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  1. H150 博物館
  2. H150b 紀要
  3. 名古屋大学博物館報告
  4. 33

Geochemistry of the Permian–Triassic volcano-plutonic rocks in the Oyut-uul area, northeast of Darkhan, Mongolia : Magmatism at southern margin of Siberian continent

https://doi.org/10.18999/bulnum.033.02
https://doi.org/10.18999/bulnum.033.02
3d61cce0-afd4-4bc1-b314-0864c9b67125
名前 / ファイル ライセンス アクション
033_02.pdf 033_02 (1.0 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2015-05-15
タイトル
タイトル Geochemistry of the Permian–Triassic volcano-plutonic rocks in the Oyut-uul area, northeast of Darkhan, Mongolia : Magmatism at southern margin of Siberian continent
言語 en
著者 TSUKADA, Kazuhiro

× TSUKADA, Kazuhiro

WEKO 75279

en TSUKADA, Kazuhiro

Search repository
PUREVSUREN, Nemekhbayar

× PUREVSUREN, Nemekhbayar

WEKO 75280

en PUREVSUREN, Nemekhbayar

Search repository
NURAMKHAAN, Manchuk

× NURAMKHAAN, Manchuk

WEKO 75281

en NURAMKHAAN, Manchuk

Search repository
GANTUMUR, Onon

× GANTUMUR, Onon

WEKO 75282

en GANTUMUR, Onon

Search repository
HASEGAWA, Hitoshi

× HASEGAWA, Hitoshi

WEKO 75283

en HASEGAWA, Hitoshi

Search repository
YAMAMOTO, Koshi

× YAMAMOTO, Koshi

WEKO 75284

en YAMAMOTO, Koshi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 Late Paleozoic–Early Mesozoic
キーワード
主題Scheme Other
主題 adakites
キーワード
主題Scheme Other
主題 southern margin of Siberian continent
キーワード
主題Scheme Other
主題 Mongolia
抄録
内容記述 The geochemistry of the Late Paleozoic–Early Mesozoic volcano-plutonic rocks of northern Mongolia is a key factor to understand the subduction-related magmatism at the southern margin of “Siberian continent (Siberian craton + accreted geologic units).” Many studies have been carried out in the volcano-plutonic rocks; however, fundamental questions on its detail petrogenesis still remain unanswered. This paper describes the geochemistry of the Permian–Triassic volcanoplutonic rocks at the Oyut-uul area, northeast of Darkhan City, Mongolia. The mid-ocean ridge basalt (MORB)-normalized multi-element pattern (spidergram) for the examined rocks shows an enrichment of large-ion lithophile elements (LILE) against high-field-strength elements (HFSE) and rare earth elements (REE), with clear negative Nb anomaly to suggest an arc-related igneous activity. The most data are plotted in the calc-alkaline field in the SiO2 vs. FeO*/MgO diagram. It is, thus, concluded that the examined rocks are of calc-alkaline series formed at an arc environment. The present samples, 53– 78 wt.% SiO2, high Al2O3 and Sr concentrations, high La/Yb ratio, and low K2O/Na2O ratio, have adakitic nature derived from oceanic slab-melt. They are quite similar to the marginal facies of the Kitakami adakitic granite of Japan in Sr/Y-Y relationship, MgO concentration, spidergram, and REE chondrite-normalized pattern. It is considered that the marginal facies of the Kitakami adakitic granite was resulted from interaction between the slab-melt and mantle peridotite/lower crustal amphibolite during their ascent. The Oyut-uul rocks might be also derived from oceanic slab-melt interacted with mantle peridotite/lower crustal amphibolite.
言語 en
内容記述タイプ Abstract
出版者
言語 ja
出版者 名古屋大学博物館
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/bulnum.033.02
ID登録タイプ JaLC
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 1346-8286
書誌情報 ja : 名古屋大学博物館報告

巻 33, p. 15-30, 発行日 2018-03-01
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