Geochemistry of sediment cores CE18011_VC1 and RH17002_VC7

A remotely operated vehicle mounted (ROV) vibrocorer rig acquired the two cores from the Porcupine Bank Canyon (NE Atlantic) and western Porcupine Bank (NE Atlantic) during the RH17002 and CE18011 research cruises. RH17002_VC7 is a 0.81 m ROV-vibrocore and was acquired from a cold-water coral mound summit on lip of the Porcupine Bank Canyon. CE18011_VC1 is a 1.30 m ROV-vibrocore and was acquired from cold-water coral mound summit on the western Porcupine Bank. Grain size analysis of the siliclastic fraction of the sediment were used to infer changes in hydrodynamic regime (i.e. mean grain size and mean sortable silt size). δ13C and δ18O were determined from planktic foraminifera (Globigerina bulloides) and benthic foraminifera (Cibicidoides pachyderma) to infer watermass variation.