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单词 asthenosphere
释义
asthenosphere
noun
geologyspecialized
uk
/æsˈθiː.nə.sfɪər/us
/æsˈθiː.nə.sfɪr/
the asthenosphere
[S]
thethin,almostliquid,layerunder the hardrockthatformstheouterlayerof theearth:
Moltenmaterialonlyformsasmallproportionof the asthenosphere.
The asthenosphereformstheinnerpartof theuppermantle.
Compare
theatmosphere
biosphere
exosphere
hydrosphere
ionosphere
lithosphere
mesosphere
stratosphere
thermosphere
troposphere
Related word
asthenospheric
More examples
  • Below the lithosphereliesthe asthenosphere.
  • The lithosphereessentiallyfloatson the asthenosphere.
  • The asthenospherebehaveslike a superheatedmaterialthat is in a semi-fluidic, plastic-likestate.
SMART Vocabulary: related words and phrases
Geology: types of rock
  • arenaceous
  • arenite
  • asthenospheric
  • basaltic
  • bioclastic
  • borax
  • chalk
  • emery
  • feldspar
  • flint
  • limestone
  • magma
  • marcasite
  • marl
  • marmoreal
  • metamorphic
  • pumice
  • pumice stone
  • scour
  • soapstone
See more results »
(Definition ofasthenospherefrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

asthenosphere| American Dictionary

asthenosphere
noun[U]
us
/ˌæsˈθi·nəˌsfɪər/
earth science
thethin,almostliquid,layerunder the hardrockthatformstheouterlayerof theearth
(Definition ofasthenospherefrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesofasthenosphere

asthenosphere
In continental rift settings, the emplacement of such large volumes of felsic melts requires a huge amount of mafic magma derived from uprisingasthenosphere.
From theCambridge English Corpus
Either of these mechanisms can cause the hotasthenosphereto rise close to the metasomatized lithosphere, initiating melting.
From theCambridge English Corpus
In particular, is the source of within-plate basaltic magmas in an extensional setting the lithosphere, convectingasthenosphereor both?
From theCambridge English Corpus
The extension of lithosphere accompanied with the upwelling ofasthenospheremay be the key factor for the coeval magmas with different sources.
From theCambridge English Corpus
We therefore favour the model whereby the eclogitic lower crust, together with the underlying lithospheric mantle, was delaminated, accompanied byasthenosphereupwelling.
From theCambridge English Corpus
However, the contribution ofasthenosphereto the generation of mafic magmatism would become ever greater along with the increase in extension of the lithosphere.
From theCambridge English Corpus
The second chapter discusses the lithosphere andasthenosphereand the important role water plays in defining the brittle and ductile behaviour of the rocks in these regions.
From theCambridge English Corpus
Temperatures high enough to produce basaltic partial melt in this decaying thermal anomaly would be located near the base of the lithosphere and in the immediately underlyingasthenosphere.
From theCambridge English Corpus
Several explanations have been proposed; a lower limit to the pliableasthenosphere, a phase transition, and most plausibly, depth-variation in the shear wave anisotropy.
From
Wikipedia
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It was found that theasthenospherehad invaded the overlying lithosphere.
From
Wikipedia
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Beneath the lithosphere is theasthenosphere, a relatively low-viscosity layer on which the lithosphere rides.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
The upwelling ofasthenosphereis not involved in the actual rifting process.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
The upward flow of theasthenosphereresults in decompression melting, magmatic underplating and some volcanism that may occur in the rift area.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
This decreasing in seismic waves velocity from lithosphere toasthenospherecould be caused by the presence of small percentage of melt in the asthenosphere.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
The steep dip angle of the subducting plate can correspond to a thicker wedge ofasthenosphereand therefore a greater source of fertile mantle material.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/asthenosphere##
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更新时间：2024/12/27 11:57:55