The diversity of sources of late Archean granites reflects a transition from plume-dominated to plate tectonics in the Superior Province, Canada
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10455968" target="_blank" >RIV/00216208:11310/22:10455968 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/22:00551788 RIV/00025798:_____/22:00000037
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=T3JZssydYo" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=T3JZssydYo</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.precamres.2021.106525" target="_blank" >10.1016/j.precamres.2021.106525</a>
Alternative languages
Result language
angličtina
Original language name
The diversity of sources of late Archean granites reflects a transition from plume-dominated to plate tectonics in the Superior Province, Canada
Original language description
The Superior Province in Canada represents an excellent natural laboratory to test various models of crustal growth and evaluate tectonic regimes during the late Archean. Here, we present new geochemical and geochronological data for ca. 2.8-2.7 Ga plutons intruding different lithotectonic units of the north-eastern part of the Superior Province that demonstrate a complex nature and evolution of magma sources in relation to a changing tectonic setting. Four distinct plutonic suites were newly identified: (1) sodic tonalite-diorite (TD) with a composition resembling low-pressure TTG-like melts, (2) sodic tonalite-granodiorite-diorite (TGD) with medium/high-pressure TTG-like signatures, (3) Mg-K-rich monzogranite to monzodiorite (sanukitoids; MMD), and (4) K-rich granodiorite-granite-monzogranite (GGM). These suites are interpreted as recording a temporal evolution from plume-assisted melting of lower mafic continental crust through melting of a subducted oceanic slab at different depths to large-scale re-melting of the previously formed and amalgamated crustal units. In this evolutionary scheme, the approx. 2730-2700 Ma subduction-related plutonism is the most voluminous addition of the juvenile arc material and thus represents the most significant crustal growth event. Altogether, the above inferences and published data suggest that the late Archean plutonism in the Superior Province formed during a transitional regime from plume-dominated to plate-tectonic over a short time span between approx 2730 and approx. 2700 Ma and that this transition was markedly diachronous across the Province.
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
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA19-08066S" target="_blank" >GA19-08066S: Late Archean granites: markers of modern-style plate tectonics?</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Precambrian Research
ISSN
0301-9268
e-ISSN
1872-7433
Volume of the periodical
370
Issue of the periodical within the volume
March
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
20
Pages from-to
106525
UT code for WoS article
000788102200002
EID of the result in the Scopus database
2-s2.0-85122672313