FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2076242906> ?p ?o ?g. }

• W2076242906 endingPage "186" @default.
• W2076242906 startingPage "142" @default.
• W2076242906 abstract "High‐K volcanics were produced in two different Late Cretaceous cycles during the infilling of back‐arc basins of the eastern Pontides. The first cycle, represented by shoshonitic trachyandesites and associated pyroclastics, containing high K2O (2.74–4.81 wt‐%) and Na2O (3.60–5.51 wt‐%), overlies a mid‐Cretaceous ophiolitic‐olistostromal melange formed during the rifting stage of a back‐arc basin (Neotethys). 40Ar/39Ar dating of biotite from trachyandesite at the base of the first cyle indicates that shoshonitic volcanism in the far south of the eastern Pontides started in the early Campanian. Volcanic rocks of this cycle are overlain by upper Campanian‐Maastrichtian rudist‐bearing reefal limestones. The second cycle of high‐K volcanism is represented by analcime‐bearing volcanic rocks erupted in a Neotethyan lagoonal environment. These volcanic rocks, intercalated with continental detritus, are characterized by high Na2O (3.22–7.16 wt‐%), now concentrated in secondary analcime crystals. Their K2O contents also range between 0.83 and 6.05 (wt‐%). All of these units are disconformably overlain by Eocene turbidites with a basal conglomerate. Volcanic rocks belonging to both cycles show various enrichment degrees in LILE, HFSE, LREE, and HREE with respect to primitive mantle and chondrite [(La/Lu)CN = 11.10–25.89]. Negative Nb, Ta, Zr, Hf, and Ti anomalies are typical of these subduction‐related arc magmas. Geochemical similarities between the two volcanic cycles suggest that trachyandesites and analcime‐bearing volcanics were derived from similar enriched mantle sources, and that they formed in the same geotectonic setting of a back‐arc basin environment of the eastern Pontide magmatic arc during the Late Cretaceous. In addition, Nd‐Sr and Pb isotope ratios of the investigated volcanic units indicate that their mantle melt sources were similar. The new geological, geochemical and isotopic data suggest that southward subduction of the Palaeotethyan oceanic crust can be separated into two main stages for the late Mesozoic Pontide orogenic belt. Early southward subduction ended by slab break‐off during the mid‐Cretaceous, resulting in upwelling and injection of asthenospheric mantle that caused the opening of the eastern Pontide back‐arc basin (Neotethys). Resumption of southward subduction began with intense TH–CA bimodal volcanism in the northern front of the arc during the Turonian–Coniacian. The intensity of this Late Cretaceous magmatism in the north decreased towards the south, and a transition to monogenic calcalkaline–alkaline (CA–A) Campanian andesitic volcanism developed in the southern zone. Yet farther south, andesitic igneous activity graded into the Campanian–Maastrichtian shoshonitic and ultrapotassic volcanism in the Bayburt–Maden, Tokat, Amasya, and Gümüshaciköy areas. This zoning of the Late Cretaceous arc magmatism (TH–CA, CA–A and shoshonitic–ultrapotassic, from north to south) also supports the concept of southward subduction during late Mesozoic evolution of the eastern Mediterranean region." @default.
• W2076242906 created "2016-06-24" @default.
• W2076242906 creator A5085212655 @default.
• W2076242906 date "2009-06-03" @default.
• W2076242906 modified "2023-10-17" @default.
• W2076242906 title "Late Cretaceous high‐K volcanism in the eastern Pontide orogenic belt: implications for the geodynamic evolution of NE Turkey" @default.
• W2076242906 cites W1104249897 @default.
• W2076242906 cites W1967248360 @default.
• W2076242906 cites W1967552176 @default.
• W2076242906 cites W1968646608 @default.
• W2076242906 cites W1975515079 @default.
• W2076242906 cites W1979068537 @default.
• W2076242906 cites W1982160795 @default.
• W2076242906 cites W1986306211 @default.
• W2076242906 cites W1989767451 @default.
• W2076242906 cites W1991392138 @default.
• W2076242906 cites W1991591808 @default.
• W2076242906 cites W1994794055 @default.
• W2076242906 cites W1998983476 @default.
• W2076242906 cites W1999448338 @default.
• W2076242906 cites W2002457584 @default.
• W2076242906 cites W2004724861 @default.
• W2076242906 cites W2005878618 @default.
• W2076242906 cites W2006835182 @default.
• W2076242906 cites W2011624602 @default.
• W2076242906 cites W2014506930 @default.
• W2076242906 cites W2014608018 @default.
• W2076242906 cites W2018178738 @default.
• W2076242906 cites W2024814277 @default.
• W2076242906 cites W2031293650 @default.
• W2076242906 cites W2036486985 @default.
• W2076242906 cites W2039781072 @default.
• W2076242906 cites W2040227616 @default.
• W2076242906 cites W2045594539 @default.
• W2076242906 cites W2047567126 @default.
• W2076242906 cites W2057128748 @default.
• W2076242906 cites W2057588685 @default.
• W2076242906 cites W2058883458 @default.
• W2076242906 cites W2059439193 @default.
• W2076242906 cites W2060088117 @default.
• W2076242906 cites W2068921463 @default.
• W2076242906 cites W2069402922 @default.
• W2076242906 cites W2071538549 @default.
• W2076242906 cites W2074141659 @default.
• W2076242906 cites W2081433597 @default.
• W2076242906 cites W2082962229 @default.
• W2076242906 cites W2083355627 @default.
• W2076242906 cites W2083570099 @default.
• W2076242906 cites W2089125372 @default.
• W2076242906 cites W2095124531 @default.
• W2076242906 cites W2096663118 @default.
• W2076242906 cites W2096707152 @default.
• W2076242906 cites W2097622004 @default.
• W2076242906 cites W2099634457 @default.
• W2076242906 cites W2100015756 @default.
• W2076242906 cites W2104837834 @default.
• W2076242906 cites W2108425616 @default.
• W2076242906 cites W2109173312 @default.
• W2076242906 cites W2127639047 @default.
• W2076242906 cites W2144461623 @default.
• W2076242906 cites W2160856860 @default.
• W2076242906 cites W2165368569 @default.
• W2076242906 cites W2170308521 @default.
• W2076242906 cites W2171737953 @default.
• W2076242906 cites W4205749704 @default.
• W2076242906 cites W4206399056 @default.
• W2076242906 cites W4247998004 @default.
• W2076242906 cites W93469224 @default.
• W2076242906 doi "https://doi.org/10.1080/00206810902757164" @default.
• W2076242906 hasPublicationYear "2009" @default.
• W2076242906 type Work @default.
• W2076242906 sameAs 2076242906 @default.
• W2076242906 citedByCount "95" @default.
• W2076242906 countsByYear W20762429062012 @default.
• W2076242906 countsByYear W20762429062013 @default.
• W2076242906 countsByYear W20762429062014 @default.
• W2076242906 countsByYear W20762429062015 @default.
• W2076242906 countsByYear W20762429062016 @default.
• W2076242906 countsByYear W20762429062017 @default.
• W2076242906 countsByYear W20762429062018 @default.
• W2076242906 countsByYear W20762429062019 @default.
• W2076242906 countsByYear W20762429062020 @default.
• W2076242906 countsByYear W20762429062021 @default.
• W2076242906 countsByYear W20762429062022 @default.
• W2076242906 countsByYear W20762429062023 @default.
• W2076242906 crossrefType "journal-article" @default.
• W2076242906 hasAuthorship W2076242906A5085212655 @default.
• W2076242906 hasConcept C120806208 @default.
• W2076242906 hasConcept C12294951 @default.
• W2076242906 hasConcept C127313418 @default.
• W2076242906 hasConcept C151730666 @default.
• W2076242906 hasConcept C17409809 @default.
• W2076242906 hasConcept C180492444 @default.
• W2076242906 hasConcept C192241223 @default.
• W2076242906 hasConcept C2777229588 @default.
• W2076242906 hasConcept C2779870107 @default.
• W2076242906 hasConcept C58097730 @default.
• W2076242906 hasConcept C77928131 @default.

• next