Thermomagnetic properties of the upper crust in Central Anatolian Crystalline Complex-CACC (Turkey) from spectral analysis of magnetic anomalies

BİLİM F., Aydemir A.

ARABIAN JOURNAL OF GEOSCIENCES, cilt.15, sa.2, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s12517-022-09477-6
  • Dergi Adı: ARABIAN JOURNAL OF GEOSCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), Geobase, INSPEC
  • Anahtar Kelimeler: Magnetic anomaly, Yozgat batholith, Curie point depth, Radiogenic heat production, Seismic velocity, Central Anatolian Crystalline Complex (CACC), CURIE-POINT DEPTH, LATE CRETACEOUS EXTENSION, HEAT-FLOW, CAPPADOCIA REGION, YOZGAT BATHOLITH, FAULT ZONE, CENOZOIC ROTATIONS, TECTONIC EVOLUTION, EAST ANATOLIA, NIGDE MASSIF
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

Spectral properties of aeromagnetic anomalies in the Central Anatolia are re-analyzed and reviewed for accurate Curie point depths (CPDs), radiogenic heat production, thermal conductivity, seismic velocities (V-p) and crustal temperatures. Cappadocia volcanic complex (CVC) and batholiths have direct relations with aeromagnetic anomalies. CVC has contributions to the geothermal potential of the region; Cretaceous granitoids are cold intrusions. The Yozgat Batholith is represented with CPD contours of 18-19 km. CPDs are shallow (7-8 km) beneath the CVC. Radiogenic heat production is high (0.64 mu Wm(-3)) in this region while significantly low (0.22 mu Wm(-3)) to the SW of Yozgat. Depending on the low thermal activity, seismic velocities (V-P) are higher (6.68 to 7.85 km/s) in this area due to granitoids than CVC (6.16-7.15 km/s). Thermal conductivities between Kaman and Yozgat are 2.51-2.54 W/mK. They are lower (2.49-2.50 W/mK) under the CVC due to reducing effect of high heat-flows. South of the Central Anatolian Crystalline Complex (CACC) keeps prospectivity for the geothermal energy, and the northern part of CACC presents cold structure in spite of granitoids, ophiolites and volcanics. Metamorphic rocks do not include any thermal potential.