FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2084932008> ?p ?o ?g. }

• W2084932008 endingPage "270" @default.
• W2084932008 startingPage "256" @default.
• W2084932008 abstract "Tectonic setting of the ca. 840–760 Ma Imorona-Itsindro Suite throughout central Madagascar is critical to understanding Madagascar-India correlation in pre-Gondwana time and the paleogeography of the rifting Rodinia. Here, we present new geochronological and geochemical data for gabbros of this suite from the Ambatondrazaka area in east-central Madagascar. SIMS U-Pb zircon dating reveals that the gabbros emplaced between ca. 797 and 772 Ma. They define a typical tholeiitic trend on the AFM and FeOT/MgO vs. SiO2 plots, which is confirmed by the occurrence of layered Fe-Ti-V oxide mineralization. Owing to the high-K nature, they were previously misinterpreted as a “calc-alkaline” association produced in a mature continental arc. Indeed, it implies in return an intra-plate affinity for tholeiitic rocks. Their high Zr/Y, La/Y and Ti/V ratios differ from those of typical arc and back-arc mafic suites but are compatible with an intra-plate setting. Additionally, they are characterized by low AlZ/TiO2 ratios in clinopyroxene, further supporting an intra-plate environment. The negative ɛNd(t) (−8.4 to −5.1) and zircon ɛHf(t) (−6.84 to −3.08) values, together with enriched trace element signatures, indicate their derivation from an enriched lithospheric mantle source. Considering the initial 87Sr/86Sr ratios (0.705409–0.706892) and Nd modal ages (∼2.1–2.4 Ga), we postulate that this mantle reservoir has EM1-type isotopic characteristics and was enriched by a Late Neoarchean “super accretion event”. Taken together, our results question the existence of the Betsimisaraka Suture but support the proposal that the Malagasy Shield and the Dharwar Craton of India are parts of the same entity – the Greater Dharwar Craton. Within this framework, the widely cited hypothesis that an extensive Andean-type arc was developed along the northwestern margin of the rifting Rodinia is challenged, at least that the magmatic arc did not extend to the Malagasy Shield." @default.
• W2084932008 created "2016-06-24" @default.
• W2084932008 creator A5002119406 @default.
• W2084932008 creator A5027079672 @default.
• W2084932008 creator A5028814238 @default.
• W2084932008 creator A5045248354 @default.
• W2084932008 creator A5048277355 @default.
• W2084932008 creator A5059747702 @default.
• W2084932008 date "2015-01-01" @default.
• W2084932008 modified "2023-10-14" @default.
• W2084932008 title "Geochronology and geochemistry of Cryogenian gabbros from the Ambatondrazaka area, east-central Madagascar: Implications for Madagascar-India correlation and Rodinia paleogeography" @default.
• W2084932008 cites W1568063242 @default.
• W2084932008 cites W1662564065 @default.
• W2084932008 cites W1964058583 @default.
• W2084932008 cites W1964909252 @default.
• W2084932008 cites W1965679011 @default.
• W2084932008 cites W1967910599 @default.
• W2084932008 cites W1969379181 @default.
• W2084932008 cites W1975468902 @default.
• W2084932008 cites W1978993965 @default.
• W2084932008 cites W1983512859 @default.
• W2084932008 cites W1983567888 @default.
• W2084932008 cites W1983765861 @default.
• W2084932008 cites W1997894683 @default.
• W2084932008 cites W2000168556 @default.
• W2084932008 cites W2001772043 @default.
• W2084932008 cites W2004253167 @default.
• W2084932008 cites W2007105153 @default.
• W2084932008 cites W2008622814 @default.
• W2084932008 cites W2009251618 @default.
• W2084932008 cites W2013503841 @default.
• W2084932008 cites W2016390835 @default.
• W2084932008 cites W2021987309 @default.
• W2084932008 cites W2023676960 @default.
• W2084932008 cites W2024575502 @default.
• W2084932008 cites W2025139419 @default.
• W2084932008 cites W2026299727 @default.
• W2084932008 cites W2028864600 @default.
• W2084932008 cites W2039872199 @default.
• W2084932008 cites W2043989957 @default.
• W2084932008 cites W2044911484 @default.
• W2084932008 cites W2047274210 @default.
• W2084932008 cites W2048240400 @default.
• W2084932008 cites W2048952741 @default.
• W2084932008 cites W2053395903 @default.
• W2084932008 cites W2054590577 @default.
• W2084932008 cites W2059251941 @default.
• W2084932008 cites W2059931501 @default.
• W2084932008 cites W2060082277 @default.
• W2084932008 cites W2060289092 @default.
• W2084932008 cites W2062218969 @default.
• W2084932008 cites W2063011872 @default.
• W2084932008 cites W2071425642 @default.
• W2084932008 cites W2071822368 @default.
• W2084932008 cites W2072800705 @default.
• W2084932008 cites W2078553842 @default.
• W2084932008 cites W2078992461 @default.
• W2084932008 cites W2081561105 @default.
• W2084932008 cites W2081673195 @default.
• W2084932008 cites W2083934538 @default.
• W2084932008 cites W2087593865 @default.
• W2084932008 cites W2087611505 @default.
• W2084932008 cites W2088934051 @default.
• W2084932008 cites W2096616322 @default.
• W2084932008 cites W2098150726 @default.
• W2084932008 cites W2112435406 @default.
• W2084932008 cites W2113897867 @default.
• W2084932008 cites W2115054621 @default.
• W2084932008 cites W2118187107 @default.
• W2084932008 cites W2119802751 @default.
• W2084932008 cites W2124559878 @default.
• W2084932008 cites W2137543000 @default.
• W2084932008 cites W2142800396 @default.
• W2084932008 cites W2145191782 @default.
• W2084932008 cites W2146117929 @default.
• W2084932008 cites W2150972039 @default.
• W2084932008 cites W2163806702 @default.
• W2084932008 cites W2164517911 @default.
• W2084932008 cites W2316633540 @default.
• W2084932008 cites W2325019720 @default.
• W2084932008 cites W4245638129 @default.
• W2084932008 doi "https://doi.org/10.1016/j.precamres.2014.11.005" @default.
• W2084932008 hasPublicationYear "2015" @default.
• W2084932008 type Work @default.
• W2084932008 sameAs 2084932008 @default.
• W2084932008 citedByCount "24" @default.
• W2084932008 countsByYear W20849320082015 @default.
• W2084932008 countsByYear W20849320082016 @default.
• W2084932008 countsByYear W20849320082017 @default.
• W2084932008 countsByYear W20849320082018 @default.
• W2084932008 countsByYear W20849320082020 @default.
• W2084932008 countsByYear W20849320082021 @default.
• W2084932008 countsByYear W20849320082022 @default.
• W2084932008 countsByYear W20849320082023 @default.
• W2084932008 crossrefType "journal-article" @default.
• W2084932008 hasAuthorship W2084932008A5002119406 @default.
• W2084932008 hasAuthorship W2084932008A5027079672 @default.
• W2084932008 hasAuthorship W2084932008A5028814238 @default.

• next