A hidden collapsed caldera revealed from 3D resistivity modelling of magnetotelluric data acquired for a geothermal exploration in Cappadocia region of central Turkey

Basokur A., Meqbel N., Hacioglu Ö., Arslan H., Efeçinar T.

10th Congress of Balkan Geophysical Society, Albena, Bulgaristan, 18 - 22 Eylül 2019, ss.1-5, (Özet Bildiri) identifier

  • Yayın Türü: Bildiri / Özet Bildiri
  • Doi Numarası: 10.3997/2214-4609.201902617
  • Basıldığı Şehir: Albena
  • Basıldığı Ülke: Bulgaristan
  • Sayfa Sayıları: ss.1-5
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

A magnetotelluric survey has been conducted in Cappadocia region of central Turkey in order to find new geothermal resources. The survey area has formerly been postulated as the location of a buried caldera that was one of the main eruptive centres of Cappadocia volcanic province. Three-dimensional non-linear conjugate gradient inversion of magnetotelluric data by using the full impedance tensor helps to delineate the subsurface resistivity distribution. The derived resistivity model reveals the possibility of a buried caldera. The low resistivity anomalies are interpreted as the clay alteration zones caused by hydrothermal activities.A magnetotelluric survey has been conducted in Cappadocia region of central Turkey in order to find new geothermal resources. The survey area has formerly been postulated as the location of a buried caldera that was one of the main eruptive centres of Cappadocia volcanic province. Three-dimensional non-linear conjugate gradient inversion of magnetotelluric data by using the full impedance tensor helps to delineate the subsurface resistivity distribution. The derived resistivity model reveals the possibility of a buried caldera. The low resistivity anomalies are interpreted as the clay alteration zones caused by hydrothermal activities.