Matches in SemOpenAlex for { <https://semopenalex.org/work/W4255536162> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W4255536162 endingPage "v" @default.
- W4255536162 startingPage "v" @default.
- W4255536162 abstract "The position of ancient (Paleo) suture zones in the crystalline basement of Madagascar is still the subject of debate. The Ianapera area is part of the Neoproterozoic Vohibory domain, which covers the northern part of the Ampanihy High-Strain Zone (HSZ), in the southwestern part of the basement. By combining Landsat 7 ETM+, airborne magnetic and radiometric data as well as available maps and data, with new field, geochemical and geochronological data in a GIS, we have updated the geological map of this region to investigate a supposed suture in this area. We suggest that the proposed suture in SW Madagascar is a NNE–SSW major lineament, rather than the 20 km-wide Ampanihy HSZ. The lineament separates the Vohibory high-pressure granulites from the older Androyan medium-pressure granulites, and can be outlined from the Ianapera area to the Ampanihy region towards the south; accordingly, we named it the Ianapera-Ampanihy Suture. Based on field, geophysical and geochemical data, we recognised a suite of granites and syenites, which we named the Ianapera suite, and a small sheet-like body of granodiorite (Bevaro granodiorite). The Ianapera suite contains the only known occurrence of corundum-bearing syenite in the Madagascar basement. These bodies were formed by two distinct episodes of felsic magmatism: respectively, high-K calc-alkaline to shoshonitic, and low-K calc-alkaline pulses. The composition, mineralogy, as well as a U–Th–Pb monazite age of 540 ± 22 Ma, is consistent with late to post-collisional emplacement of the Ianapera suite, reinforcing the hypothesis of a suture in this area. Based on the above data, we suggest a northwards continuation of this suture in Kenya, as far as the intrusive-hosted Dusi corundum deposit (Simonet et al., 2004). The Ianapera-Ampanihy Suture could be the major tectonic boundary suggested as the eastern margin of the Mozambique belt, within the central East African Orogen." @default.
- W4255536162 created "2022-05-12" @default.
- W4255536162 creator A5029601836 @default.
- W4255536162 creator A5071208066 @default.
- W4255536162 creator A5073597371 @default.
- W4255536162 date "1992-11-01" @default.
- W4255536162 modified "2023-09-28" @default.
- W4255536162 title "Preface" @default.
- W4255536162 doi "https://doi.org/10.1016/0168-9002(92)91188-f" @default.
- W4255536162 hasPublicationYear "1992" @default.
- W4255536162 type Work @default.
- W4255536162 citedByCount "0" @default.
- W4255536162 crossrefType "journal-article" @default.
- W4255536162 hasAuthorship W4255536162A5029601836 @default.
- W4255536162 hasAuthorship W4255536162A5071208066 @default.
- W4255536162 hasAuthorship W4255536162A5073597371 @default.
- W4255536162 hasConcept C105702510 @default.
- W4255536162 hasConcept C109007969 @default.
- W4255536162 hasConcept C114793014 @default.
- W4255536162 hasConcept C127313418 @default.
- W4255536162 hasConcept C146588470 @default.
- W4255536162 hasConcept C151730666 @default.
- W4255536162 hasConcept C162973429 @default.
- W4255536162 hasConcept C166957645 @default.
- W4255536162 hasConcept C167284885 @default.
- W4255536162 hasConcept C17409809 @default.
- W4255536162 hasConcept C18142444 @default.
- W4255536162 hasConcept C193429443 @default.
- W4255536162 hasConcept C205649164 @default.
- W4255536162 hasConcept C2776212575 @default.
- W4255536162 hasConcept C2777327002 @default.
- W4255536162 hasConcept C2778849375 @default.
- W4255536162 hasConcept C2781297371 @default.
- W4255536162 hasConcept C35240230 @default.
- W4255536162 hasConcept C71924100 @default.
- W4255536162 hasConcept C77928131 @default.
- W4255536162 hasConcept C82586738 @default.
- W4255536162 hasConcept C92596616 @default.
- W4255536162 hasConceptScore W4255536162C105702510 @default.
- W4255536162 hasConceptScore W4255536162C109007969 @default.
- W4255536162 hasConceptScore W4255536162C114793014 @default.
- W4255536162 hasConceptScore W4255536162C127313418 @default.
- W4255536162 hasConceptScore W4255536162C146588470 @default.
- W4255536162 hasConceptScore W4255536162C151730666 @default.
- W4255536162 hasConceptScore W4255536162C162973429 @default.
- W4255536162 hasConceptScore W4255536162C166957645 @default.
- W4255536162 hasConceptScore W4255536162C167284885 @default.
- W4255536162 hasConceptScore W4255536162C17409809 @default.
- W4255536162 hasConceptScore W4255536162C18142444 @default.
- W4255536162 hasConceptScore W4255536162C193429443 @default.
- W4255536162 hasConceptScore W4255536162C205649164 @default.
- W4255536162 hasConceptScore W4255536162C2776212575 @default.
- W4255536162 hasConceptScore W4255536162C2777327002 @default.
- W4255536162 hasConceptScore W4255536162C2778849375 @default.
- W4255536162 hasConceptScore W4255536162C2781297371 @default.
- W4255536162 hasConceptScore W4255536162C35240230 @default.
- W4255536162 hasConceptScore W4255536162C71924100 @default.
- W4255536162 hasConceptScore W4255536162C77928131 @default.
- W4255536162 hasConceptScore W4255536162C82586738 @default.
- W4255536162 hasConceptScore W4255536162C92596616 @default.
- W4255536162 hasIssue "3" @default.
- W4255536162 hasLocation W42555361621 @default.
- W4255536162 hasOpenAccess W4255536162 @default.
- W4255536162 hasPrimaryLocation W42555361621 @default.
- W4255536162 hasRelatedWork W1579723086 @default.
- W4255536162 hasRelatedWork W1997091312 @default.
- W4255536162 hasRelatedWork W2010793420 @default.
- W4255536162 hasRelatedWork W2014833745 @default.
- W4255536162 hasRelatedWork W2044909319 @default.
- W4255536162 hasRelatedWork W2065083018 @default.
- W4255536162 hasRelatedWork W2069025795 @default.
- W4255536162 hasRelatedWork W2153309547 @default.
- W4255536162 hasRelatedWork W2887496919 @default.
- W4255536162 hasRelatedWork W4255536162 @default.
- W4255536162 hasVolume "322" @default.
- W4255536162 isParatext "false" @default.
- W4255536162 isRetracted "false" @default.
- W4255536162 workType "article" @default.