Emplacement and thermal effect of post-collisional Chewo Pluton (Arabian-Nubian Shield); implication for late East-African Orogeny
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10408716" target="_blank" >RIV/00216208:11310/20:10408716 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/20:00518642 RIV/00025798:_____/20:00000019
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xji08u8NmA" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xji08u8NmA</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jafrearsci.2019.103695" target="_blank" >10.1016/j.jafrearsci.2019.103695</a>
Alternative languages
Result language
angličtina
Original language name
Emplacement and thermal effect of post-collisional Chewo Pluton (Arabian-Nubian Shield); implication for late East-African Orogeny
Original language description
The Chewo pluton built by pyroxene-amphibole to amphibole-biotite monzodiorite and quartz monzonite is a typical post-collisional intrusive body emplaced into a low-grade Neoproterozoic Tambien Group belonging to the Tokar-Barka Terrane in the southern Arabian-Nubian Shield. The pluton shows a high-K calc-alkaline and metaluminous composition with significant enrichment in both LREE and LILE due to hybridization and magma mixing between crustal and mantle-derived melts. Estimated P-T conditions of quartz monzonite magma solidification at T: 703 +/- 23 degrees C and P: 0.32 +/- 0.08 GPa and thermal overprint in the pluton aureole at T: -200-755 degrees C and P: 0.28 +/- 0.06 GPa indicate that the Chewo pluton intruded at a depth of between ca. 10-13 km. The Chewo Pluton was emplaced diapirically, which was driven by a local extension in the hinge of the large-scale asymmetric syncline during the last increments of regional deformation - orogen-perpendicular WNW(NW)-ESE(SE) compression. It indicates that the regional WNW(NW)-ESE(SE) shortening is the main geodynamic event of the East African Orogen in the upper-crustal Tokar-Barka Terrane resulting in the assembly of the eastern and western Gondwana continents. In concordance, the zircon U/Pb age of the Chewo pluton (618.1 +/- 1.5 Ma) provides the upper limit for the regional deformation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GF15-34621L" target="_blank" >GF15-34621L: Post-collisional plutonism in the south-western Bohemian Massif</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of African Earth Sciences
ISSN
1464-343X
e-ISSN
—
Volume of the periodical
162
Issue of the periodical within the volume
Únor 2020
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
103695
UT code for WoS article
000509618000021
EID of the result in the Scopus database
2-s2.0-85075783173