Upper-mantle deformation beneath the Pyrenean domain inferred from SKS splitting in northern Spain and southern France

Upper mantle deformation beneath the North American–Pacific plate boundary in California from SKS splitting

[1] In order to constrain the vertical and lateral extent of deformation and the interactions between lithosphere and asthenosphere in a context of a transpressional plate boundary, we performed teleseismic shear wave splitting measurements for 65 permanent and temporary broadband stations in central California. We present evidence for the presence of two anisotropic domains: (1) one with clear...

Upper mantle anisotropy beneath Peru from SKS splitting: Constraints on flat slab dynamics and interaction with the Nazca Ridge

Upper-mantle flow beneath French Polynesia from shear wave splitting

Fabrice R. Fontaine,1,2 Guilhem Barruol,1,3 Andréa Tommasi3 and Götz H. R. Bokelmann3 1Laboratoire Terre-Océan, Université de Polynésie française, BP 6570, 98702 Faaa, Tahiti, Polynésie française 2Research School of Earth Sciences, Australian National University, Building 61, Mills Road, Canberra, ACT 0200, Australia. E-mail: [email protected] 3Géosciences Montpellier, CNRS, Université Mo...

Petrological Evolution of the Upper Mantle Beneath the Southern Sanandaj-Sirjan Zone: Evidence from Kuhshah Peridotite Massif, Southeast Iran

The Kuhshah ultramafic complex is located in the south-east of Sanandaj-Sirjan metamorphic zone, near the probable remnants of Neotethys plate in Iran. It consists of highly depleted harzburgites, dunites, chromitite bands and altered gabbros. The ultramafic parts have been intruded by numerous clinopyroxenite dykes and veins. In the harzburgites, there are different generations of olivine, ort...

Short Note Seismic Anisotropy from SKS Splitting beneath Northeastern Tibet

The northeastern boundary of the Tibetan high plateau is marked by a 2 km topographic drop and a coincident rapid change in crustal thickness. Surface tectonics are dominated by the Kunlun strike-slip fault system and adjacent Kunlun concealed thrust. The main objective of the current study is to map lateral variations of seismic anisotropy parameters in this region along the linear INDEPTH IV ...