Moscati, R.J., and Hughes, A.L., 2024, Þingmúli Volcanic Complex, eastern Iceland: Pb, Sr, and Nd isotopic data, 2024: U.S. Geological Survey data release, https://doi.org/10.5066/P13NQWAA.
Summary
This dataset consists of seven lava samples that were analyzed for Pb, Sr, and Nd isotopes. The dataset accompanies the planned publication, ‘The geochemical and petrogenetic evolution of Þingmúli central volcano: Insights to magma processes in Iceland’, as well as planned future publications on this volcanic complex. Pb, Sr, and Nd isotope data were used for this study to determine both the mantle source, and the relationship between the lavas (rhyolite to basalt) found at Þingmúli. Samples were collected from Þingmúli central volcano by Amanda Hughes (Edge Hill University, UK) who sent them to the USGS Denver for analysis. The laboratory work and thermal ionization mass spectrometry (TIMS) analyses were performed from April 2024 [...]
Summary
This dataset consists of seven lava samples that were analyzed for Pb, Sr, and Nd isotopes. The dataset accompanies the planned publication, ‘The geochemical and petrogenetic evolution of Þingmúli central volcano: Insights to magma processes in Iceland’, as well as planned future publications on this volcanic complex. Pb, Sr, and Nd isotope data were used for this study to determine both the mantle source, and the relationship between the lavas (rhyolite to basalt) found at Þingmúli. Samples were collected from Þingmúli central volcano by Amanda Hughes (Edge Hill University, UK) who sent them to the USGS Denver for analysis. The laboratory work and thermal ionization mass spectrometry (TIMS) analyses were performed from April 2024 to Oct 2024.
It is currently unknown if Þingmúli is a flank zone volcano (one which receives magma from the mantle plume) or a rift zone volcano (one which receives magma from the Mid Atlantic Ridge). The Pb, Sr, and Nd isotope data will help to determine the mantle source and therefore provide a better picture of the volcanic-tectonic setting during Þingmúli’s lifespan. Additionally, analyses of all lava types at Þingmúli will provide insight into their relationship to one another, and to determine if they are related by a single fractional crystallization process. If they are not related, this will strengthen the idea that volcanoes in Iceland produce rhyolite from a different method and help explain why there is so much rhyolite and so few intermediate lavas in Iceland (Þingmúli is used as a case study for this). Data were shared to meet open data requirements.
Rights
This work is marked with Creative Commons Zero v1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/).