Geothermal Studies, Their Present Status and Contribution to Heat Flow Contouring in Turkey

Tezcan, Ahmet

doi:10.1007/978-3-642-95357-6_30

Cited by 32 publications

(26 citation statements)

References 4 publications

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“…In the field of study, in sections where free air gravity and aeromagnetic data present inverse correlating on, geophysical data from previous studies are: high heat flow of mW/m 2 (TEZCAN and TURGAY, 1989;PAMUKçU, 2004), absence of Sn wave , and the presence of very low Pn velocity . VON FRESE et al, (1982) mentioned the presence of crust thinning and of certain geodynamic processes that cause mantle intrusions in this kind of areas.…”

Section: Discussionmentioning

confidence: 99%

Investigation of Crustal Thickness in Eastern Anatolia Using Gravity, Magnetic and Topographic Data

Pamukçu

Akçiğ

Demirbaş³

et al. 2007

Pure appl. geophys.

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The tectonic regime of Eastern Anatolia is determined by the Arabia-Eurasia continent-continent collision. Several dynamic models have been proposed to characterize the collision zone and its geodynamic structure. In this study, change in crustal thickness has been investigated using gravity, magnetic and topographic data of the region. In the first stage, two-dimensional low-pass filter and upward analytical continuation techniques were applied to the Bouguer gravity data of the region to investigate the behavior of the regional gravity anomalies. Next the moving window power spectrum method was used, and changes in the probable structural depths from 38 to 52 km were determined. The changes in crustal thickness where free air gravity and magnetic data have inversely correlated and the type of the anomaly resources were investigated applying the Euler deconvolution method to Bouguer gravity data. The obtained depth values are consistent with the results obtained using the power spectrum method. It was determined that the types of anomaly resources are different in the west and east of the 40°E longitude. Finally, using the obtained findings from this study and seismic velocity models proposed for this region by previous studies, a probable two-dimensional crust model was constituted.

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Section: Discussionmentioning

confidence: 99%

Investigation of Crustal Thickness in Eastern Anatolia Using Gravity, Magnetic and Topographic Data

Pamukçu

Akçiğ

Demirbaş³

et al. 2007

Pure appl. geophys.

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“…TEZCAN (1979) assigned the geothermal conductivity value of 2.1 Wm -1°C-1 to Neogene clayey formations. The heat flow values for the region were computed as 88.8 and 106.5 mWm -2 with the thermal conductivity value suggested by TEZCAN (1979). A new Curie-point depth of 11.4 km can be calculated with Eq.…”

Section: Curie-point Depth Of the Regionmentioning

confidence: 99%

Curie-point Depth from Spectral Analysis of Magnetic Data in Erciyes Stratovolcano (Central TURKEY)

Maden

2009

Pure Appl. Geophys.

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Curie-point depth and heat flow values of the Erciyes region are determined to identify the thermal regime of the Central Anatolia by applying the spectral analysis method to the magnetic anomaly data. To compute the spectrum of the data, the magnetic anomaly of the region is transformed into 2-D Fourier domain to attain the average Curie depth. This method is useful in determining the top boundary of magnetic anomaly sources and reveals the Curie depth as 13.7 km in the study area. The obtained results imply a high thermal gradient (42.3°C km -1 ) and corresponding heat flow values (88.8 mWm -2 ) in the research area. Using the temperature value measured at borehole drilled by the General Directorate of Mineral Research and Exploration of Turkey (MTA), the values for the thermal gradient and heat flow value were computed as 50.7°C km -1 , 106.5 mWm -2 . From the heat flow value, the Curie-point depth was determined as 11.4 km in this region. It is concluded from the obtained values that the region has very high geothermal potential caused by partial melting of the lower crust.

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“…Geothermal areas in central Turkey used to measure thermal gradients to produce a heat flow contour map (TEZCAN, 1979). Box shows the study area.…”

Section: Figurementioning

confidence: 99%

Curie Point Depth Investigation of Central Anatolia, Turkey

Ateş

Bilim

Büyüksaraç

2005

Pure appl. geophys.

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The residual aeromagnetic total field intensity anomalies in central Anatolia were calculated from the regional aeromagnetic anomalies surveyed by the Mineral Research and Exploration (MTA) of Turkey. The residual aeromagnetic data were analyzed to produce Curie point estimates by the method of OKUBO et al. (1985). The Curie point depth of central Anatolia varies from 7.9 km and 22.6 km. The shallowest Curie point depths were observed around the Cappadocia and Erciyes Volcanic complexes in central Anatolia. A good correlation was deduced between the Curie point depths and the heat-flow data measured previously, which is most certainly important for the geothermal resources of the region. The shallow Curie point depths also correlate well with the hot spring locations in central Anatolia.

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Geothermal Studies, Their Present Status and Contribution to Heat Flow Contouring in Turkey

Cited by 32 publications

References 4 publications

Investigation of Crustal Thickness in Eastern Anatolia Using Gravity, Magnetic and Topographic Data

Investigation of Crustal Thickness in Eastern Anatolia Using Gravity, Magnetic and Topographic Data

Curie-point Depth from Spectral Analysis of Magnetic Data in Erciyes Stratovolcano (Central TURKEY)

Curie Point Depth Investigation of Central Anatolia, Turkey

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