Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023285423> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2023285423 endingPage "93" @default.
- W2023285423 startingPage "81" @default.
- W2023285423 abstract "40K-40Ar ages (27 new ones) and geochemical data (major and trace elements) allow the recognition of four main magmatic events in Central Sulawesi (South of Palu and in the Toraja area). The oldes magmatic activity took place during Late Eocene and Oligocene, and led to the emplacement of island arc tholeiites and calc-alkaline magmas as intrusions cutting the Tinombo Formation near Donggala (34.5 My) and the Kambuno granitic body in the Toraja area (29.9 My). The Lamasi Volcanics followed, but their KAr ages, which range from 33 to 15 My, cannot be safely interpreted as magmatic ages. They have a MORB-type affinity, flat to slightly depleted incompatible trace-element patterns and Nb and Ta negative anomalies indicative of their BABB affinity. Their origin and mode of emplacement are still enigmatic. Then an important magmatic event, with a strong shoshonitic affinity, occurred in a short time interval (10.1−11.9 My), leading to the emplacement of intrusions cross-cutting the Mamasa and Kambuno granitic bodies and to the eruption of lava flows (Sekata, Talaya and Sesean Volcanics). This shoshonitic episode is probably equivalent to the post-subduction magmatic associations emplaced in South Sulawesi during the late Miocene and might derive from the melting of mantle material after the mantle was metasomatised during a former episode of subduction. The last magmatic event occurred between 6.5 and 0.6 Ma. The corresponding products are granitic rocks (Kulawi, Kamarora, Palopo), rhyolites (Gimpu, 1.9 My) and widely distributed rhyolitic pyroclastics known as the Barupu tuff (0.6 Ma). All these magmatic rocks are characterised by their K-rich calc-alkaline composition, by the lack of basaltic and intermediate magmas (SiO2 > 60%) and by high enrichments in incompatible elements a radiogenic Sr isotopic signature. This is consistent with the hypothesis of a strong crustal imprint by melting of an underthrusted continental crust in a collisional context." @default.
- W2023285423 created "2016-06-24" @default.
- W2023285423 creator A5005599325 @default.
- W2023285423 creator A5029099907 @default.
- W2023285423 creator A5033398966 @default.
- W2023285423 creator A5061441545 @default.
- W2023285423 creator A5077566853 @default.
- W2023285423 creator A5084000556 @default.
- W2023285423 creator A5090702630 @default.
- W2023285423 date "1994-01-01" @default.
- W2023285423 modified "2023-10-01" @default.
- W2023285423 title "Tertiary and quaternary magmatism in Central Sulawesi: Chronological and petrological constraints" @default.
- W2023285423 cites W1976658366 @default.
- W2023285423 cites W1985036513 @default.
- W2023285423 cites W1998805779 @default.
- W2023285423 cites W1999818536 @default.
- W2023285423 cites W2000879528 @default.
- W2023285423 cites W2023044218 @default.
- W2023285423 cites W2072010233 @default.
- W2023285423 cites W2081673195 @default.
- W2023285423 cites W2090457820 @default.
- W2023285423 cites W2326484271 @default.
- W2023285423 doi "https://doi.org/10.1016/0743-9547(94)90067-1" @default.
- W2023285423 hasPublicationYear "1994" @default.
- W2023285423 type Work @default.
- W2023285423 sameAs 2023285423 @default.
- W2023285423 citedByCount "44" @default.
- W2023285423 countsByYear W20232854232012 @default.
- W2023285423 countsByYear W20232854232013 @default.
- W2023285423 countsByYear W20232854232014 @default.
- W2023285423 countsByYear W20232854232016 @default.
- W2023285423 countsByYear W20232854232017 @default.
- W2023285423 countsByYear W20232854232018 @default.
- W2023285423 countsByYear W20232854232019 @default.
- W2023285423 countsByYear W20232854232020 @default.
- W2023285423 countsByYear W20232854232022 @default.
- W2023285423 crossrefType "journal-article" @default.
- W2023285423 hasAuthorship W2023285423A5005599325 @default.
- W2023285423 hasAuthorship W2023285423A5029099907 @default.
- W2023285423 hasAuthorship W2023285423A5033398966 @default.
- W2023285423 hasAuthorship W2023285423A5061441545 @default.
- W2023285423 hasAuthorship W2023285423A5077566853 @default.
- W2023285423 hasAuthorship W2023285423A5084000556 @default.
- W2023285423 hasAuthorship W2023285423A5090702630 @default.
- W2023285423 hasConcept C120806208 @default.
- W2023285423 hasConcept C127313418 @default.
- W2023285423 hasConcept C151730666 @default.
- W2023285423 hasConcept C162973429 @default.
- W2023285423 hasConcept C17409809 @default.
- W2023285423 hasConcept C192241223 @default.
- W2023285423 hasConcept C25822816 @default.
- W2023285423 hasConcept C58097730 @default.
- W2023285423 hasConcept C67236022 @default.
- W2023285423 hasConcept C77928131 @default.
- W2023285423 hasConcept C95869378 @default.
- W2023285423 hasConceptScore W2023285423C120806208 @default.
- W2023285423 hasConceptScore W2023285423C127313418 @default.
- W2023285423 hasConceptScore W2023285423C151730666 @default.
- W2023285423 hasConceptScore W2023285423C162973429 @default.
- W2023285423 hasConceptScore W2023285423C17409809 @default.
- W2023285423 hasConceptScore W2023285423C192241223 @default.
- W2023285423 hasConceptScore W2023285423C25822816 @default.
- W2023285423 hasConceptScore W2023285423C58097730 @default.
- W2023285423 hasConceptScore W2023285423C67236022 @default.
- W2023285423 hasConceptScore W2023285423C77928131 @default.
- W2023285423 hasConceptScore W2023285423C95869378 @default.
- W2023285423 hasIssue "1-2" @default.
- W2023285423 hasLocation W20232854231 @default.
- W2023285423 hasOpenAccess W2023285423 @default.
- W2023285423 hasPrimaryLocation W20232854231 @default.
- W2023285423 hasRelatedWork W1491073723 @default.
- W2023285423 hasRelatedWork W1971170662 @default.
- W2023285423 hasRelatedWork W1985079988 @default.
- W2023285423 hasRelatedWork W2007979873 @default.
- W2023285423 hasRelatedWork W2011680813 @default.
- W2023285423 hasRelatedWork W2063732053 @default.
- W2023285423 hasRelatedWork W2156068745 @default.
- W2023285423 hasRelatedWork W4223649517 @default.
- W2023285423 hasRelatedWork W5989450 @default.
- W2023285423 hasRelatedWork W611997853 @default.
- W2023285423 hasVolume "9" @default.
- W2023285423 isParatext "false" @default.
- W2023285423 isRetracted "false" @default.
- W2023285423 magId "2023285423" @default.
- W2023285423 workType "article" @default.