FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1970111722> ?p ?o ?g. }

• W1970111722 endingPage "172" @default.
• W1970111722 startingPage "150" @default.
• W1970111722 abstract "The Central Zone of the Limpopo Belt (South Africa) underwent high-grade metamorphism at ∼2.7–2.5 and ∼2.03 Ga. Quartz-rich, garnet-, cordierite-, biotite- and orthoamphibole-bearing, feldspar-free gneisses from the western Central Zone reached granulite-facies conditions (∼800 °C at ∼8–10 kbar) followed by decompression. Garnet from one such sample shows significant zonation in trace elements but little zonation in major elements. Zoning patterns suggest that the early prograde breakdown of REE-rich accessory phases contributed to the garnet trace element budget. Monazite from the sample yields a SHRIMP weighted mean 207Pb–206Pb age of 2028 ± 3 Ma, indistinguishable from a SHRIMP zircon age of 2022 ± 11 Ma previously measured on metamorphic overgrowths on ∼2.69 Ga igneous zircon cores. New zircon and monazite formed before, or at, the metamorphic peak, and occur as inclusions in garnet. Monazite appears to have formed through the breakdown of early allanite ± xenotime ± apatite. Trace element zoning patterns in garnet and the age of accessory phases are most consistent with a single tectonometamorphic event at ∼2.03 Ga. The plagioclase and K-feldspar-free composition of the garnet–cordierite–orthoamphibole gneisses requires open system processes such as intense hydrothermal alteration of protoliths or advanced chemical weathering. In the studied sample, the ∼2.69 Ga igneous zircons show a prominent negative Eu anomaly, suggesting equilibrium with plagioclase, or plagioclase fractionation in the precursor magma. In contrast, the other minerals either show small negative (∼2.03 Ga monazite), no (∼2.02 Ga zircon and garnet) or positive Eu anomalies (orthoamphibole). This suggests that the unusual bulk compositions of these rocks were set in after ∼2.69 Ga but before the peak of the ∼2.03 Ga event, most probably while the protoliths resided at shallow or surficial crustal levels." @default.
• W1970111722 created "2016-06-24" @default.
• W1970111722 creator A5004126395 @default.
• W1970111722 creator A5012370500 @default.
• W1970111722 creator A5026677062 @default.
• W1970111722 creator A5071033204 @default.
• W1970111722 creator A5085825108 @default.
• W1970111722 date "2006-05-01" @default.
• W1970111722 modified "2023-10-16" @default.
• W1970111722 title "A SHRIMP U–Pb and LA-ICP-MS trace element study of the petrogenesis of garnet–cordierite–orthoamphibole gneisses from the Central Zone of the Limpopo Belt, South Africa" @default.
• W1970111722 cites W1521262137 @default.
• W1970111722 cites W1944113931 @default.
• W1970111722 cites W1963816302 @default.
• W1970111722 cites W1969859799 @default.
• W1970111722 cites W1971333387 @default.
• W1970111722 cites W1985048272 @default.
• W1970111722 cites W1989451998 @default.
• W1970111722 cites W1993307882 @default.
• W1970111722 cites W1996425609 @default.
• W1970111722 cites W2013184978 @default.
• W1970111722 cites W2020139762 @default.
• W1970111722 cites W2024436619 @default.
• W1970111722 cites W2032047288 @default.
• W1970111722 cites W2032975395 @default.
• W1970111722 cites W2033324773 @default.
• W1970111722 cites W2034559901 @default.
• W1970111722 cites W2040824030 @default.
• W1970111722 cites W2042445838 @default.
• W1970111722 cites W2048731492 @default.
• W1970111722 cites W2057989474 @default.
• W1970111722 cites W2066780082 @default.
• W1970111722 cites W2068705742 @default.
• W1970111722 cites W2073012350 @default.
• W1970111722 cites W2075666876 @default.
• W1970111722 cites W2078758544 @default.
• W1970111722 cites W2089053123 @default.
• W1970111722 cites W2091458294 @default.
• W1970111722 cites W2091601047 @default.
• W1970111722 cites W2096780527 @default.
• W1970111722 cites W2127236625 @default.
• W1970111722 cites W2128383999 @default.
• W1970111722 cites W2129991283 @default.
• W1970111722 cites W2131633408 @default.
• W1970111722 cites W2145604970 @default.
• W1970111722 cites W2150712600 @default.
• W1970111722 cites W2161090395 @default.
• W1970111722 cites W2163483763 @default.
• W1970111722 cites W2171647512 @default.
• W1970111722 cites W2273096495 @default.
• W1970111722 cites W2317096966 @default.
• W1970111722 cites W2318651267 @default.
• W1970111722 doi "https://doi.org/10.1016/j.lithos.2005.09.001" @default.
• W1970111722 hasPublicationYear "2006" @default.
• W1970111722 type Work @default.
• W1970111722 sameAs 1970111722 @default.
• W1970111722 citedByCount "133" @default.
• W1970111722 countsByYear W19701117222012 @default.
• W1970111722 countsByYear W19701117222013 @default.
• W1970111722 countsByYear W19701117222014 @default.
• W1970111722 countsByYear W19701117222015 @default.
• W1970111722 countsByYear W19701117222016 @default.
• W1970111722 countsByYear W19701117222017 @default.
• W1970111722 countsByYear W19701117222018 @default.
• W1970111722 countsByYear W19701117222019 @default.
• W1970111722 countsByYear W19701117222020 @default.
• W1970111722 countsByYear W19701117222021 @default.
• W1970111722 countsByYear W19701117222022 @default.
• W1970111722 countsByYear W19701117222023 @default.
• W1970111722 crossrefType "journal-article" @default.
• W1970111722 hasAuthorship W1970111722A5004126395 @default.
• W1970111722 hasAuthorship W1970111722A5012370500 @default.
• W1970111722 hasAuthorship W1970111722A5026677062 @default.
• W1970111722 hasAuthorship W1970111722A5071033204 @default.
• W1970111722 hasAuthorship W1970111722A5085825108 @default.
• W1970111722 hasConcept C109007969 @default.
• W1970111722 hasConcept C112764850 @default.
• W1970111722 hasConcept C114793014 @default.
• W1970111722 hasConcept C127313418 @default.
• W1970111722 hasConcept C146588470 @default.
• W1970111722 hasConcept C151730666 @default.
• W1970111722 hasConcept C161509811 @default.
• W1970111722 hasConcept C171701179 @default.
• W1970111722 hasConcept C17409809 @default.
• W1970111722 hasConcept C18142444 @default.
• W1970111722 hasConcept C26687426 @default.
• W1970111722 hasConcept C2776212575 @default.
• W1970111722 hasConcept C2778571990 @default.
• W1970111722 hasConcept C2778849375 @default.
• W1970111722 hasConcept C2779181077 @default.
• W1970111722 hasConcept C2779870107 @default.
• W1970111722 hasConcept C42787717 @default.
• W1970111722 hasConcept C79572550 @default.
• W1970111722 hasConcept C95628711 @default.
• W1970111722 hasConceptScore W1970111722C109007969 @default.
• W1970111722 hasConceptScore W1970111722C112764850 @default.
• W1970111722 hasConceptScore W1970111722C114793014 @default.
• W1970111722 hasConceptScore W1970111722C127313418 @default.
• W1970111722 hasConceptScore W1970111722C146588470 @default.

• next