Thermal structure of the crust in the Black Sea: comparative analysis of magnetic and heat flow data

Dolmaz, M. Nuri; Кутас, Р. І.; Rusakov, О. M.; Öksüm, Erdinç; Hisarlı, Z. Mümtaz; Okyar, Mahmut; Kalyoncuoğlu, Ümit Yalçın; Tutunsatar, H. E.; Legostaeva, О. V.

doi:10.1007/s11001-014-9224-x

Cited by 28 publications

(12 citation statements)

References 26 publications

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“…Our input parameters included AFT (single grain ages, projected track lengths, and Dpar values), ZHe, and AHe data (mean age of at least two aliquots with 2σ error). We assumed a mean surface temperature of 10 ± 5 °C, and for the multisample modeling, the present‐day temperature of each sample was calculated according to their relative down‐well position (see above) assuming a geothermal gradient of 25 °C/km (Starostenko et al, ). The segments between the constraint boxes were set to be monotonic consistent, (gradual/episodic during heating/cooling) and in few cases monotonic variable (but only during cooling).…”

Section: Methodsmentioning

confidence: 99%

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

et al. 2018

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The Central Pontides of N Turkey represents a mobile orogenic belt of the southern Eurasian margin that experienced several phases of exhumation associated with the consumption of different branches of the Neo-Tethys Ocean and the amalgamation of continental domains. Our new low-temperature thermochronology data help to constrain the timing of these episodes, providing new insights into associated geodynamic processes. In particular, our data suggest that exhumation occurred at (1)~110 to 90 Ma, most likely during tectonic accretion and exhumation of metamorphic rocks from the subduction zone; (2) from~60 to 40 Ma, during the collision of the Kirşehir and Anatolide-Tauride microcontinental domains with the Eurasian margin; (3) from~40 to 25 Ma, either during the early stages of the Arabia-Eurasia collision (soft collision) when the Arabian passive margin reached the trench, implying 70 to 530 km of subduction of the Arabian passive margin, or during a phase of trench advance predating hard collision at 20 Ma; and (4)~11 Ma to the present, during transpression associated with the westward motion of Anatolia. Our findings document the punctuated nature of fault-related exhumation, with episodes of fast cooling followed by periods of slow cooling or subsidence, the role of inverted normal faults in controlling the Paleogene exhumation pattern, and of the North Anatolian Fault in dictating the most recent pattern of exhumation.

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Section: Methodsmentioning

confidence: 99%

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

et al. 2018

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“…One of the methods for examining the thermal structure of the crust is the estimation of the CPD using aeromagnetic data (Smith et al, 1977;Okubo et al, 1985Okubo et al, , 1989Okubo et al, , 1994Okubo et al, , 2003Tsokas et al, 1998;Tanaka et al, 1999;Stampolidis and Tsokas, 2002;Dolmaz et al, 2005;Ates et al, 2005;Aydin et al, 2005;Qingqing et al, 2008;Li et al, 2010;Li, 2011;Bilim, 2011;Manea and Manea, 2011;Abd El Nabi, 2012;Hisarli et al, 2012;Saleh et al, 2013;Sayed et al, 2013;Abraham et al, 2014;Obande et al, 2014;Starostenko et al, 2014). Various studies have shown correlations between Curie temperature depths and average crustal temperatures, leading to viable conclusions regarding lithospheric thermal conditions in a number of regions around the world (Ross et al, 2006;Rajaram, 2007;Bouligand et al, 2009).…”

Section: Centroid Depth Methods For Calculating Dbms 221 Random Magmentioning

confidence: 99%

Estimating depth to the bottom of magnetic sources at Wikki Warm Spring region, northeastern Nigeria, using fractal distribution of sources approach

Abraham¹,

Obande²,

Chukwu³

et al. 2015

Turkish J Earth Sci

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The Wikki Warm Spring (WWS) is located on the Kerri-Kerri formation of tertiary age. This forms part of the Benue Basin, which links up with the Chad Basin in the north and extends southwest to the Anambra Basin in Nigeria. The stratigraphy of the WWS region consists of alluvium, the Kerri-Kerri formation, the Gombe formation, the Pindiga formation, the Yolde formation, the Bima formation, and basement rocks as the oldest. We estimate the depth to the bottom of magnetic sources (DBMS) in the WWS region using the fractal sources distribution approach on aeromagnetic data to identify the geothermal system of the WWS region. The adopted computational method is based on statistical methods of depth determination from the radial power spectrum assuming a fractal distribution of magnetic sources. The average estimated DBMS at the WWS source location is 10.72 ± 0.54 km. The obtained results imply an average thermal gradient of 54.11 °C km -1 and heat flow value of 135.28 mW/m 2 . Generally, shallow DBMS values are obtained in the northeastern region of the WWS area and these increase towards the southwestern region when regional variation patterns of estimated depths are considered. The generally shallow DBMS obtained in the study area is attributed to magmatic intrusion or diapirism in the subsurface and emphasizes the effects of large-scale tectonic events, particularly the basin-initiating event, as major influences on the thermal history. Results will contribute to decisions on where to drill boreholes for further geothermal energy exploration in the region.

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“…С.И. Субботина су щественно уточнить геологическое строение Азово Черноморского бассейна и определить главные перспективные нефтегазоносные комплексы и структуры, которые формировались на разных этапах геодинамической эволюции региона [18,28,14,30,21,38].…”

Section: результаты комплексных междисциплинарных научных исследованийunclassified

Integrated, Disciplinary Studies of the Azov – Black Sea Region: Results and Prospects

Gozhik¹,

Eremeev²,

Коболев³

et al. 2016

Geol. polezn. iskop. mirov. okeana

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Thermal structure of the crust in the Black Sea: comparative analysis of magnetic and heat flow data

Cited by 28 publications

References 26 publications

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

Estimating depth to the bottom of magnetic sources at Wikki Warm Spring region, northeastern Nigeria, using fractal distribution of sources approach

Integrated, Disciplinary Studies of the Azov – Black Sea Region: Results and Prospects

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