Boninites and Adakites from the Northern Termination of the Tonga Trench: Implications for Adakite Petrogenesis [PDF]
Journal of Petrology, 2007 Adakitic rocks were recovered by dredging from the northern termination of the Tonga Trench during the 1984 voyage of the R.V. Natsushima and the 1996 voyage of the R.V. Melville. These contain magmatic zircons that have been dated at 2 5M a by U^Pb methods, indicating that they are contemporaneous with boninite magmatism previously described from ...
T. J. Falloon +5 more
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Geochemistry and Isotope Geology of Adakitic Domes from Chakane Area in South of Quchan (Northeast of Iran) [PDF]
پترولوژی, 2019 The Chekneh subvolcanic domes with dacite and trachydacite compositions from the Miocene is located 110 km NE of Sabzevar, and are parts of the North Sabzevar-South Ghochan magmatic belt.
Mehdi Rezaei-Kahkhaei +3 more
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Origin of Dehaj Pliocene hyalo-andesite rocks in NW of Kerman: constraints on Sr and Nd isotopic ratios [PDF]
پترولوژی, 2022 IntroductionThe Urumieh-Dokhtar Magmatic assemblage includes various volcanic and intrusive rocks from Eocene to the Pleistocene. The dominant theory in describing the tectonomagmatic environment of the Urumieh-Dokhtar Magmatic assemblage emphasizes the ...
Sayed Zia Hosseini, Hadi Shahriari
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Adakites from collision‐modified lithosphere [PDF]
Geophysical Research Letters, 2005 Adakitic melts from Papua New Guinea (PNG) show adakitic geochemical characteristics, yet their geodynamic context is unclear. Modern adakites are associated with hot‐slab melting and/or remelting of orogenic mafic underplate at convergent margins.
Haschke, Michael, Ben-Avraham, Z.
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Геосистемы переходных зон, 2021 Adakite-like geochemical signature (high Sr/Y ratio at a low Y concentration) is recognized in andesites and dacites, associated with intraplate basalts in the Orlov volcanic field of Sakhalin Island.
Sergei V. Rasskazov +5 more
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Separation of the Mahabad young basalts, trachytes and trachy-andesites, geochemical and tectono-magmatic setting aspects; necessity of the Mahabad 1:100000 sheet reform [PDF]
پترولوژی, 2019 In the Mahabad region accompaniment of trachytes and trachy-andesites with OIB-like alkali-basalts are shown. Trachytes at the Soltan Mountain heights, trachy-andesites as darker enclaves in it and alkali-basalts in the three sites, Khatton Bagh ...
Monir Modjarrad, Yosef Rahim Souri
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Adakitic magmatism, a window to evolution on tectonic and mineralization in eastern Iran
Journal of Economic Geology, 2023 In this research, geochemical data from 314 samples of volcanic and intrusive rocks with adakitic or adakite-like affinity reported from eastern Iran have been studied, these rocks are often known with Sr>400 g/ton and ...
Saeed Saadat
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Zircon U–Pb geochronology and geochemistry of granitic rocks in central Mongolia
Mongolian Geoscientist, 2020 The Central Asian Orogenic Belt had been formed by amalgamation of voluminous subduction–accretionary complexes during the Late Neoproterozoic to the Mesozoic period. Mongolia is situated in the center of this belt.
Boldbaatar Dolzodmaa +3 more
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Petrography and Geochemistry of post-collisional adakites and Nb-enriched basalts association in the Sang-e-Rahuzg area (south of Birjand) [PDF]
پترولوژی, 2017 The studied rocks consist of Paleogene units with andesite and dacite composition and basaltic lavas belong to the Neogene time. Acid and intermediate lavas have medium to high-K calc alkaline nature and basalt is alkaline.
Hamid Reza Mohammadi +3 more
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Geochemistry of Adakites from the Philippines: Constraints on Their Origins [PDF]
Resource Geology, 2005 We have identified in the Philippine Archipelago 230 samples of Late Miocene to Quaternary intermediate and evolved magmatic rocks or glasses, the compositions of which plot within the adakitic field defined by Defant and Drummond (1990) using Sr/Y ratios versus Y contents.
Jégo, Sébastien +6 more
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