Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia
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2019
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International Multidisciplinary Scientific GeoConference SGEM
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Hyperalkaline (pH>10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffuse fashion along fractures. The spring water is of the Ca-OH type, the pH level is 11.6 and the water temperature 11.2°C. The drainage area of the spring, like the entire Mt. Studena, is built up of Paleozoic ultramafic rocks, which geotectonically belong to the External Vardar Subzone. The spring is situated in the floodplain of the Brezanska River, whose channel is the local base level of erosion. The primary point of groundwater emergence is in solid ultramafic rocks, withi...n a zone of fractures up to 0.5 mm wide, over a land area of ~1.5 m2. The paper describes a conceptual model of the formation of hyperalkaline water for the ascending spring in the ultramafic valley of the Brezanska River, on the northern slopes of Mt. Studena. The pH level of the groundwater is indicative of contemporary serpentinization, deep groundwater circulation and a prolonged contact between groundwater and ultramafic rocks along secondary fracture systems.
Keywords:
hyperalkaline water / ultramafic rocks / ascending spring / fractured aquifer / SerbiaSource:
Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 2019, 19, 153-160Publisher:
- International Multidisciplinary Scientific GeoConferences (SGEM)
Funding / projects:
- Geologic and ecotoxicologic research in identification of geopathogen zones of toxic elements in drinking water reservoirs- research into methods and procedures for reduction of biochemical anomalies (RS-MESTD-Basic Research (BR or ON)-176018)
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IHTMTY - CONF AU - Nikić, Zoran AU - Vidović, Milka M. AU - Marić, Nenad AU - Trajković, Ivana AU - Gordanić, Vojin PY - 2019 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/7158 AB - Hyperalkaline (pH>10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffuse fashion along fractures. The spring water is of the Ca-OH type, the pH level is 11.6 and the water temperature 11.2°C. The drainage area of the spring, like the entire Mt. Studena, is built up of Paleozoic ultramafic rocks, which geotectonically belong to the External Vardar Subzone. The spring is situated in the floodplain of the Brezanska River, whose channel is the local base level of erosion. The primary point of groundwater emergence is in solid ultramafic rocks, within a zone of fractures up to 0.5 mm wide, over a land area of ~1.5 m2. The paper describes a conceptual model of the formation of hyperalkaline water for the ascending spring in the ultramafic valley of the Brezanska River, on the northern slopes of Mt. Studena. The pH level of the groundwater is indicative of contemporary serpentinization, deep groundwater circulation and a prolonged contact between groundwater and ultramafic rocks along secondary fracture systems. PB - International Multidisciplinary Scientific GeoConferences (SGEM) C3 - Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019 T1 - Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia VL - 19 SP - 153 EP - 160 UR - https://hdl.handle.net/21.15107/rcub_cer_7158 ER -
@conference{ author = "Nikić, Zoran and Vidović, Milka M. and Marić, Nenad and Trajković, Ivana and Gordanić, Vojin", year = "2019", abstract = "Hyperalkaline (pH>10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffuse fashion along fractures. The spring water is of the Ca-OH type, the pH level is 11.6 and the water temperature 11.2°C. The drainage area of the spring, like the entire Mt. Studena, is built up of Paleozoic ultramafic rocks, which geotectonically belong to the External Vardar Subzone. The spring is situated in the floodplain of the Brezanska River, whose channel is the local base level of erosion. The primary point of groundwater emergence is in solid ultramafic rocks, within a zone of fractures up to 0.5 mm wide, over a land area of ~1.5 m2. The paper describes a conceptual model of the formation of hyperalkaline water for the ascending spring in the ultramafic valley of the Brezanska River, on the northern slopes of Mt. Studena. The pH level of the groundwater is indicative of contemporary serpentinization, deep groundwater circulation and a prolonged contact between groundwater and ultramafic rocks along secondary fracture systems.", publisher = "International Multidisciplinary Scientific GeoConferences (SGEM)", journal = "Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019", title = "Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia", volume = "19", pages = "153-160", url = "https://hdl.handle.net/21.15107/rcub_cer_7158" }
Nikić, Z., Vidović, M. M., Marić, N., Trajković, I.,& Gordanić, V.. (2019). Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia. in Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019 International Multidisciplinary Scientific GeoConferences (SGEM)., 19, 153-160. https://hdl.handle.net/21.15107/rcub_cer_7158
Nikić Z, Vidović MM, Marić N, Trajković I, Gordanić V. Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia. in Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019. 2019;19:153-160. https://hdl.handle.net/21.15107/rcub_cer_7158 .
Nikić, Zoran, Vidović, Milka M., Marić, Nenad, Trajković, Ivana, Gordanić, Vojin, "Occurrence of hyperalkaline spring water in the Brezanska river, Central Serbia" in Conference Proceedings - 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 19 (2019):153-160, https://hdl.handle.net/21.15107/rcub_cer_7158 .