Details of the abstract
| Title of paper | Hydrothermal system beneath Mt.Erciyes inferred from Three-dimensional Magnetotellurics, Central Anatolia, Türkiye |
| List of authors | Yazıcı, R., Karaş, M., Tank, S. B. |
| Affiliation(s) | Boğaziçi University, Kandilli Observatory and Earthquake Research Institute, İstanbul, Türkiye |
| Summary |
Thirty-five wide-band magnetotellurics (MT) data were collected in three survey campaigns in 2013, 2014 and 2018 to decipher the electrical structure beneath the Erciyes Volcanic Complex and the surrounding Erciyes pull-apart basin in Central Anatolia, Türkiye, within the context of an NSF funded project, Continental Dynamics / Central Anatolian Tectonics (CD/CAT). Bounding the Erciyes volcanic complex in the west and in the east, the Erciyes basin is made up three major faults, the Yeşilhisar, Gesi and Develi faults. While the Yeşilhisar and Develi faults define the west and east of the basin, the Gesi fault runs in the middle of the pull-apart basin making up the main branch of the Central Anatolian Fault (CAF) Zone, and crosses Mt. Erciyes. The Erciyes volcanic complex is proven to form in two stages: (i) Koçdağ (>2.8 Ma) and (i) New Erciyes (<2.8 Ma) stages, with various magmatism types. For determining the dimensionality of the MT data, phase tensor analyses were performed and three-dimensional models were developed using ModEM including topography to image the electrical conductivity variations beneath the volcanic complex, major faults and the basin. As a result significant and widespread conductive layer was observed beneath the volcanic complex that extends to around 5 km. The conductive layer, which appear to have deeper roots in the west when compared to east of the basin, was clearly marked by conductive-resistive interfaces near the three major faults. |
| Session Keyword | 2.0 Theory, Modelling and Inversion |
| File upload |
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