FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3166267781> ?p ?o ?g. }

• W3166267781 abstract "&lt;p&gt;The timing and kinematics of low-angle normal faulting in the Cyclades (Aegean region, Greece) has been a matter of debate, mainly because the detachments arch over the islands and only remnants of the fault systems and small klippen of hanging-wall rocks are preserved. The small (4.3 km&lt;sup&gt;2&lt;/sup&gt;) island of Agios Georgios, 20 km south of the Attica Peninsula, lies structurally above the West Cycladic Detachment System (WCDS). The island consists of metavolcanic greenschists and grey pelitic schists defined by an Ms+Chl+Ep/Czo+Ab&amp;#177;blue Amp assemblage. Zoned blue amphiboles occur both within albite porphyroclasts and the matrix in greenschists, and in pelitic schists. A locally strongly deformed granitoid dominates the east end of the island, which also contains zoned amphiboles (partly relict magmatic?), actinolite often replacing hornblende and two generations of white mica. The granitoid yields a zircon U-Pb date of 248.2 &amp;#177; 1.0 Ma (MSWD: 0.83) with Variscan inheritance. Dynamically recrystallized feldspar in both the granitoid and host rocks suggests upper greenschist to amphibolite facies conditions. The white mica in the host rock forms bundles that define an anastomosing foliation, and although strongly deformed in many parts, stretching lineations and shear-sense indicators show variable orientations. New &lt;sup&gt;40&lt;/sup&gt;Ar/&lt;sup&gt;39&lt;/sup&gt;Ar geochronology on the mica yields c. 60-47 Ma dates, and new zircon (U-Th)/He dates indicate cooling &lt;200&amp;#176;C at c. 21 Ma. The new geochronology and lack of a strong top-to-SW directed deformation, diagnostic of the WCDS, indicates that the island lies well above the detachment system.&lt;/p&gt;&lt;p&gt;Thirty km to the NNE, along a section perpendicular to the strike of the WCDS, lies the small (18.5 km&lt;sup&gt;2&lt;/sup&gt;) island of Makronisos, where the WCDS and the footwall are exposed. The island consists of greenschists and pelitic/graphitic schists with quartzites and blue-grey mylonitic marbles, and metabasites containing blue amphiboles. The structurally highest level consists of white to pale grey/reddish ultramylonites up to 40 m thick lying on the central ridge of the island and along the NE and NW coasts. Strongly clustered stretching lineations and macro-/microscopic shear-criteria indicate a top-to-SSW shear sense. Deformation mechanisms in quartz (LT-bulging) and calcite (recrystallization) indicate deformation at ~300&amp;#176;C. Albite porphyroclasts may preserve an older foliation and an earlier, higher grade metamorphism. This record is consistent with cooling during top-to-SSW deformation. New &lt;sup&gt;40&lt;/sup&gt;Ar/&lt;sup&gt;39&lt;/sup&gt;Ar analyses on white mica yield ages of 22-15 Ma, markedly younger than the ages from Ag. Georgios. Published zircon (U-Th)/He dates from the Western Cyclades footwall record cooling at 14-9 Ma. The relict status of the HP-mineral assemblages suggests Makronisos is part of the Lower Cycladic Blueschist Nappe (i.e. below the Trans Cycladic Thrust) and hence the ultramylonites are interpreted as the footwall of the early ductile high strain zone forming the WCDS. The older dates and distinctly different structural styles on Ag. Georgios indicate that as the hanging wall to the WCDS it is comparable to the Vari Unit on Syros, likely an extensional allochthon of the Pelagonian block.&lt;/p&gt;" @default.
• W3166267781 created "2021-06-22" @default.
• W3166267781 creator A5001719114 @default.
• W3166267781 creator A5004948928 @default.
• W3166267781 creator A5011146723 @default.
• W3166267781 creator A5013197929 @default.
• W3166267781 creator A5017618245 @default.
• W3166267781 creator A5039792717 @default.
• W3166267781 creator A5045803568 @default.
• W3166267781 creator A5050011886 @default.
• W3166267781 creator A5052268474 @default.
• W3166267781 creator A5082861743 @default.
• W3166267781 creator A5089249189 @default.
• W3166267781 date "2020-03-23" @default.
• W3166267781 modified "2023-09-25" @default.
• W3166267781 title "The Vari Unit in the hanging wall of the West Cycladic Detachment System (Agios Georgios, Greece): A small island with a big message" @default.
• W3166267781 doi "https://doi.org/10.5194/egusphere-egu2020-10753" @default.
• W3166267781 hasPublicationYear "2020" @default.
• W3166267781 type Work @default.
• W3166267781 sameAs 3166267781 @default.
• W3166267781 citedByCount "0" @default.
• W3166267781 crossrefType "posted-content" @default.
• W3166267781 hasAuthorship W3166267781A5001719114 @default.
• W3166267781 hasAuthorship W3166267781A5004948928 @default.
• W3166267781 hasAuthorship W3166267781A5011146723 @default.
• W3166267781 hasAuthorship W3166267781A5013197929 @default.
• W3166267781 hasAuthorship W3166267781A5017618245 @default.
• W3166267781 hasAuthorship W3166267781A5039792717 @default.
• W3166267781 hasAuthorship W3166267781A5045803568 @default.
• W3166267781 hasAuthorship W3166267781A5050011886 @default.
• W3166267781 hasAuthorship W3166267781A5052268474 @default.
• W3166267781 hasAuthorship W3166267781A5082861743 @default.
• W3166267781 hasAuthorship W3166267781A5089249189 @default.
• W3166267781 hasConcept C101139013 @default.
• W3166267781 hasConcept C109007969 @default.
• W3166267781 hasConcept C127313418 @default.
• W3166267781 hasConcept C146588470 @default.
• W3166267781 hasConcept C151730666 @default.
• W3166267781 hasConcept C171710264 @default.
• W3166267781 hasConcept C17409809 @default.
• W3166267781 hasConcept C26687426 @default.
• W3166267781 hasConcept C2779870107 @default.
• W3166267781 hasConcept C37045145 @default.
• W3166267781 hasConcept C4992710 @default.
• W3166267781 hasConcept C5900021 @default.
• W3166267781 hasConcept C79927612 @default.
• W3166267781 hasConcept C95628711 @default.
• W3166267781 hasConceptScore W3166267781C101139013 @default.
• W3166267781 hasConceptScore W3166267781C109007969 @default.
• W3166267781 hasConceptScore W3166267781C127313418 @default.
• W3166267781 hasConceptScore W3166267781C146588470 @default.
• W3166267781 hasConceptScore W3166267781C151730666 @default.
• W3166267781 hasConceptScore W3166267781C171710264 @default.
• W3166267781 hasConceptScore W3166267781C17409809 @default.
• W3166267781 hasConceptScore W3166267781C26687426 @default.
• W3166267781 hasConceptScore W3166267781C2779870107 @default.
• W3166267781 hasConceptScore W3166267781C37045145 @default.
• W3166267781 hasConceptScore W3166267781C4992710 @default.
• W3166267781 hasConceptScore W3166267781C5900021 @default.
• W3166267781 hasConceptScore W3166267781C79927612 @default.
• W3166267781 hasConceptScore W3166267781C95628711 @default.
• W3166267781 hasLocation W31662677811 @default.
• W3166267781 hasOpenAccess W3166267781 @default.
• W3166267781 hasPrimaryLocation W31662677811 @default.
• W3166267781 hasRelatedWork W16459261 @default.
• W3166267781 hasRelatedWork W21803719 @default.
• W3166267781 hasRelatedWork W25069215 @default.
• W3166267781 hasRelatedWork W28199432 @default.
• W3166267781 hasRelatedWork W35279391 @default.
• W3166267781 hasRelatedWork W37004422 @default.
• W3166267781 hasRelatedWork W3977717 @default.
• W3166267781 hasRelatedWork W56719329 @default.
• W3166267781 hasRelatedWork W61061131 @default.
• W3166267781 hasRelatedWork W12064859 @default.
• W3166267781 isParatext "false" @default.
• W3166267781 isRetracted "false" @default.
• W3166267781 magId "3166267781" @default.
• W3166267781 workType "article" @default.