Results 161 to 170 of about 120,010 (213)

Redox chemistry of early Earth and the origin of life. [PDF]

Commun Chem
Moldogazieva NT, Terentiev AA, Mokhosoev IM, Astakhov DV.   +3 more
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Sluggish post-garnet transformation controls slab stagnation at the uppermost lower mantle. [PDF]

Nat Commun
Shen Y, Yang J, Zhao L.
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Unique composition and evolutionary histories of large low velocity provinces. [PDF]

Sci Rep
Panton J, Davies JH, Koelemeijer P, Myhill R, Ritsema J.   +4 more
europepmc   +1 more source

Mantle plumes and geochemistry

Chemical Geology, 2007
Abstract There is considerable interest in the extent to which mantle plumes exist, how many there may be, and how best they can be recognized. It has proved unexpectedly difficult to image them consistently from seismology, and it has been suggested that they may be recognized from the geochemistry of rocks erupted at the Earth's surface.
Chris Hawkesworth, Anders Scherstén
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Mantle Plumes and Their Interactions

2022
Hotspots are regions of intraplate volcanism or especially strong volcanism along plateboundaries, and many of them are likely caused by underlying mantle plumes – localizedhot upwellings from deep inside the Earth. It is still uncertain, whether all plumes or justsome of them rise from the lowermost mantle, and to what extent and where theyentrain ...
Steinberger, B., Steinberger, A.
openaire   +3 more sources

Mantle plumes and their role in Earth processes

Nature Reviews Earth & Environment, 2021
The existence of mantle plumes was first proposed in the 1970s to explain intra-plate, hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical images and discrepancies in interpretations of geochemical and ...
Joanne Whittaker, Dietmar Müller, Bernhard Steinberger   +2 more
exaly   +3 more sources

On predicting mantle mushroom plumes [PDF]

Geoscience Frontiers, 2011
This study investigates the mechanism of formation of convection plumes of mushroom shape in sub-solidus mantle and their prediction. The seismic-tomographic images of columnar structures of several hundreds kilometers in diameter have been reported by ...
Rex B Thorpe
exaly   +2 more sources

Influences on the positioning of mantle plumes following supercontinent formation [PDF]

Journal of Geophysical Research: Solid Earth, 2015
Several mantle convection studies analyzing the effects of supercontinent formation and dispersal show that the genesis of subcontinental plumes results from the formation of subduction zones at the edges of the supercontinent rather than from the effect
Philip Heron, Julian Lowman
exaly   +2 more sources

MANTLE PLUMES AND HOT SPOTS

2005
Verlag. McElhinny MW (1973) Paleomagnetization and Plate Tectonics. Cambridge: Cambridge University Press. McElhinny MWand McFadden PL (2000) Paleomagnetization: Continents and Oceans. San Diego: Academic Press. Opdyke ND and Channell JET (1996) Magnetic Stratigraphy. San Diego: Academic Press. Tarling DH (1983) Paleomagnetization.
Suetsugu, D., Steinberger, B., Kogiso, T.   +2 more
openaire   +5 more sources

Mantle Plumes and Continental Tectonics

Science, 1992
Mantle plumes and plate tectonics, the result of two distinct modes of convection within the Earth, operate largely independently. Although plumes are secondary in terms of heat transport, they have probably played an important role in continental geology.
R I, Hill, I H, Campbell, G F, Davies, R W, Griffiths   +3 more
openaire   +2 more sources