The dataset is also available in different formats and can be viewed on the IRHUM database website http://rses.anu.edu.au/research-areas/archaeogeochemistry/tracing-human-migration Contact "Malte Willmes (malte.willmes@anu.edu.au), Rainer Grün (rainer.grun@anu.edu.au) Linda McMorrow, (linda.mcmorrow@anu.edu.au)" "The samples were analysed at the Environmental Geochemistry and Geochronology Laboratory at the Research School of Earth Sciences, ANU using the Neptune MC-ICP-MS" Version history 4/09/2013 V1.0 of the database. Includes all samples collected from F06-F13 and Sr isotope values for soils and plants for all of F12 Worksheet descriptions Bioavailable Sr isotope ratios France Sample ID "The sample ID can be used to identify the sample in our data tables and archives. Current standard is F-year-sample#, for example F11-02 means the second sample collected in 2011. " Researcher Names of the researchers collecting the samples "Latitude, Longitude, Elevation" Coordinates of the sample site Outcrop type We distinguish different types of outcrops: "Outcrop: A natural outcrop of rock, as far as we could identify. Not uncovered through recent human activity." "Roadcut: Along a major road, rocks unearthed by human activity." "Quarry: Outcrop created by human activity, often no longer in use." Field: A sample collected from a field or meadow. Turned over tree: A sample collected from or beneath a turned over tree that has excavated some fresh soil layers. Ground exposure: A sample collected from ~10-20 cm deep hole dug by us. Setting "This is a short description of our observations in the field, such as the proximity of human activities (agriculture, forest plantations) or clear indications of other recent influences. " Geologic background "Summary of the geologic information from the 1:1M BRGM geologic map (Chantraine et al., 2005) including the geologic region, rock type, geologic unit, major lithologies and age ranges. N_Caisson correlates to the name given to the geologic unit in the shapefile version of the geologic map and thus could be used to join the isotope data directly with the geologic map." Sample descriptions "Field observations during sample collection, such as rock, soil and plant type and characteristics. We used the Unified Soil Classification System and distinguished between Topsoil, Subsoil and Field samples" Bioavailable 87Sr/86Sr ratios Bioavailable strontium isotope ratios for soils and plants SRM987 "Compilation of the SRM987 values produced during this project between 2011-2012 at the Environmental Geochemistry and Geochronology Laboratory at the Research School of Earth Sciences, ANU." Reproducibility RSES soil is an inhouse soil standard. As most soils this standard is inhomogeneous "GEMAS Project are two soils (Ag and GR) used as a blind test for our Laboratory. They were supplied by the Gemas Project (Jurian Hoogewerff and Reimann Clemens, personal communication)" "Duplicates are samples that underwent the complete procedure multiple times, Reruns are samples ran at different times on the same Neptune MC-ICP-MS" Additional information Method Soils were leached with 1 M NH4NO3-solution according to DIN 19730 (1997-06) . Plants are total digestions in conc. HN03 Blanks "Instrument blanks were run every two samples. Total procedural blanks have been calculated to be 50-250 pg total Sr, using procedural blanks with LORBSR Spike added and measured on a TRITON mass spectrometer at RSES, ANU. Only samples were the total blank contribution was less than 0.2% of 88Sr have been accepted into the dataset" References: "Chantraine, J., Chêne, F., Nehlig, P., Rabu, D., 2005. Carte géologique de la France à 1/1 000 000 6e édition révisée 2003. BRGM." DIN 19730 (1997): Bodenbeschaffenheit – Extraktion von Spuren-elementen mit Ammoniumnitratlösung. Beuth Verlag Berlin