1. Calculated maturity (vitrinite reflectance values: Sweeney & Burnham 1990) at the top of the Posidonia Shale unit over four time steps: (a) modelled maturity of the Posidonia Shale layer during the Late Jurassic; (b) the Early Cretaceous; (c) Eocene; and (d) the present day.
Calculated maturity (vitrinite reflectance values: Sweeney & Burnham 1990) at the top of the Posidonia Shale unit over four time steps: (a) modelled maturity of the Posidonia Shale layer during the Late Jurassic; (b) the Early Cretaceous; (c) Eocene; and (d) the present day. (e)–(h) The calculated transformation ratios for the same time steps as above; (h) the framed inset shows the transformation ratio of the Posidonia Shale by assuming source rock facies for the whole Posidonia Shale layer. The calculated transformation ratios are based on Vandenbroucke et al. (1999) TII North Sea for the Posidonia Shale source rock.
Jashar Arfai, and Rüdiger Lutz Petroleum Geology Conference series 2018;8:67-86
© 2018 The Author(s). Published by the Geological Society, London