enigmatic high topography… read more here.

Keywords: mantle transition; transition zone; topography; enigmatic high ... See more keywords
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Localized Anisotropy in the Mantle Transition Zone Due to Flow Through Slab Gaps

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Published in 2021 at "Geophysical Research Letters"

DOI: 10.1029/2021gl092712

Abstract: Measurement of anisotropy advances our understanding of mantle dynamics by linking remote seismic observations to local deformation state through constraints from mineral physics. The Pacific Northwest records the largest depth‐integrated anisotropic signals across the western… read more here.

Keywords: mantle transition; transition zone; flow slab; slab gaps ... See more keywords
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Anomalous mantle transition zone beneath the Yellowstone hotspot track

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Published in 2018 at "Nature Geoscience"

DOI: 10.1038/s41561-018-0126-4

Abstract: The origin of the Yellowstone and Snake River Plain volcanism has been strongly debated. The mantle plume model successfully explains the age-progressive volcanic track, but a deep plume structure has been absent in seismic imaging.… read more here.

Keywords: mantle transition; hotspot track; transition zone;
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Basaltic reservoirs in the Earth’s mantle transition zone

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Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2209399119

Abstract: Significance There is no direct access to the deep Earth mantle. Therefore, insights into the deep mantle composition rely on indirect observations from geophysics. We exploit seismic datasets of compressional and shear waves reflected at… read more here.

Keywords: earth mantle; mantle transition; transition zone; basaltic reservoirs ... See more keywords