Radiogenic heat production analysis of Fennoscandian Shield and adjacent areas in Sweden

Veikkolainen, Toni; Kukkonen, Ilmo; Näslund, Jens‐Ove

doi:10.1093/gji/ggz186

Cited by 8 publications

(5 citation statements)

References 48 publications

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“…The K ratio for the other types of rock is below 0.3, except for a few samples of A-type granitoids that exceed this value, with the highest K ratio having a value of 0.78. In contrast, the proportion of U content is quite variable, with the largest number of samples between 0.0 and 0.6, in line with the observations made by Veikkolainen et al (2019). The proportion of Th content is generally dominant, with values between 0.4 and 0.95.…”

Section: Bodysupporting

confidence: 83%

Radiogenic heat production in granitoids from the Sierras de Córdoba, Argentina

et al. 2021

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One of the most important processes of heat generation from the Earth's interior is the radioactive decay of isotopes. The main hosts of the major radiogenic elements U, Th and K in the crust are granitoids. The Sierras de Córdoba are formed of dissimilar granitic intrusions emplaced by a series of magmatic events that occurred during the Paleozoic. The different granitoids are classified as A-type, I-type, and S-type, and there is also a magmatic expression corresponding to the Famatinian period which exhibits TTG-type characteristics. In this work, the geochemical concentrations of the radiogenic elements of the granitic intrusions making up the Sierras de Córdoba were compiled in a single database. The radiogenic heat production of the Sierras de Córdoba granitoids was evaluated, making this the first study of radiogenic heat generation in the area. The radiogenic heat production showed variability for the different events, with the highest values found in Achalian magmatism and early Carboniferous magmatism, which are represented by A-type granitoids. The Capilla del Monte pluton has the highest heat production rate, with a value of 4.54 ± 1.38 µW/m3. The lowest values were found in the TTG-type granitoids and in the S-type granitoids, all of which belong to the Famatinian magmatic event. The range of values for this magmatic event goes from 0.26 ± 0.05 µW/m3 for the San Agustin pluton to 1.19 ± 0.50 µW/m3 for the La Playa pluton. An empirical ternary model is presented for the Sierras de Córdoba that involves the concentrations of the elements U, Th and K, and the radiogenic heat production, with a distinction for the petrogenetic types according to the S-I-A-M classification. The thermal manifestations located on the Capilla del Monte pluton could be related to the radioactive heat generation of the intrusion, involving both the neotectonic activity of the area and the radiogenic heat production. The results provide new opportunities for studying temperature variation within some of these intrusions and to evaluate the geothermal potential of the granitoids of Córdoba.

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Section: Bodysupporting

confidence: 83%

Radiogenic heat production in granitoids from the Sierras de Córdoba, Argentina

et al. 2021

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“…Geological map of the study area and its surroundings (modified from [39]). [25], [29]- [30]) tarafından 6.5 µW/m 3 civarında radyojenik ısı üretim değerleri uygun sıcak kuru kaya olarak değerlendirilmiştir. Bu çalışmanın temel amacı, çalışma alanında uygun sıcak kuru kaya varlığının araştırılmasıdır.…”

Section: Jeolojiunclassified

“…Gamma ışın spektrometri yöntemi kullanılarak değerli mineral araştırmaları [5]- [8], jeolojik birimlerin sınırlarının belirlenmesi [9]- [10], insan sağlığı açısından değerlendirmeler [11], [6], [12]- [18], ısı üretimi çalışmaları [1]- [2], [19]- [25] vb. birçok çalışmalar yapılabilmektedir.…”

Section: Introductionunclassified

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Determination of the Hot Dry Rock from Radiogenic Heat Production for Potential Geothermal Sources and Example of Isparta-Yakaören

Uyanık¹,

Kurt²,

Uyanık³

2020

Pamukkale J Eng Sci

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Jeotermal sistem, enerji açısından önemli bir kaynaktır. Enerji ihtiyacı yüksek olan ülkelerde "sıcak kuru kaya" kavramı daha da önem kazanmaktadır. Bu çalışmada radyoaktif verilerden yararlanarak sıcak kuru kaya niteliği taşıyabilecek yapı araştırması yapılmıştır. Bu amaçla gama-ışın spektrometre cihazı ile Isparta-Yakaören civarında uzun ömürlü doğal radyoaktif elementler olan K, U ve Th konsantrasyon verileri elde edilmiştir. Çalışma alanında 362 farklı noktada yerinde spektrometrik ölçümler yapılmıştır. Bu ölçümler sonucunda elde edilen U, Th ve K konsantrasyon değerleri kullanılarak radyojenik ısı üretim değerleri hesaplanmıştır. Daha sonra çalışma alanı için U, Th, K konsantrasyon ve radyojenik ısı üretim haritaları oluşturulmuştur. Haritalar yorumlanarak çalışma alanı jeotermal potansiyeli açısından tartışılmıştır. Çalışma alanındaki trakiandezit, tüf ve alüvyona ait ortalama radyojenik ısı üretimi sırasıyla 6.5 μW/m 3 , 4.2 μW/m 3 ve 3.8 μW/m 3 olarak elde edilmiştir. Çalışma alanında özellikle trakiandezit kayasının yüksek ısı üretiminden ve bu kayacın geçirimsiz olması durumunda sıcak kuru kaya jeotermal kaynağı olarak geliştirmek için bir potansiyele sahip olabileceği düşünülmektedir.The Geothermal system is an important source in terms of energy. In countries with high energy requirements, the term "hot dry rock" becomes even more important. In this study, in a place where it can be a hot dry rock, field survey was conducted by using radioactive data. For this purpose, the data of K, U and Th concentration, which is long term natural radioactive elements, were obtained with gamma-ray spectrometer device around Isparta-Yakaören. In the study area, in-situ spectrometric measurements were performed at 362 different points. Radiogenic Heat production values were calculated by using the values of U, Th and K concentration obtained as a result of these measurements. Then, maps to evaluate of the study area were generated by using U, Th, K concentration and radiogenic heat production values. The study area was discussed in terms of geothermal potential by interpreted maps. The average radiogenic heat production values of the trachyandesite tuff and alluvium units in the study area were obtained as 6.5 μW/m 3 , 4.2 μW/m 3 and 3.8 μW/m 3 , respectively. It is thought that in the study area, especially from the high heat production of trachyandesite rock and this rock may have a potential to develop as a hot dry rock geothermal source if it is impermeable.

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“…Radiogenic heat generation in granite has been analyzed by numerous researchers (Artemeiva et al, 2017;Hasterok et al, 2019;Veikkolainen et al, 2019). The Th/U ratio of granite can be used to explain the geodynamic evolution and represent the genesis of continental arc magmas (Maden and Akaryali, 2015).…”

Section: Introductionmentioning

confidence: 99%

Radiogenic heat production of S-type and I-type granite rocks in Bangka Island, Indonesia

Siregar

Widana

Sismanto

2021

KJS publishes peer-review articles in Mathematics, Computer Sci

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Radiogenic heat production (RHP) has been investigated from widely types of rocks based on regional setting and metamorphism grade. In this study, we analyze the abundance of heat producing elements (U, Th, K) and Radiogenic Heat Production (RHP) on I-type and S-type granite rocks in Bangka Island, one of the main provinces in Tin Belt Island. The average U, Th and K concentrations for both S-type and I-types granite are 10.27 ppm, 79.6 ppm, 3.1% and 87.79 ppm, 99.2 ppm and 1.93 % respectively. The highest concentration of U (681.22 ppm) and Th (99.2 ppm) are found in Pangkal Pinang and K (3.79%) in West Bangka. We analyze that RHP average for I-type granite is higher with 27.87 (N=17, range from 12.97 to 550.28) than S-type with 8.43 (N=11, range from 4.93 to 12.64). The Th/U ratio shows an exponential correlation with RHP and classifies S-type granite tectonic discriminant as continental collision and I-type granite as continental arc.

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Radiogenic heat production analysis of Fennoscandian Shield and adjacent areas in Sweden

Cited by 8 publications

References 48 publications

Radiogenic heat production in granitoids from the Sierras de Córdoba, Argentina

Radiogenic heat production in granitoids from the Sierras de Córdoba, Argentina

Determination of the Hot Dry Rock from Radiogenic Heat Production for Potential Geothermal Sources and Example of Isparta-Yakaören

Radiogenic heat production of S-type and I-type granite rocks in Bangka Island, Indonesia

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