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Browsing Háskóli Íslands by Subject "Jarðefnafræði"
Now showing items 1-12 of 12
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-01)The Breiðdalur volcanic system, eastern Iceland, comprises of a ~600 km3 central volcano, a 30 - 40 km long dyke swarm and plateau basalts erupted from this dyke swarm. The entire volcanic system was active from 10.1 to 7.8 Ma, the central volcano was ... -
(American Geophysical Union (AGU), 2019-12-03)The Central Asian Pamir Mountains (Pamirs) are a high-altitude region sensitive to climatic change, with only few paleoclimatic records available. To examine the glacial-interglacial hydrological changes in the region, we analyzed the geochemical ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2022)As high latitude regions continue a decades-long trend of warming at roughly twice the rate of the global average, an understanding of their climatic histories becomes increasing important for predicting their future. Organic molecular proxies preserved ...
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(Springer Nature, 2017-01-25)Quartz is a common phase in high-silica igneous rocks and is resistant to post-eruptive alteration, thus offering a reliable record of magmatic processes in silicic magma systems. Here we employ the 75 ka Toba super-eruption as a case study to show ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2021-10)In this study, the magmatic evolution and the eruptive history of the Paka volcanic complex are investigated and its geothermal reservoir is assessed. The study comprises two parts. The first part deals with the eruptive history, magma evolution, and ...
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Rapid CO2 mineralisation into calcite at the CarbFix storage site quantified using calcium isotopes (Springer Science and Business Media LLC, 2019-04-30)The engineered removal of atmospheric CO 2 is now considered a key component of mitigating climate warming below 1.5 °C. Mineral carbonation is a potential negative emissions technique that, in the case of Iceland’s CarbFix experiment, precipitates ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-04)Iceland’s position at the confluence of major oceanic and atmospheric fronts results in a highly sensitive climate evident in both instrumental and paleo records. However, open questions still remain regarding the pre-instrumental evolution of climate, ...
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(Springer Nature, 2021-10-30)Morphometric analyses are based on multiparametric datasets that describe quantitatively the shapes of objects. The stochastic nature of fracture-formation processes that break up magma during explosive eruptions yields mixtures of particles that have ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2022-02-25)Volatile species (e.g., H2O, He, B, CO2, S, Cl) and their isotopes in volcanic materials provide a unique, but underexplored archive of information about magmatic processes and planetary evolution. This study aims to improve our understanding regarding ...
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(Springer Nature, 2021-12-27)The morphological and textural features of juvenile pyroclasts record crucial details on magma conditions at the time of fragmentation. Their study is therefore essential to better understand the dynamics of explosive eruptions. Unfortunately, the ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2023-03)The chemical interaction between seawater and basalt at low temperatures (≤150°C) ranks among the more significant factors controlling the composition of seawater and the oceanic crust. However, the time-integrated geochemical and petrographic outcomes ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2021)Flood lavas (FL), or high magnitude (1–100 km3) basaltic fissure eruptions have a recurrence interval of 250–500 years in Iceland. These events can produce atmospheric volcanic pollution at tropospheric–stratospheric levels via their sulfur (S) emissions. ...
Now showing items 1-12 of 12