Hf-Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran

Hadi Shafaii Moghadam, Robert J. Stern, Jun Ichi Kimura, Yuka Hirahara, Ryoko Senda, Takashi Miyazaki

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

The peri-Arabian ophiolite belt, from Cyprus in the west, eastward through Northwest Syria, Southeast Turkey, Northeast Iraq, Southwest Iran, and into Oman, marks a 3000km-long convergent margin that formed during a Late Cretaceous (ca 100Ma) episode of subduction initiation on the north side of Neotethys. The Zagros ophiolites of Iran are part of this belt and are divided into Outer (OB) and Inner (IB) Ophiolitic Belts. We here report the first Nd-Hf isotopic study of this ophiolite belt, focusing on the Dehshir ophiolite (a part of IB). Our results confirm the Indian mid-oceanic ridge basalt (MORB) mantle domain origin for the Dehshir mafic and felsic igneous rocks. All lavas have similar Hf isotopic compositions, but felsic dikes have significantly less-radiogenic Nd isotopic compositions compared to mafic lavas. Elevated Th/Nb and Th/Yb in felsic samples accompany nonradiogenic Nd, suggesting the involvement of sediments or continental crust.

元の言語英語
ページ(範囲)202-214
ページ数13
ジャーナルIsland Arc
21
発行部数3
DOI
出版物ステータス出版済み - 9 1 2012

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ophiolite
isotope
isotopic composition
convergent margin
felsic rock
igneous rock
continental crust
dike
subduction
basalt
Cretaceous
mantle
sediment

All Science Journal Classification (ASJC) codes

  • Geology

これを引用

Moghadam, H. S., Stern, R. J., Kimura, J. I., Hirahara, Y., Senda, R., & Miyazaki, T. (2012). Hf-Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran. Island Arc, 21(3), 202-214. https://doi.org/10.1111/j.1440-1738.2012.00815.x

Hf-Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran. / Moghadam, Hadi Shafaii; Stern, Robert J.; Kimura, Jun Ichi; Hirahara, Yuka; Senda, Ryoko; Miyazaki, Takashi.

:: Island Arc, 巻 21, 番号 3, 01.09.2012, p. 202-214.

研究成果: ジャーナルへの寄稿記事

Moghadam, HS, Stern, RJ, Kimura, JI, Hirahara, Y, Senda, R & Miyazaki, T 2012, 'Hf-Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran', Island Arc, 巻. 21, 番号 3, pp. 202-214. https://doi.org/10.1111/j.1440-1738.2012.00815.x
Moghadam, Hadi Shafaii ; Stern, Robert J. ; Kimura, Jun Ichi ; Hirahara, Yuka ; Senda, Ryoko ; Miyazaki, Takashi. / Hf-Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran. :: Island Arc. 2012 ; 巻 21, 番号 3. pp. 202-214.
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