Electrochemistry in the field 2015-09-17 Nicole Simone Keller

The Geysir group has two visitors this week, Dr. Greg Druschel, Professor at the Indiana University - Purdue University Indianapolis (IUPUI), and Dr. Don Nuzzio, founder and president of Analytical Instrument Systems Inc. Greg and Don are collaborating with Hanna on her speciation project and iron chemistry project, and the team has been collecting samples and doing in-situ measurments using electrochemical instruments in various geothermal areas of Iceland. Greg and Don will be giving a seminar as a part of the Institute of Earth Sciences Friday Seminars Series, titled "Environmental analysis and continuous in-situ measurments using electrochemistry" on Friday 17.9.2015 in the seminar room of Askja, third floor.

Below are a few impressions from the fieldwork in Geysir:

The setup at Otherrishola, with sensors in the main spring and in the outflow.


Closeup of two temperature sensors recording the temperature fluctuations above microbial mats


Don and Greg setting the systems up


Hanna and Greg watching the live data recording

last editation Nicole Simone Keller 2015-09-17

Welcome to our new Post-Doc! 2015-09-10 Nicole Simone Keller

Welcome to the newest GEYSIR team member, Barbara Kleine. Barbara defended her PhD at Stockholm University in the spring, and has now joined our team to study the role of fluids in contact metamorphic settings by tracking them down with the help of the stable isotopes oxygen and hydrogen. We are looking forward to working with Barbara.

No rest for the weary: Shortly after Goldschmidt, GEYSIR goes sampling steam vents in Iceland. 2015-08-26 Nicole Simone Keller

After a very successful conference in Prague, members of the Geysir group barely had time to unpack their bags and repack them again - this time with field gear to go collect steam samples with Shuhei Ono and Jeemin Rhim from the stable isotope geobiology lab at MIT, and Jens Fiebig from the stable isotope lab at the Johann Wolfgang Goethe University in Frankfurt. Here a few impressions from the first day in the field, in the muddy fumarole field of Krysuvik in southwestern Iceland.

Getting ready for Goldschmidt! 2015-08-11 Nicole Simone Keller

Posters being put together and talks being rehearsed - most of GEYSIR´s members are busy getting ready for the Goldschmidt Conference in Prague, which will take place from the 16th to the 21st of August. Andri will start things off for the group on Monday at 15:30, with an invited talk on iron speciation in hydrothermal solutions. On Tuesday afternoon (17:00-19:00), Ragna will show her poster on nitrogen chemistry and speciation in geothermal waters, and Hanna will show her poster on the chemistry of Fe-II and Fe-III in hydrothermal waters. Then on Thursday, Nicole will give a talk about the geochemistry and microbiology of the Vonarskard Geothermal Area, at 15:15. On the same day, from 17:00 to 19:00, three Geysir members will be presenting their posters: Jói will be showing his work on the multiple sulfur isotope systematics of geothermal fluids in Iceland; Ríkey will be showing her results on carbon isotope systematics of icelandic low-temperature geothermal waters; and Jan will have a poster on reaction path controlled by acid supply in hydrothermal alteration in the CO2-H2O-Forsterite system. On Friday, Andri will give his keynote talk at 14:00 on the isotope systematics of geothermal fluids, and the effects of aqueous speciation, boiling and water-rock interaction. Last but not least, at 16:30, Matylda will talk about her work on multicomponent fluid chemistry of the high-enthalpy geothermal system of Krafla in NE Iceland. We are looking forward to meeting YOU at our presentations! 

Another successful meeting of COTHERM fellows in Reykjavik just ended! 2015-06-25 Matylda Heřmanská

Here are some pictures from the field trip:

Zeolites in Hvalfjörður

Andri and Bruno

High-temperature alteration in rhyolites (quarry in Hvalfjörður)

last editation Matylda Heřmanská 2015-06-25

Summer is here 2015-06-24 Nicole Simone Keller

Finally the summer has reached Iceland! Hanna is enjoying the sunshine and is collecting a sample right next to our institute for her speciation project


last editation Nicole Simone Keller 2015-06-24

First earth shaking geochemical inhouse meeting in Askja 2015-06-01 Matylda Heřmanská

Geological departement is always a place with chaotic people running around in a ,,walk&talk,, style meeting in a cafeteria once in a while only. So our group decided to organize First geochemical in-house meeting in Askja with a motto – ,,get to know your neighbor!,,. First, Andri, Siggi, Arny, Guðmundur, Eniko and Sæmi presented the equipement and what we are doing - meanwhile the meeting was brightened up by a small earthquake (4.0 M). Afterwards, we moved downstairs to discuss the real science with a glass in one hand and snacks in the other one. 


last editation Matylda Heřmanská 2015-06-01

Geysir team grows 2015-05-20 Hanna Kaasalainen

We want to introduce a new Geysir team member, Chiara Marieni, PhD student at the University of Southampton (UK), who recently joined us. Thanks to the Marie Curie training program “CO2 REACT”, she will collaborate with Reykjavik Energy and the University of Iceland for the next 6 months. Chiara will have the opportunity to be trained on the sampling of high temperature geothermal wells and to carry out some experiments on the H2S mineralisation and isotope fractionation. Welcome Chiara!


Spring trip to MIT lab 2015-05-07 Hanna Kaasalainen

Andri Stefánsson and Johann Gunnarsson from the Geysir team visited  Shuhei Ono´s lab at MIT in Boston in April. During this successful trip, multiple sulphur isotopes (32S, 33S, 34S, 36S) were analysed with the help of Suhei Ono and William J Olszewski in high temperature well fluid samples from Iceland. Another trip to continue the collaboration on multiple sulfur isotopes is planned in the near future!


Picture of the fluorination and cleaning line at MIT that prepares samples, in the form of solid silver sulfide, for analysis. These solids turn into SF6 gas, that is purified by a GC and sent into an attached MS for multiple sulfur isotope analyses.

Spring is coming - Geysir at the Iceland Geoscience Society Spring meeting 2015-04-14 Hanna Kaasalainen

Spring is still keeping us waiting for itself in Iceland, but a certain sign of it getting closer is the annual Spring meeting of the Iceland Geoscience Society.

The spring meeting was held in mid-March, and as usual, Geysir group members attended the meeting and presented some recent work on microbe-water-rock interaction. This is something that Geysir group has been working on for several years in collaboration with the microbiologists at Matis (Iceland Food and Biotech) and University of Iceland.

Hanna Kaasalainen held a talk titled as "What is for dinner? Geochemical energy from inorganic sources feeds microbial life in geothermal waters", discussing how the geochemists can contribute to the understanding of the geobiology of hot spring environments. Nicole Keller introduced the Vonarskard geothermal system that is expectionally interesting from the geobiological point of view in a talk "The Vonarskarð Geothermal System: an oasis in the desert".

The day was full of very interesting talks and discussions - and spring must really be coming soon!




last editation Hanna Kaasalainen 2015-04-14

The Holuhraun eruption ends but work continues 2015-03-09 Hanna Kaasalainen

After 6 months of activity, the Holuhraun eruption to the north of Vatnajökull has come to an end on Friday the 27th of February 2015. In order to assess the post-eruption degassing activity and to collect samples of any residual degassing, Nicole Keller from the Geysir Team and Evgenia Ilyinskaya from the British Geological Survey flew over the eruption site and collected gases from degassing vents within the main vent, Baugur, and from various sites within the lavafield. At the same time, a field team from the Institute of Earth Sciences of the University of Iceland, as well as from The Icelandic Meteorological Office, were investigating the eruption site to assess the overall situation since the end of the activity.

Nicole Keller


Picture 1 – This picture was taken on the 4th of march, and shows that there is no more fresh lava being discharged at the surface. Ground temperature is still above 100°C in certain places, with fumaroles and diffuse degassing within and around the crater.


Picture 2 - here two pictures taken from a similar angle, the first one on the left taken on the 11th of november 2014, and the second one taken on the 4th of march 2015.


Picture 3 - This photo, that was taken by pointing the camera straight down below the helicopter, shows two filter-pack assemblies hanging approximately 6m below the helicopter, or approx. 1m above the ground. The filter packs are connected to pumps inside the helicopter. These sampling devices are used to determine volcanic gas and aerosol compositions.


Picture 4 - On the way back to Reykjavik on the 4th of march, a nice aerial view of this group´s namesake: the one and only Geysir!


Another successful conference... 2015-02-26 Jan Přikryl

Matylda Heřmánská won the best poster award at 6th European Geothermal PhD Day conference in Delft Netherlands with topic: Geochemistry of the high enthalpy geothermal system in relation to IDDP-1, Krafla, NE-Iceland. Here Matylda receives congratulations from Dr. David Bruhn, professor for geothermal engineering in Potsdam. Congratulations Matylda !

GEYSIR group members receive grants from RANNIS and Landsvirkjun 2015-02-13 Hanna Kaasalainen

GEYSIR group members have been awarded grants for the year 2015 from the Icelandic Centre for Research (RANNIS) and the Energy Research Fund of the Landsvirkjun Energy Company.

Andri Stefánsson and collaborators received RANNIS project grant for a project titled as "Hydrocarbons in volcanic hydrothermal fluids".

Hanna Kaasalainen and collaborators received a project grant from the Landsvirkjun Energy Research Fund for the last year of a three year project called "Speciaion analysis in geothermal waters and waste waters".

Ragnheiður Ásgeirsdóttir was awarded a M.Sc. student grant from the Landsvirkjun Energy Research Fund. Her project studies nitrogen compounds in geothermal waters.




Just another day in the lab... 2015-02-03 Hanna Kaasalainen

Today is one of the regular days at work for the Geysir team members....regular, but important! Such days are spent collecting and analyzing data that is the basis of all those publications that one needs to write!


Jan and Léa preparing solutions to start new batch-type experiments to study seawater-olivine interaction under CO2 pressure.


Jon Örn in front of his computer, programming the new geochemical modeling software.


Ragnheiður about to finish the determination of nitrogen species concentrations in geothermal water samples.

last editation Hanna Kaasalainen 2015-02-03

Matylda Hermanska wins the AGU poster award 2015-01-20 Hanna Kaasalainen

Matylda Hermanska, Ph.D. student in the Geysir team, won the AGU fall meeting poster award in the Volcanology, Geochemistry and Petrology section

Matylda´s poster was titled as "Geochemistry of Multicomponent Fluid Phases in the Krafla High-Enthalpy Geothermal System, NE Iceland" and co-authored by Andri Stefánsson. It presented results from her PhD project on heat, fluid and mass transfer in volcanic geothermal systems and focus on groundwater-magma interaction at shallow depth in the crust and formation of high-temperature contact metamorphism. The project is part of the Swiss-Icelandic COTHERM network.

Congratulations, Matylda!


View over the Krafla geothermal area

Jóhann Gunnarsson Robin receives his M.Sc. 2015-01-09 Hanna Kaasalainen

Just before well-deserved Christmas vacation, Jóhann Gunnarsson Robin received his!

Jói held his M.Sc. lecture on the 19th December, 2014 about his M.Sc. project titled as "Multiple sulfur isotopes systematics of geothermal fluids at Krafla NE Iceland and the source and reactions of sulfur in volcanic geothermal systems", and was examined about his work by Ingvi Gunnarsson, who is a geochemist at the Reykjavík Energy. Through these photos we want to share some of the happy post-lecture moments!


Jói has been part of the Geysir group for over 3 years, during which he has not only worked on his M.Sc. project, but also gained a lot of experience through being involved in other on-going projects and setting up a new GC instrument.

Congratulations, M.Sc. Jói!


last editation Hanna Kaasalainen 2015-01-20

Happy year 2015! 2015-01-07 Hanna Kaasalainen

Geysir wishes you happy new in 2015, and wants to thank everyone for 2014 that was full of exciting science, interesting travel, swetty days in the lab and beautiful (and some stormy) days in the field!

Winter sunrise over Reykjavik, 10:30 a.m.

last editation Hanna Kaasalainen 2015-01-09

GEYSIR goes to AGU 2014-12-19 Hanna Kaasalainen

Andri, Jan and Matylda have been participating in AGU fall meeting, held in San Francisco this week. There are at least 4 poster or oral presentation from the GEYSIR group members:

  • V13A-4757 (Jan Prikryl & Andri Stefánsson: Reaction Progress of Olivine Alteration as a Function of Time and CO2 Supply at 150°C – An Experimental Study)
  • V21A-4740 (Matylda Hermanska & Andri Stefánsson: Geochemistry of Multicomponent Fluid Phases in the Krafla High-Enthalpy Geothermal System, NE Iceland)
  • GC43A-0675 (Snorri Gudbrandsson, Prathap Moola & Andri Stefánsson: H2S Injection and Sequestration into Basalt - The SulFix Project)
  • V13D-07 (Andri Stefánsson, Nicole Keller, Johann Gunnarsson Robin, Ríkey Kjartansdóttir, Shuhei Ono, Arny Sveinbjörnsdóttir: Carbon and sulfur isotopes as tracers of fluid-fluid and fluid-rock interaction in geothermal systems)

Here below are some photos from the meeting by Jan.




last editation Hanna Kaasalainen 2014-12-19

GEYSIR members involved in studying the Holuhraun eruption 2014-12-02 Hanna Kaasalainen


Now into its fourth month of ongoing activity, the Holuhraun eruption is still going strong, with a total extent of lava erupted since the onset of the eruption now reaching over 75 km2. The GEYSIR group has been involved in studying the chemistry of the gases, both using remote sensing (open-path FTIR)  and filter packs to determine S, Cl, F gases and aerosols. Gas measurements have been performed both at Holuhraun and in inhabited areas around the island. Here are a few photos from the most recent field trip to Holuhraun, which took place in early November.


Close look into Baugur, the currently active crater discharging the bulk of the lava. A lava stream flows from Baugur to the East. Photo taken by Nicole Keller from the Icelandic Coast Guard Helicopter, 11.11.2014.

Close look into Baugur, the currently active crater discharging the bulk of the lava. A lava stream flows from Baugur to the East. Photo taken by Nicole Keller from the Icelandic Coast Guard Helicopter, 11.11.2014.

The FTIR pointing at the main vent Baugur. Photo by Nicole Keller, 12.11.2014

Dense gas plume headed towards the west. Photo by Nicole Keller, 12.11.2014



last editation Hanna Kaasalainen 2014-12-02

Holuhraun fissure eruption and GEYSIR in action! 2014-10-06 Matylda Heřmanská

Last week our team booked the flight to the eruption site and was amazed by the beauty of mother nature. Here is a blog about this wonderful moment with images from the eruption. Check it out !

Air pollution due to the Holuhraun eruption! 2014-10-06 Matylda Heřmanská

The first indication of unrest was a seismic swarm under Bárðarbunga. The Holuhraun eruption was first observed almost one month ago (with the initial eruption starting in the early hours of the 29th August 2014). At the time of writing (6th October 2014) the second eruption has shown little or no evidence of decreasing activity. Cooling lava from the eruption, now covering almost 45 km2, emmits volcanic gasses (mainly H2O, SO2 and CO2, with possible minor components of CO, H2S, HCl or HF). Once the gases are released from the lava, the prevailing airstream can blow the plume hundreds to thousands kilometers from the eruption. The gases spread from an erupting vent primarily as acid areosols (tiny acid droplets) attached to e.g. microscopic salt particles.

Due to the observed high concentration of these gases, the government of Iceland approved a plan for monitoring the air pollution in which the GEYSIR group should take part.

The first (pilot) 5-day  monitoring study revealed concentrations of almost 6 ppm of SO2 and 15 ppm CO in the vicincity of the eruption site. The most frequent direction of the plume is east, east – north or less east-south, where the plume is characterized as a yellowish haze which can cause irritation of the nose, throat, and eyes.

The plan in future is to set up sampling spots (passive samplers) for precipitation all over the country as well as the regular monitoring of aerosols.


Nicole with the cooling lava front wearing gas mask and gas sensor for personal


Pinkish plume above the area between Myvatn and Dreki.

Field set-up for measurement of aerosols and gas sensor on the roof of the house.

See also

Bárðarbunga eruption-update

Distribution of the gas from the eruption (in Icelandic only)

Jan Přikryl 2014-10-06

This Monday (29/9/2014) Ríkey defended her Master thesis! Congratulations! 2014-10-06 Matylda Heřmanská

last editation Jan Přikryl 2014-10-06

The International Carbon Conference (ICC) in Iceland 25-29th August 2014 2014-09-11 Jan Přikryl

ICC conference was held in Iceland during August 25-29th 2014, around 120 researchers attended the conference and five European project networks participated (MINSC, CarbFix, CO2-React, MetTrans and NORDICCS network).

The honorable president of Iceland Ólafur Ragnar Grímsson officially opened the conference with an inspirational speech. The ICC conference featured lectures from invitational speakers related to carbon storage followed by a poster session where the young researchers presented their work.

The conference included a field course to teach sampling techniques to the researchers. The course included three different stations in the area of the Hellisheiði geothermal power plant: 1) CO2 injection well, 2) surface geothermal formations and fluids, and 3) high temperature geothermal well fluid.

The last two nights of the conference were spent on a field trip to Þórsmörk including a visit to Selijalandsfoss, Eyjafjallajökull volcano and hiking around Þórsmörk natural reserve area.

Photo courtesy: Martin Voigt, Matylda Hermanska and Andrea Perz

last editation Matylda Heřmanská 2014-10-06

COTHERM project meeting in Iceland 10th-13th September 2013 2013-10-25 Hanna Kaasalainen

COTHERM project meeting was held in Iceland during the 10th-13th September 2013. One day of the meeting was used to introduce and discuss the various on-going project and synergies between them during a workshop organized by GEORG at Iceland GeoSurvey. The rest of the meeting focused on visiting the geothermal systems in Iceland and discussions between the GEORG participants, and all together three days were spent mostly in the field visiting the Krafla and Reykjanes geothermal systems and powerplants as well as the Golden Circle, with plenty of time for discussions.

Cotherm group members admiring the geothermal system and visiting the powerplant at Krafla.

COTHERM project aims on constructing an integrated, dynamic geochemical model of geothermal systems at Reykjanes and Krafla ( It involves members from University of Iceland, ETH Zurich and Paul Scherrer Institute in Switzerland.

last editation Jan Přikryl 2014-09-29

Geysir at Goldschmidt 2013 2013-10-18 Hanna Kaasalainen

Behind are those sunny days in August when majority of the Geysir group travelled to Florence, Italy! It was a busy week that started with MSA short course "Thermodynamics of geothermal fluids" organized by Andri together with Thomas Driesner and Pascale Benezeth, and continued with the Goldschmidt conference.

There were many presentations, both posters and talks, given by the Geysir group members during the Goldschmidt conference covering quite a range of topics. Jan presented a poster about CO2-olivine interaction experiments and modelling, and Prathap about reactive transport of hydrological tracers. Our new Ph.D. student, Matylda, had a poster about her M.Sc. work on mineral-fluid interactions in tin-bearing greisens, and Snorri about plagioclase dissolution rates he did for his Ph.D. Hanna had a talk about chromium chemistry in natural waters, Nic about sulfur isotopes in volcanic geothermal fluids and Andri presented a study about metal bicarbonate and carbonate interactions. The abstracts are listed in our publication list if you are interested. Also, it is worth of checking out the MSA Reviews volume!

There were lots of interesting talks and posters and new and old friends and collegues in Goldschmidt this year, as always!

Andri and Prathap having a deep scientific (?) discussion in a beutiful Florentian evening. 

last editation Jan Přikryl 2014-09-29

New website 2013-08-13 Jan Přikryl

New Geysir research group website has arrived! Here you can find information about our research, group members and team activities. In near future you could find useful lab protocols, MSDS files etc. too.Team name Geysir is acronym and means Geochemical Evaluation of hYdrothermal Solutions and their Interaction with Rocks. 

Website is still in beta stage and under intensive development.

last editation Jan Přikryl 2014-09-29