@misc{smrzka2016gocs, author={Daniel {Smrzka} and Jennifer {Zwicker} and Andreas {Kl\"{u}gel} and Patrick {Monien} and Wolfgang {Bach} and Gerhard {Bohrmann} and J\"{o}rn {Peckmann}}, title={{Geochemistry of carbonate sample}}, year={2016}, doi={10.1594/PANGAEA.868806}, url={https://doi.org/10.1594/PANGAEA.868806}, note={Supplement to: Smrzka, D et al. (2016): Establishing criteria to distinguish oil-seep from methane-seep carbonates. Geology, 44(8), 667-670, https://doi.org/10.1130/G38029.1}, abstract={Hydrocarbon seeps harbor copious chemosynthesis-dependent life, the traces of which are preserved in the fossil record within authigenic carbonates. These environments are mostly characterized by seepage of methane-rich fluids, yet numerous crude oil-dominated seeps have been discovered in recent years. Oil seepage has a profound influence on the local fauna, but recognizing such seeps in the rock record remains elusive. This study presents new geochemical data that will allow for a more confident identification of ancient oil-seep deposits. Geochemical data from modern and ancient seep limestones reveal that oil-dominated seep carbonates are enriched in rare earth elements and uranium compared to their methane-dominated counterparts. These trace element patterns have the potential to serve as a basis for an improved understanding of the adaptation of chemosynthetic life to oil seepage, and to better constrain the marine carbon cycle in the geologic past.}, type={data set}, publisher={PANGAEA} }