The files include full analytical details and datasets from the laboratories used for the acquisition of U-Pb zircon geochronology and Lu-Hf isotope geochemistry. The data were collected in the interval September 2022 to January 2023 across a number of laboratories: Stockholm, University College London and Australian National University (U-Pb zircon geochronology); British Geological Survey (Lu-isotopes). The analyses were conducted by Teal Riley (Stockholm, British Geological Survey), Ian Millar (Australian National University) and Andrew Carter (University College London). The analyses were conducted to examine the provenance and depositional history of the Fossil Bluff Group fore arc basin sediments of Alexander Island. NERC N-ALI funding to Geology & Geophysics.

The files include full analytical details and datasets from the laboratories used for the acquisition of U-Pb zircon geochronology, Lu-Hf isotope geochemistry and 40Ar/39Ar analysis of detrital white mica. Also included are a list of all the published datasets used in the construction of the MDS and ridge plots for detailed regional comparisons. The data were collected in the interval January 2021 to March 2022 across a number of laboratories: Stockholm, University College London, British Geological Survey, Trinity College Dublin, Australian National University (U-Pb zircon geochronology); Open University (40Ar/39Ar analysis) and British Geological Survey (Lu-Hf isotopes). The analyses were conducted by Teal Riley (Stockholm, British Geological Survey), Ian Millar (Australian National University), Andrew Carter (University College London), Joaquin Bastias (Trinity College Dublin), Craig Storey (Open University). The analyses were conducted to examine the provenance and depositional history of the accretionary LeMay Group complex of Alexander Island.

Rock samples were collected from the northern LeMay Range, southern Douglas Range and the Lully Foothills of Alexander Island during the 2004-2005 field season, and transferred to the Open University (OU) via the British Antarctic Survey. Samples were stored in the OU rock store during preparation for isotopic work.

Geological analyses were conducted on rock samples collected in Dronning-Maud Land during the 2007-2008 field season. Analyses included grain-size determination, dating, whole rock and inclusion mineralogy, and geochemical analyses. All of the samples taken were of rocks that were found cropping out as nunataks. The investigation took place entirely within the the Dronning-Maud Land area of East Antarctica (Norwegian Sector).

This dataset contains geochemistry measurements and fossil diatom counts made on a sediment core from La Grange Cop lake, Marion Island (46deg94S, 37deg60E, 60 m above sea level). The dataset consists of diatom relative frequencies, diatom principal components analysis (PCA), and diatom-inferred conductivity, ITRAX scanning XRF elemental percentages and XRF PCA, C%, N%, and delta13C measurements, and magnetic susceptibility measurements. Ages of the sediment samples were assigned based on an age depth model derived from 210Pb, 137Cs, and 14C measurements and span the last c. 700 years. This project was funded by UK Natural Environment Research Council Grant NE/K004514/1 to Dominic A Hodgson and a Research Foundation-Flanders travel bursary to Elie Verleyen.

This dataset presents the relative diatom abundances of 55 species/groups from the 132-120 ka interval in marine sediment core MD03-2603 (-64.28 degN, 139.38 degE). This age interval corresponds to the peak of Marine Isotope Stage 5e (130- 116 ka). Microscope slides were prepared using a method adapted from Scherer (1994) and 300+ diatom valves were counted for each depth sample to produce the relative percentage abundance of each diatom species/group. This project was funded by the UK Natural Environment Research Council Grant NE/L002531/1

Geochemical data collected during a 40 day incubation of crushed silicate minerals (quartz and alkali feldspar). Quartz and alkali were crushed separately under an oxygen-free atmosphere using a planetary ball mill. The crushed minerals where then incubated in serum vial under with oxygen-limited water, in an oxygen-free N2 atmosphere at 4 degrees C. Headspace gases were collected before the addition of water. Then, headspace gas samples and the water samples were collected 24, 48, 120, 240, 360 and 720 hours after the addition of water. Headspace gas samples were analysed for CH4, CO2 and H2 and O2. Water fraction samples were analysed for anions and organic acids (including acetate, formate, F-, Cl-, NO2-, NO3- and SO4 2-), cations (including Na+, K+, Mg2+ and Ca2+) and total dissolved iron (dFe). The research was supported by NERC grant NE/S001670/1, CRUSH2LIFE (BGO, MT, JT) and by European Research Council (ERC) Synergy Grant DEEP PURPLE under the European Union''s Horizon 2020 Research and Innovation Program (Grant Number 856416).

Datasets related to istopic dating of mylonites and detrital grains from central Alexander Island. Argon-argon dating of mylonites and detrital grains, as well as uranium-lead dating of detrital zircons has been completed. Rock samples were collected from the northern LeMay Range, southern Douglas Range and the Lully Foothills.

Sample inventory data related to a field campaign of approximately 10 weeks, carried out during 2007-2008. The primary focus was sample collection, with the rest of the time being used for mapping. All of the samples taken were of rocks that were found cropping out as nunataks. The investigation took place entirely within the the Dronning-Maud Land area of East Antarctica (Norwegian Sector).

This dataset presents the relative diatom abundances of 55 species/groups from the 132-120 ka interval in marine sediment core ELT17-9 (-63.08degN, -135.12 degE). This age interval corresponds to the peak of Marine Isotope Stage 5e (130-116 ka). Microscope slides were prepared using a method adapted from Scherer (1994) and 300+ diatom valves were counted for each depth sample to produce the relative percentage abundance of each diatom species/group. This project was funded by the UK Natural Environment Research Council Grant NE/L002531/1