Geysir Group Publications

2015

Kaasalainen, H., Stefánsson, A., Giroud, N., Arnórsson, S. (2015) The geochemistry of trace elements in geothermal fluids, Iceland. Applied Geochemistry 62, 207-223, http://dx.doi.org/10.1016/j.apgeochem.2015.02.003.

Stefánsson, A., Gunnarsson, I., Kaasalainen, H., Arnórsson, S. (2015) Chromium geochemistry and speciation in natural waters, Iceland. Applied Geochemistry 62, 200-206, http://dx.doi.org/10.1016/j.apgeochem.2014.07.007.

2014

Stefánsson, A., Kaasalainen, H., Keller, N.S., Gunnarssson, I., Sigfússon, B. 2014. Disequilibrium aqueous speciation and chemical energy in hydrothermal systems. Surtsey at 50 years – 2014 ICDP workshop, Vestman Islands, Iceland, September-October 2014.


Kaasalainen, H., Stefánsson, A. 2014. Iron chemistry and speciation in geothermal waters, Iceland. International Carbon Conference, Reykjavík, Iceland, August 2014.

2013

Kaasalainen, H., Stefánsson A.  (2013) Sulfur chemistry in geothermal fluids, Iceland. GSA Abstracts with Programs 45, No. 7.


Kaasalainen, H., Stefánsson A.  (2013) The chemistry of trace elements in geothermal waters, Iceland. GSA Abstracts with Programs 45, No. 7.


Stefánsson A., Gunnarsson I., Kaasalainen H. and Arnórsson S. (2013) Chromium chemistry and speciation in natural waters associated with mafic rocks, Iceland. GSA Abstract 45


Kaasalainen H., Stefánsson A., Gunnarsson I. and Arnórsson S. (2013) Chromium chemistry in natural waters, Iceland. Mineralogical Magazine 77, 1414.

2012

Kaasalainen, H. 2012. Chemistry of metals and sulfur in geothermal fluids, Iceland. Ph.D. thesis. Faculty of Earth Sciences, University of Iceland. 


Kaasalainen, H., Stefansson, A. (2012) The chemistry of trace elements in surface geothermal waters and steam, Iceland. Chem. Geol. 330, 60-85.


Lukkari K., Kujansuu S. and Kaasalainen, H. (2012) Chemical speciation of sediment phosphorus and iron suggesting burial of iron-bound phosphorus in the northern Baltic Sea. Min. Mag. 76,  2037. Goldschmidt conference, Montreal, Canada, June, 2012.

2011

Kaasalainen, H., Stefansson, A. (2011) Chemical analysis of sulfur species in geothermal waters. Talanta 85, 1897-1903 


Kaasalainen, H., Stefánsson, A. (2011) Sulphur and metal transport in active geothermal systems, Iceland. EGPD 2011, Reykjavik, Iceland.


Kaasalainen, H., Stefánsson, A. (2011) Sulphur and metal transport in active geothermal systems, Iceland – surface geothermal environments. Icelandic Geological Soc. Spring meeting 2011, 30-31.


Kaasalainen, H., Stefánsson, A. (2011) Sulphur speciation at redox disequilibrium in natural geothermal waters,Iceland. Icelandic Geological Soc. Spring meeting 2011, 28-29.


Kaasalainen, H. (2011) Tulivuori joka pysäytti Euroopan  (in Finnish). Tiede 6, 56-61.


Kaasalainen, H., Stefánsson, A. (2011) Sulfur speciation in natural hydrothermal waters, Iceland. Geochim. Cosmochim. Acta 75, 2777-2791.


Keller N.S., Stefánsson A., Kaasalainen H., Sigfússon B. (2011) Volatile Transport and Reactions in Geothermal Systems: Arsenic and Sulfur in Icelandic Hot Springs and Wells. ICGG 11, 75-76


Stefánsson A., Kaasalainen H., Lemke K., Prapaipong P., Shock W. (2011) Metal speciation and transport by geothermal and volcanic vapor. ICGG 11, 104-105.


Stefánsson, A., Arnórsson, S., Gunnarsson, I., Kaasalainen, H., Gunnlaugsson, E. (2011) The geochemistry and sequestration of H2S into geothermal system at Hellisheidi, Iceland. J.Volcanol. Geotherm. Res. 202, 179-188.

2010

Arnórsson S., Angcoy E., Bjarnason J.Ö., Giroud N., Gunnarsson I., Kaasalainen H., Karingithi C., Stefánsson A. (2010) Gas Chemistry of Volcanic Geothermal Systems. Proceedings World Geothermal Congress 2010,  Bali, Indonesia 25-29 April 2010.


Kaasalainen, H.,Stefánsson, A. (2010). Metal and sulfur transport by geothermal fluids, Iceland. Vonthing – Engineering and Natural Sciences Research symposium, University of Iceland.


Kaasalainen, H., Stefánsson, A. (2010) Sulfur speciation in natural geothermal fluids, Iceland – Kinetically or thermodynamically controlled?  Geochim. Cosmochim. Acta 74(12), Supplement 1, A487. Goldschmidt conference, Knoxville, Tennessee, June 2010.


Stefánsson, A., Arnórsson, S., Gunnarsson, I., Gysi, A.P., Kaasalainen, H., Gunnlaugsson, E. (2010) H2S and CO2 sequestration in geothermal systems. Geochim. Cosmochim. Acta 74, Suppl.1., A991. Goldschmidt conference, Knoxville, Tennessee, June 2010.

2009

Kaasalainen, H., Stefansson, A., Giroud, N., Arnórsson, S. (2009) Metal transport by geothermal and volcanic vapour. Geochim.Cosmochim. Acta 73 Supplement, A610. Goldschmidt Conference, Davos, Switzerland, July 2009.


Kaasalainen, H., Stefánsson, A., Prapaipong, P., Giroud. N., Arnórsson, S., Shock, E. (2009) Metal transport by geothermal and volcanic vapor. Eos Trans. AGU 90(52), Fall meeting Suppl., abstract V51G-04.


Motelica-Heino M., Kaasalainen H., Leivuori M., Kotilainen A. 2009. Pore water dynamics of iron, manganese and phosphate at the sediment-water interface in the Gulf of Finland (Baltic Sea) measured using DGT. ASLO Aquatic Sciences Meeting, Nice, France, January, 2009.


Stefánsson, A., Arnórsson, S., Gunnarsson, I. Kaasalainen, H. 2009. Förgun brennisteins frá Hellisheiðarvirkjun Jarðefnafræðileg athugun. Orkuveita Reykjavikur. RH-14-2009. (Report in Icelandic).


Stefansson, S., Arnórsson, S., Gunnarsson, I., Kaasalainen, H.S. (2009) H2S sequestration from Hellisheidi Power Plant – a geochemical investigation. Sci. Inst. Report, RH-14-2009.

2008

Kaasalainen, H., Stefansson, A. (2008) Metal geochemistry in surface geothermal waters in Iceland. IAVCEI General Assembly, Reykjavik, Iceland, August 2008.


Kaasalainen, H., Stefansson, A. (2008) The chemistry of sulfur in volcanic geothermal fluids. Geochim. Cosmochim. Acta 72(12) Supplement, A443.


Kaasalainen, H., Stefansson, A. (2008) Geochemistry of surface geothermal waters at Krafla and Námafjall. Science Symposium, University of Iceland, March, 2008.


Stefansson A. and Kaasalainen H. (2008) Sulfur speciation in geothermal waters, Iceland. IAVCEI 2008.

2007

Kaasalainen, H., Leivuori M. 2007. Pore water dynamics of iron and manganese in the northern Baltic Sea surface sediments. EGU General Assembly, Vienna, April, 2007. 

2006

Kaasalainen, H. (2006) Sampling sediment pore water by using DET and DGT techniques –a case study in the Gulf of Finland, the Baltic Sea. MERI –report series of the Finnish Institute of Marine Research 56, 3-48.

2005

Kaasalainen, H., Leivuori, M., Lukkari, K., Motelica-Heino, M. (2005) Assessing the use of DET and DGT techniques in phosphorus studies in the sediments of the Gulf of Finland, the Baltic Sea. In Faganeli, J., Ogrinc, N., Horvat, M. (Eds.): RMZ- Materials and Geoenvironment 52(1), 249-250. 10th International Symposium on the Interaction Between Sediments and Water, Bled, Slovenia, August- September, 2005.

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