Search Results - "Arnorsson, Stefan"

Chromium geochemistry and speciation in natural waters, Iceland by Stefánsson, Andri, Gunnarsson, Ingvi, Kaasalainen, Hanna, Arnórsson, Stefán

“…Natural waters in Iceland were collected and analyzed for chromium concentration and speciation (CrIII, CrVI and CrTOT). The water sampled included non-thermal…”
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The geochemistry and sequestration of H2S into the geothermal system at Hellisheidi, Iceland by STEFANSSON, Andri, ARNORSSON, Stefan, GUNNARSSON, Ingvi, KAASALAINEN, Hanna, GUNNLAUGSSON, Einar

“…The geochemistry and mineralization of H2S in the geothermal system hosted by basaltic rock formation at Hellisheidi, SW Iceland, was studied. Injection of…”
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Processes controlling aquifer fluid compositions in the Olkaria geothermal system, Kenya by Karingithi, Cyrus W., Arnórsson, Stefán, Grönvold, Karl

“…The volcanic geothermal system of Olkaria in Kenya has been extensively drilled for development purposes. The well data show that the reservoir is…”
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Stable isotopes of hydrothermal minerals as tracers for geothermal fluids in Iceland by Pope, Emily C., Bird, Dennis K., Arnórsson, Stefán

“…•Isotopes as tracers for thermal waters.•Ice-age geothermal fluids.•Hydrogeological modeling.•Krafla and Reykjanes geothermal systems.•Geochemical processes…”
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Surface water chemistry at Torfajökull, Iceland—Quantification of boiling, mixing, oxidation and water–rock interaction and reconstruction of reservoir fluid composition by Bjorke, Julia K, Stefansson, Andri, Arnorsson, Stefan

“…•The surface geothermal water chemistry and alteration mineralogy associated with rhyolitic rocks at Torfajökull central volcano, Iceland was studied.•The…”
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Processes controlling Sr in surface and ground waters of Tertiary tholeiitic flood basalts in Northern Iceland by Fridriksson, Thráinn, Arnórsson, Stefán, Bird, Dennis K.

“…Strontium concentrations of 253 natural water samples from Skagafjördur, a Tertiary tholeiitic flood basalt region in northern Iceland range between 0.10 and…”
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Secondary mineral–fluid equilibria in the Krafla and Námafjall geothermal systems, Iceland by Gudmundsson, Björn Thór, Arnórsson, Stefán

“…Aquifer fluid compositions and aqueous species distribution have been calculated for 22 samples collected from producing wells in the Krafla and Námafjall…”
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Geological constraints on the thermodynamic properties of the stilbite—stellerite solid solution in low-grade metabasalts by Fridriksson, Thráinn, Neuhoff, Philip S., Arnórsson, Stefán, Bird, Dennis K.

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Silica polymerization and nanocolloid nucleation and growth kinetics in aqueous solutions by Scott, Samuel, Galeczka, Iwona M., Gunnarsson, Ingvi, Arnórsson, Stefán, Stefánsson, Andri

“…Amorphous silica precipitation from aqueous solutions at low temperatures (<100 °C) involves the initial nucleation and growth of silica polymers followed by…”
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The geochemistry of trace elements in geothermal fluids, Iceland by Kaasalainen, Hanna, Stefánsson, Andri, Giroud, Niels, Arnórsson, Stefán

“…•Trace element chemistry was studied in geothermal fluids in Iceland.•Species distribution and mobility of trace elements were assessed.•Fluid-mineral…”
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Isotope (δD, δ18O, 3H, δ13C, 14C) and chemical (B, Cl) Constrains on water origin, mixing, water-rock interaction and age of low-temperature geothermal water by Stefánsson, Andri, Arnórsson, Stefán, Sveinbjörnsdóttir, Árný E., Heinemaier, Jan, Kristmannsdóttir, Hrefna

“…The isotope (δD, δ18O, 3H, δ13C, 14C) and chemical (B, Cl) compositions of cold (streams, rivers, soil- and groundwater) and low-temperature geothermal water…”
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Isotope systematics of Icelandic thermal fluids by Stefánsson, Andri, Hilton, David R., Sveinbjörnsdóttir, Árný E., Torssander, Peter, Heinemeier, Jan, Barnes, Jaime D., Ono, Shuhei, Halldórsson, Sæmundur Ari, Fiebig, Jens, Arnórsson, Stefán

“…Thermal fluids in Iceland range in temperature from <10°C to >440°C and are dominated by water (>97mol%) with a chloride concentration from <10ppm to…”
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Molybdenum and tungsten in volcanic rocks and in surface and <100 degree C ground waters in Iceland by Arnorsson, Stefan, Oskarsson, Niels

“…The concentrations of Mo and W in tholeiite series basaltic to silicic volcanics in Iceland increase with the concentrations of incompatible magmatic elements…”
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Mantle CO2 degassing through the Icelandic crust: Evidence from carbon isotopes in groundwater by Stefánsson, Andri, Sveinbjörnsdóttir, Árný E., Heinemeier, Jan, Arnórsson, Stefán, Kjartansdóttir, Ríkey, Kristmannsdóttir, Hrefna

“…Carbon isotopes of groundwater in Iceland were studied in order to determine the source and reactions of carbon at divergent plate boundaries not associated…”
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Gas chemistry, boiling and phase segregation in a geothermal system, Hellisheidi, Iceland by Scott, Samuel, Gunnarsson, Ingvi, Arnórsson, Stefán, Stefánsson, Andri

“…The geochemistry of aquifer fluids of the Hellisheidi geothermal system, southwest Iceland, was studied. Based on samples of vapor and liquid from well…”
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Stable isotopes of hydrothermal minerals as tracers for geothermal fluids in Iceland by Pope, Emily C, Bird, Dennis K, Arnorsson, Stefan

“…The Reykjanes and Krafla geothermal systems, located within the active rift zone of Iceland, are both potential venues for exploitation of deep supercritical…”
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Assessing the sources of inorganic carbon in surface-, soil- and non-thermal groundwater in Iceland by δ13C and 14C by Sveinbjörnsdóttir, Árný E., Stefánsson, Andri, Heinemeier, Jan, Arnórsson, Stefán, Eiríksdóttir, Eydís Salome, Ólafsdóttir, Rósa

“…Chemical weathering and associated atmospheric CO2 uptake by surface water and transport of dissolved inorganic carbon (DIC) by rivers to the ocean and…”
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Geochemistry of CO2-rich waters in Iceland by Thomas, Dana L., Bird, Dennis K., Arnórsson, Stefán, Maher, Kate

“…CO2-rich waters in Iceland from volcanic systems of the Mid-Atlantic Ridge and off-rift volcanic areas of Iceland provide insights into the interactions…”
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The geochemistry and sequestration of H sub(2S into the geothermal system at Hellisheidi, Iceland) by Stefansson, Andri, Arnorsson, Stefan, Gunnarsson, Ingvi, Kaasalainen, Hanna, Gunnlaugsson, Einar

“…The geochemistry and mineralization of H sub(2S in the geothermal system hosted by basaltic rock formation at Hellisheidi, SW Iceland, was studied. Injection…”
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Arsenic in surface- and up to 90°C ground waters in a basalt area, N-Iceland: processes controlling its mobility by ARNORSSON, Stefan

“…The concentrations of As in surface- and up to 90 °C ground waters in a tholeiite flood basalt area in N-Iceland lie in the range <0.03–10 μg/kg. With few…”
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