The data provides a summary of volcanic ash samples collected from around Anak Krakatau, Indonesia, in August 2019, originating from the December 2018 eruption. The ash was generated in eruptions immediately following the sector collapse of Anak Krakatau. The data provides a summary of sample locations, brief information on the sample context (original notebook entries for the field sites, alongside summary stratigraphic descriptions), componentry information for selected ash samples, laser-diffraction grain-size information for the ash samples, whole rock XRF compositional analysis of selected samples, and EPMA mineral analyses from selected samples.

Published paper associated with NERC grant NE/F011091/1. Price, G.D., Twitchett, R.J., Wheeley, J.R., Buono, G. 2013. Isotopic evidence for long term warmth in the Mesozoic. Scientific Reports, 3, 1438. doi: 10.1038/srep01438

Two categories of data are presented: 1) Experimental data of catalyst performance under conditions for a Blast Furnace Gas (BFG) to methanol to process, comprising the monitored gas phase species evolution in a single channel micro reactor. 2) Process simulation and techno-economic analysis of the BFG-to-methanol process, comprising Aspen Plus V10 anotated process flowsheet, process model summary, stream results, reactor performances and cost analysis calculation. Funded by UKCCSRC 2018 Flexible Funding Call

Data and associated papers. Ocean acidification and the Permo-Triassic mass extinction. Ediacaran metazoan reefs from the Nama Group, Namibia. NERC Grant Re-inventing the planet: The Neoproterozoic revolution in oxygenation, biogeochemistry and biological complexity.

Data collected as part of the NERC funded Radioactivity and the Environment (RATE), Long-lived Radionuclides in the Surface Environment (Lo-RISE), research consortium.This data comes from the marine workstream group based at the Scottish Universities Environmental Research Centre (SUERC) and the Scottish Association for Marine Science (SAMS). The data consists of radionuclide measurements of environmental and biological samples including radiocarbon, caesium (137), americium (241) and plutonium (238, 239, 240).The data has been published in the following publications: Tierney et al., 2018. Modelling Marine Trophic Transfer of Radiocarbon (14C) from a Nuclear Facility. Ecosystem Modelling and Software 102, 138-154. Tierney et al., 2017. Nuclear Reprocessing-Related Radiocarbon (14C) Uptake into UK Marine Mammals. Marine Pollution Bulletin 124, 43-50. Muir et al., 2017. Ecosystem Uptake and Transfer of Sellafield-Derived Radiocarbon (14C). Part 1: The Irish Sea. Marine Pollution Bulletin 114, 792-804. Tierney et al., 2017. Ecosystem Uptake and Transfer of Sellafield-Derived Radiocarbon (14C). Part 2: The West of Scotland. Marine Pollution Bulletin 115, 57-66 Tierney et al., 2016. Accumulation of Sellafield-derived 14C in Irish Sea and West of Scotland Intertidal Shells and Sediments. Journal of Environmental Radioactivity 151, 321-327.

Geochemical analyses of melt inclusions, host minerals, and glasses from the 2014-15 Holuhraun eruption, Iceland. Published in: Hartley ME, Bali E, Neave DA, Maclennan J, Halldorsson SA (2018) Melt inclusion constraints on petrogenesis of the 2014–2015 Holuhraun eruption, Iceland. Contrib Mineral Petrol 173:10. doi:10.1007/s00410-017-1435-0

The dataset contains condensed results of seismic refraction survey, that can be regarded as “hard data”. Data files Syczyn-1_P.ASC and Syczyn-1_S.ASC represents tables obtained for line Syczyn-1, wave P and wave S respectively; Data files Syczyn-2_P.ASC and Syczyn-2_S.ASC represents tables obtained for line Syczyn-1, wave P and wave S respectively. Each file contains 4 columns: Record No. – sequential record identifier; Source location – distance from the beginning of the line to the (current) source point (in meters); Receiver location – distance from the beginning of the line to the given receiver (in meters); First Break – delay time between emission of the wave to its arrival at the given receiver point (seconds). Dataset is formatted in simple table, that can be imported to other seismic software for modelling velocity field. Different computing algorithms generate slightly different velocity models, so it can be useful to have hard data for comparison.

This dataset is of laboratory ultrasonic shear wave measurements during methane hydrate formation in water saturated Berea sandstone using pulse echo method. We formed methane hydrate and took shear wave measurements during the formation process at different time interval. The hydrate saturation was calculated from measured pressure and temperature changes. This data set was used to show how shear wave velocity and attenuation can be used to estimate permeability of hydrate-bearing geological formations. We observed that velocity and attenuation both increase with hydrate saturation, with two peaks in attenuation at hydrate saturations of around 6% and 20% that correspond to changes in gradient of velocity. These laboratory experiments were conducted in National Oceanography Centre, Southampton by Sourav Sahoo with technical support provided by Laboratory Manager Laurence North. Sourav Sahoo interpreted the data. The hydrate formation process continued for few days and measurements were done mostly during daytime due to limited laboratory access during the night. This data set has been used for the paper published in Journal of Geophysical Research: Solid Earth (DOI 10.1029/2021JB022206)

Zeta potential measurements of rare earth element enriched apatite from Jacupiranga, Brazil under water and collector conditions. Zeta potential measurements can be used to indicate the surface behaviour of a mineral under different reagent conditions. Mineral surface behaviour is important in processing and extracting minerals from their host ore, which can be energy intensive. Apatite is a phosphate mineral which can become enriched with rare earth elements. Rare earth elements are important in a wide range of products from iPhones to wind turbines.

All paleointensity data gathered from the project at University of Liverpool. The data is divided into multiple four letter coded sections which refer to a specific locality and/or experiment type. The sections are as follows: CFEH - Thermal paleointensity experiment on natural clinkers from Montana, USA, looking primarily at the Epsilon Hematite phase, with an additional high-power alternating field demagnetisation step after each infield step of the experiment. LPRM - volcanic material from Kinghorn and Wormit Bay, Scotland (335 and 410 million years old). This was a specific experiment with samples given a prior high temperature applied field of 80 micro Tesla and a pressure remanent magnetisation of 80 micro Tesla. VFSS – a microwave paleointensity experiment carried out on Scottish vitrified fort material, sampled in the 1980s. WTBY – microwave paleointensity experiments carried out on Scottish volcanics from Wormit Bay. Sampled September 2015. YDSR – volcanics from Yandiniling Dike Swarm, in Yilgarn Craton, Australia, 2.6 billion years old. Sampled Nov 2018. Sampled with Yebo Li from the University of Curtin (Perth) as part of a collaboration, resampling of 16WDS sites from his palaeodirections paper. These were microwave demagnetisation (specimen orientation only) and paleointensities. NERC grant NE/P00170X/1.