Coral content in sediment core CE18011_VC1 and RH17002_VC7

DOI

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 (CoCoHaCa I; https://www.ucc.ie/en/media/research/marinegeo/mgpdfs/Cruise-Report_Final_CoCoHaCa.pdf) and CE18011 (CoCoHaCa II; https://www.ucc.ie/en/media/research/marinegeo/mgpdfs/Cruise-Report-CoCoHaCa-II.pdf) research cruises. RH17002_VC7 (Latitude 51.9892, Longitude –15.0129) is a 0.81 m ROV-vibrocore and was acquired on the 2017-06-21 at 17:55:00 from 651 water depth from a cold-water coral mound summit on lip of the Porcupine Bank Canyon. CE18011_VC1 (Latitude 51.9829, Longitude –14.9995) is a 1.30 m ROV-vibrocore and was acquired on the 2018-08-05 at 15:28:00 from 660 water depth from cold-water coral mound summit on the western Porcupine Bank. Coral content and coral clast size were determined using three-dimensional computed tomography. To construct a geochronological framework, mixed benthic foraminifera (Cibicides lobatulus, Cibicides refulgens and Discanomalina coronata), monospecific planktic foraminifera (Globigerina bulloides) and cold-water coral pieces (Madrepora oculata) were subjected to radiometric analysis. Results were standardized using PaleoDataView (http://dx.doi.org/10.5194/cp-15-2067-2019) to allow applicability and consistency across synthesis. Benthic foraminifera assemblages were analysed from both cores. There abundances were used to infer paleoenvironmental signals between 9.1 to 5.6 ka BP, and used concurrently with coral content percentages derived from computer tomography. The data was collected by identifying and counting benthic foraminifera from the >125 µm fraction of sediment from the cores. 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. This data will be submitted to Marine Geology, until the manuscript name of O'Reilly et al - Environmental Forcing by Submarine Canyons: Evidence Between Two Closely Situated Cold-Water Coral Mounds (West Porcupine Bank and Porcupine Bank Canyon, NE Atlantic).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.945393
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.945393
Provenance
Creator O'Reilly, Luke
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2022
Funding Reference Horizon 2020, 818123; Science Foundation Ireland, SFI 16 IA 4528
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 2 data points
Discipline Earth System Research
Spatial Coverage (-15.013W, 51.983S, -15.000E, 51.989N); Porcupine Bank