Geochemistry and Petrogenesis of Carboniferous volcanic rocks, NW Marand: Evidence for interacontinental rift Magmatism)
The studied volcanic-sedimentary sequence located at the East-Azarbaijan province, north Marand and in the Central Iranian structural zone. The studied sequence composed of alternative sandstone, shale, conglomerate, limestone, felsic volcaniclastics, alkalibasalt and rhyolite which outcropped below...
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| Format: | Article |
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University of Isfahan
2020-11-01
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| Series: | پترولوژی |
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| Online Access: | https://ijp.ui.ac.ir/article_24971_38d81b8494fed0d03fc65e7c7f35f572.pdf |
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| author | Zahra Badrzadeh Mehraj Aghazadeh Sahar Fathi |
| author_facet | Zahra Badrzadeh Mehraj Aghazadeh Sahar Fathi |
| author_sort | Zahra Badrzadeh |
| collection | DOAJ |
| description | The studied volcanic-sedimentary sequence located at the East-Azarbaijan province, north Marand and in the Central Iranian structural zone. The studied sequence composed of alternative sandstone, shale, conglomerate, limestone, felsic volcaniclastics, alkalibasalt and rhyolite which outcropped below the Permian sedimentary sequence and on the Devonian sedimentary rocks. Magmatism in the area has a bimodal magmatic characteristic and the basaltic rocks have alkaline affinity. They are characterized by enrichment of LILE over HFSE and show significant OIB-type trace element signatures. On the basis of trace element data, the basic rocks generated by low degree partial melting of garnet-spinel lherzolite mantle source with ocean island basalt characteristics, which fractionated en route to the surface. On the basis of geological and major and trace elements data, the felsic rocks are comparable to A-type granitoids and their trace element ratios are very close to determinate bulk continental crust composition which indicate their crustal origin. The felsic rocks were originated by the dehydration melting of a tonalite or granodiorite source with a plagioclase rich residual assemblage. The Carboniferous bimodal volcanism were induced by continental rifting and asthenospheric upwelling during early phases of Neotethys opening. |
| first_indexed | 2024-03-12T20:05:09Z |
| format | Article |
| id | doaj.art-c98c3cd9884c471bb07704d292c36237 |
| institution | Directory Open Access Journal |
| issn | 2228-5210 2322-2182 |
| language | fas |
| last_indexed | 2024-03-12T20:05:09Z |
| publishDate | 2020-11-01 |
| publisher | University of Isfahan |
| record_format | Article |
| series | پترولوژی |
| spelling | doaj.art-c98c3cd9884c471bb07704d292c362372023-08-02T02:10:16ZfasUniversity of Isfahanپترولوژی2228-52102322-21822020-11-01113214010.22108/ijp.2020.122485.117324971Geochemistry and Petrogenesis of Carboniferous volcanic rocks, NW Marand: Evidence for interacontinental rift Magmatism)Zahra Badrzadeh0Mehraj Aghazadeh1Sahar Fathi2Department of Geology, Payame Noor Universtiy, PO BOX 19395-3697, Tehran, IranDepartment of Geology, Payame noor university,, Tehran-IranDepartment of Geology, Payame Noor Universtiy, IranThe studied volcanic-sedimentary sequence located at the East-Azarbaijan province, north Marand and in the Central Iranian structural zone. The studied sequence composed of alternative sandstone, shale, conglomerate, limestone, felsic volcaniclastics, alkalibasalt and rhyolite which outcropped below the Permian sedimentary sequence and on the Devonian sedimentary rocks. Magmatism in the area has a bimodal magmatic characteristic and the basaltic rocks have alkaline affinity. They are characterized by enrichment of LILE over HFSE and show significant OIB-type trace element signatures. On the basis of trace element data, the basic rocks generated by low degree partial melting of garnet-spinel lherzolite mantle source with ocean island basalt characteristics, which fractionated en route to the surface. On the basis of geological and major and trace elements data, the felsic rocks are comparable to A-type granitoids and their trace element ratios are very close to determinate bulk continental crust composition which indicate their crustal origin. The felsic rocks were originated by the dehydration melting of a tonalite or granodiorite source with a plagioclase rich residual assemblage. The Carboniferous bimodal volcanism were induced by continental rifting and asthenospheric upwelling during early phases of Neotethys opening.https://ijp.ui.ac.ir/article_24971_38d81b8494fed0d03fc65e7c7f35f572.pdfvolcanic rockspetrogenesisriftpaleozoicmarand |
| spellingShingle | Zahra Badrzadeh Mehraj Aghazadeh Sahar Fathi Geochemistry and Petrogenesis of Carboniferous volcanic rocks, NW Marand: Evidence for interacontinental rift Magmatism) پترولوژی volcanic rocks petrogenesis rift paleozoic marand |
| title | Geochemistry and Petrogenesis of
Carboniferous volcanic rocks, NW Marand:
Evidence for interacontinental rift Magmatism) |
| title_full | Geochemistry and Petrogenesis of
Carboniferous volcanic rocks, NW Marand:
Evidence for interacontinental rift Magmatism) |
| title_fullStr | Geochemistry and Petrogenesis of
Carboniferous volcanic rocks, NW Marand:
Evidence for interacontinental rift Magmatism) |
| title_full_unstemmed | Geochemistry and Petrogenesis of
Carboniferous volcanic rocks, NW Marand:
Evidence for interacontinental rift Magmatism) |
| title_short | Geochemistry and Petrogenesis of
Carboniferous volcanic rocks, NW Marand:
Evidence for interacontinental rift Magmatism) |
| title_sort | geochemistry and petrogenesis of carboniferous volcanic rocks nw marand evidence for interacontinental rift magmatism |
| topic | volcanic rocks petrogenesis rift paleozoic marand |
| url | https://ijp.ui.ac.ir/article_24971_38d81b8494fed0d03fc65e7c7f35f572.pdf |
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