Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean
The Kurancali ultramafic-mafic cumulate body, an allochthonous ophiolitic sliver in central Anatolia, is characterized by the presence of abundant hydrous phases (phlogopite, pargasite) besides augitic diopside, plagioclase, and accessory amounts of rutile, sphene, apatite, zircon, and calcite. Base...
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MINERALOGY AND PETROLOGY
2009
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Online Access: | https://hdl.handle.net/11511/31149 https://doi.org/10.1007/s00710-009-0044-7 |
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ftmetuankair:oai:https://open.metu.edu.tr:11511/31149 |
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ftmetuankair:oai:https://open.metu.edu.tr:11511/31149 2023-05-15T18:42:52+02:00 Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean Toksoy Köksal, Fatma Oberhaensli, Roland Göncüoğlu, Mehmet Cemal 2009-03-01 https://hdl.handle.net/11511/31149 https://doi.org/10.1007/s00710-009-0044-7 unknown MINERALOGY AND PETROLOGY KÖKSAL F., Oberhaensli R., GÖNCÜOĞLU M. C. , "Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean", MINERALOGY AND PETROLOGY, cilt.95, ss.273-290, 2009 doi:10.1007/s00710-009-0044-7 290 0930-0708 61349152285 273 https://hdl.handle.net/11511/31149 95 WOS:000264852000008 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Slab melt Lower crust Mariana arc Victoria land Layered complex Northern Pakistan Geochemical evidence Lithospheric processes Mantle wedge Anatolian crystalline complex Journal Article 2009 ftmetuankair https://doi.org/10.1007/s00710-009-0044-7 2020-12-11T12:09:47Z The Kurancali ultramafic-mafic cumulate body, an allochthonous ophiolitic sliver in central Anatolia, is characterized by the presence of abundant hydrous phases (phlogopite, pargasite) besides augitic diopside, plagioclase, and accessory amounts of rutile, sphene, apatite, zircon, and calcite. Based on modes of the essential minerals, the olivine-orthopyroxene-free cumulates are grouped as clinopyroxenite, hydrous clinopyroxenite, phlogopitite, hornblendite, layered gabbro, and diorite. Petrographical, mineralogical and geochemical features of the rocks infer crystallization from a hydrous magma having high-K calcalkaline affinity with slightly alkaline character, and point to metasomatised mantle as the magma source. Our evidence implies that the metasomatising component, which modified the composition of the mantle wedge source rock in an intraoceanic subduction zone, was a H2O, alkali and carbonate-rich aluminosilicate fluid and/or melt, probably derived from a subducted slab. We suggest that the metasomatic agents in the subarc mantle led to the generation of a hydrous magma, which produced the Kurancali cumulates in an island-arc basement in a supra-subduction-zone setting during the closure of the Izmir-Ankara-Erzincan branch of the Alpine Neotethys Ocean. Article in Journal/Newspaper Victoria Land OpenMETU (Middle East Technical University) Victoria Land Mineralogy and Petrology 95 3-4 273 290 |
institution |
Open Polar |
collection |
OpenMETU (Middle East Technical University) |
op_collection_id |
ftmetuankair |
language |
unknown |
topic |
Slab melt Lower crust Mariana arc Victoria land Layered complex Northern Pakistan Geochemical evidence Lithospheric processes Mantle wedge Anatolian crystalline complex |
spellingShingle |
Slab melt Lower crust Mariana arc Victoria land Layered complex Northern Pakistan Geochemical evidence Lithospheric processes Mantle wedge Anatolian crystalline complex Toksoy Köksal, Fatma Oberhaensli, Roland Göncüoğlu, Mehmet Cemal Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
topic_facet |
Slab melt Lower crust Mariana arc Victoria land Layered complex Northern Pakistan Geochemical evidence Lithospheric processes Mantle wedge Anatolian crystalline complex |
description |
The Kurancali ultramafic-mafic cumulate body, an allochthonous ophiolitic sliver in central Anatolia, is characterized by the presence of abundant hydrous phases (phlogopite, pargasite) besides augitic diopside, plagioclase, and accessory amounts of rutile, sphene, apatite, zircon, and calcite. Based on modes of the essential minerals, the olivine-orthopyroxene-free cumulates are grouped as clinopyroxenite, hydrous clinopyroxenite, phlogopitite, hornblendite, layered gabbro, and diorite. Petrographical, mineralogical and geochemical features of the rocks infer crystallization from a hydrous magma having high-K calcalkaline affinity with slightly alkaline character, and point to metasomatised mantle as the magma source. Our evidence implies that the metasomatising component, which modified the composition of the mantle wedge source rock in an intraoceanic subduction zone, was a H2O, alkali and carbonate-rich aluminosilicate fluid and/or melt, probably derived from a subducted slab. We suggest that the metasomatic agents in the subarc mantle led to the generation of a hydrous magma, which produced the Kurancali cumulates in an island-arc basement in a supra-subduction-zone setting during the closure of the Izmir-Ankara-Erzincan branch of the Alpine Neotethys Ocean. |
format |
Article in Journal/Newspaper |
author |
Toksoy Köksal, Fatma Oberhaensli, Roland Göncüoğlu, Mehmet Cemal |
author_facet |
Toksoy Köksal, Fatma Oberhaensli, Roland Göncüoğlu, Mehmet Cemal |
author_sort |
Toksoy Köksal, Fatma |
title |
Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
title_short |
Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
title_full |
Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
title_fullStr |
Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
title_full_unstemmed |
Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean |
title_sort |
hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: implications from the kurancali (turkey) ultramafic-mafic cumulates within the alpine neotethys ocean |
publisher |
MINERALOGY AND PETROLOGY |
publishDate |
2009 |
url |
https://hdl.handle.net/11511/31149 https://doi.org/10.1007/s00710-009-0044-7 |
geographic |
Victoria Land |
geographic_facet |
Victoria Land |
genre |
Victoria Land |
genre_facet |
Victoria Land |
op_relation |
KÖKSAL F., Oberhaensli R., GÖNCÜOĞLU M. C. , "Hydrous aluminosilicate metasomatism in an intra-oceanic subduction zone: Implications from the Kurancali (Turkey) ultramafic-mafic cumulates within the Alpine Neotethys Ocean", MINERALOGY AND PETROLOGY, cilt.95, ss.273-290, 2009 doi:10.1007/s00710-009-0044-7 290 0930-0708 61349152285 273 https://hdl.handle.net/11511/31149 95 WOS:000264852000008 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1007/s00710-009-0044-7 |
container_title |
Mineralogy and Petrology |
container_volume |
95 |
container_issue |
3-4 |
container_start_page |
273 |
op_container_end_page |
290 |
_version_ |
1766232642769911808 |