Time constraints on hydrocarbon migration and caprock formation recorded by calcite spar in a Carboniferous- Permian carbonate-evaporite succession, Finnmark Platform, Barents Sea Malcolm S.W. Hodgskiss 1 , Nivedita Thiagarajan 2 , Yue Wang 1 , Niels Rameil 3 , Harald Brunstad 3 , Erik Hammer 3 , Jon Halvard Pedersen 3 , Kalle Kirsimae 4 , Atle Mørk, Aivo Lepland 1, 4 1 Geological Survey of Norway, Trondheim 7040, Norway 2 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA 3 Lundin Norway AS, Lysaker 1366, Norway 4 Department of Geology, University of Tartu, Tartu 50411, Estonia MATERIALS The following photographs show calcite spar-native sulfur nodules that were sampled and analyzed in this study. The nodules range in size from <1 to >5 cm in diameter. Only nodules containing calcite spar or calcite spar and native sulfur were sampled – nodules containing only native sulfur were not studied. To produce material for stable isotope ratio analyses, small holes were drilled directly into the ~4 cm wide drill core (Figures S1 – S10). 200 µm polished ‘thick’ sections for geochronological analyses were prepared from 2.5 cm ‘plugs’ drilled directly out of the drill core. Figure S1. Sample 20.67 Figure S2. Sample 25.74 Hodgskiss, M.S.W., et al., 2022, Time constraints on hydrocarbon migration and caprock formation recorded by calcite spar in a Carboniferous–Permian carbonate-evaporite succession, Finnmark Platform, Barents Sea: Geology, v. 50, https://doi.org/10.1130/G50244.1