Tertiary and quaternary volcanism of the Erzurumkars area (Eastern Turkey): Geochronological data and geodynamic evolution |
| |
| Authors: | F Innocenti R Mazzuoli G Pasquar F Radicati Di Brozolo L Villari |
| |
| Institution: | F. Innocenti, R. Mazzuoli, G. Pasquarè, F. Radicati Di Brozolo,L. Villari |
| |
| Abstract: | This paper presents new geochemical and geochronological data on the Neogene and Quaternary volcanic products from the area of Erzurum and Kars (Eastern Turkey).The affinity of most of the volcanic rocks concerned is calc-alkaline, with the exception of minor Quaternary alkaline rocks that outcrop in the Kars sector. Ages range from 8 m.y. to 1.3 m.y.The time-space distribution of the calc-alkaline volcanism in Eastern Turkey - NW Iran is characterized by a sudden northward jump, that occurred around 6 m.y. ago, from the Van-Erzurum Southern Belt to the Kars Northern Belt. Available data indicate that this northward migration of volcanism was due to changes in the subduction geometry of the Arabian plate under Eurasia. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
