Analysis and interpretation of chemostratigraphic data for others, including analysis and interpretation of elemental compositions of solids, slurries, and liquids taken from cuttings and rock samples at the well site; providing laboratory-based petrology and sedimentology support services, namely, collecting and analysing data related to regional stratigraphic and intra-reservoir correlations, calibrating and interpreting gamma logs, and developing lab-based correlation frameworks for the well site