Mantle rocks in East Antarctica
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F23%3A10167840" target="_blank" >RIV/00025798:_____/23:10167840 - isvavai.cz</a>
Result on the web
<a href="https://mem.lyellcollection.org/content/early/2021/06/02/M56-2020-8" target="_blank" >https://mem.lyellcollection.org/content/early/2021/06/02/M56-2020-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1144/M56-2020-8" target="_blank" >10.1144/M56-2020-8</a>
Alternative languages
Result language
angličtina
Original language name
Mantle rocks in East Antarctica
Original language description
Only three localities of mantle xenoliths are known from all of East Antarctica, occurring at the JettyPeninsula (Lambert-Amery Rift), Vestfold Hills and Gaussberg volcano. The latter two are spinelfaciesperidotites, whereas the Jetty Peninsula rocks also include garnet-spinel lherzolites; all comefrom Indo-Antarctica. The mantle xenoliths of Jetty Peninsula and Vestfold Hills contain abundantgeochemical and mineralogical evidence for multiple enrichment events that are attributed toinfiltration of melts and their fluid products. Many of these episodes are spatially related toprecursory activity along major trans-lithospheric structures that eventually led to the separation ofIndia from Antarctica. Mantle rocks also occur at Schirmacher Oasis (Dronning Maud Land) andHaskard Highlands (Shackleton Ranges) as blocks tectonically emplaced in high-grade crustal rocks.These show varying degrees of alteration due to reaction with silicic crustal rocks or hydrous fluids:none correspond to unchanged mantle compositions. Geophysical surveys are our only informationon the mantle lithosphere beneath the inland ice, and these can be used to infer the locations ofthicker lithosphere probably related to cratons by southward extrapolation of coastal geologicalcorrelations. Intense local modification of the mantle lithosphere by melt infiltration and fluidmovements may influence the large-scale images derived from geophysical data, and may beincorrectly interpreted as homogeneous compositions
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
The Antarctic mantle
ISBN
978-1-78620-467-7
Number of pages of the result
16
Pages from-to
17-32
Number of pages of the book
354
Publisher name
Geological Society of London
Place of publication
London
UT code for WoS chapter
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