Hf–Nd isotope constraints on the origin of Dehshir Ophiolite, Central Iran
作者： HADI SHAFAII MOGHADAM , ROBERT J. STERN , JUN-ICHI KIMURA , YUKA HIRAHARA , RYOKO SENDA
DOI: 10.1111/J.1440-1738.2012.00815.X
关键词:
摘要: 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 3000 km-long convergent margin that formed during Late Cretaceous (ca 100 Ma) episode of subduction initiation on north side Neotethys. Zagros ophiolites Iran are part this belt divided Outer (OB) Inner (IB) Ophiolitic Belts. We here report first Nd–Hf isotopic study focusing Dehshir (a IB). Our results confirm Indian mid-oceanic ridge basalt (MORB) mantle domain origin for mafic felsic igneous rocks. All lavas have similar Hf compositions, but dikes significantly less-radiogenic Nd compositions compared to lavas. Elevated Th/Nb Th/Yb samples accompany nonradiogenic Nd, suggesting involvement sediments or continental crust.
core.ac.uk
elsevier.com
sci-hub.se 参考文章(51)
Yildirim Dilek, Harald Furnes, Minella Shallo, Suprasubduction zone ophiolite formation along the periphery of Mesozoic Gondwana Gondwana Research. ,vol. 11, pp. 453- 475 ,(2007) , 10.1016/J.GR.2007.01.005
Marguerite Godard, Delphine Bosch, Florence Einaudi, A MORB source for low-Ti magmatism in the Semail ophiolite Chemical Geology. ,vol. 234, pp. 58- 78 ,(2006) , 10.1016/J.CHEMGEO.2006.04.005
Y. Dilek, H. Furnes, Ophiolite genesis and global tectonics: Geochemical and tectonic fingerprinting of ancient oceanic lithosphere Geological Society of America Bulletin. ,vol. 123, pp. 387- 411 ,(2011) , 10.1130/B30446.1
Robert J. Stern, Michael C. Jackson, Patricia Fryer, Emi Ito, O, Sr, Nd and Pb isotopic composition of the Kasuga Cross-Chain in the Mariana Arc: A new perspective on the K-h relationship Earth and Planetary Science Letters. ,vol. 119, pp. 459- 475 ,(1993) , 10.1016/0012-821X(93)90056-F
N. McQuarrie, J. M. Stock, C. Verdel, B. P. Wernicke, Cenozoic evolution of Neotethys and implications for the causes of plate motions Geophysical Research Letters. ,vol. 30, pp. 2036- ,(2003) , 10.1029/2003GL017992
G. R. Tilton, C. A. Hopson, J. E. Wright, Uranium-lead isotopic ages of the Samail Ophiolite, Oman, with applications to Tethyan ocean ridge tectonics Journal of Geophysical Research. ,vol. 86, pp. 2763- 2775 ,(1981) , 10.1029/JB086IB04P02763
Robert Reilinger, Simon McClusky, Philippe Vernant, Shawn Lawrence, Semih Ergintav, Rahsan Cakmak, Haluk Ozener, Fakhraddin Kadirov, Ibrahim Guliev, Ruben Stepanyan, Merab Nadariya, Galaktion Hahubia, Salah Mahmoud, K Sakr, Abdullah ArRajehi, Demitris Paradissis, A Al‐Aydrus, Mikhail Prilepin, Tamara Guseva, Emre Evren, Andriy Dmitrotsa, SV Filikov, Francisco Gomez, Riad Al‐Ghazzi, Gebran Karam, None, GPS constraints on continental deformation in the Africa-Arabia-Eurasia continental collision zone and implications for the dynamics of plate interactions Journal of Geophysical Research. ,vol. 111, ,(2006) , 10.1029/2005JB004051
J.A. Pearce, P.D. Kempton, J.B. Gill, Hf Nd evidence for the origin and distribution of mantle domains in the SW Pacific Earth and Planetary Science Letters. ,vol. 260, pp. 98- 114 ,(2007) , 10.1016/J.EPSL.2007.05.023
PA Floyd, MK Yaliniz, MC Goncuoglu, Geochemistry and petrogenesis of intrusive and extrusive ophiolitic plagiogranites, Central Anatolian Crystalline Complex, Turkey Lithos. ,vol. 42, pp. 225- 241 ,(1998) , 10.1016/S0024-4937(97)00044-3
J.D. Woodhead, J.M. Hergt, J.P. Davidson, S.M. Eggins, Hafnium isotope evidence for ‘conservative’ element mobility during subduction zone processes Earth and Planetary Science Letters. ,vol. 192, pp. 331- 346 ,(2001) , 10.1016/S0012-821X(01)00453-8