Planktonic foraminifera assemblage data spanning the mid Pleistocene (400-800 ka) of IODP Site 306-U1314 from the North Atlantic Ocean ...

• Main Authors: Alonso-Garcia, Montserrat, Sierro, Francisco Javier, Flores, José-Abel
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: mid-Pleistocene transition; North Atlantic; Planktonic foraminifera assemblage; Event label; Latitude of event; Longitude of event; Sample code/label; Device type; DEPTH, sediment/rock; Chronology; Age model; Sample, dry mass; Density, dry bulk; Size fraction; Split; Neogloboquadrina pachyderma; Neogloboquadrina incompta; Neogloboquadrina dutertrei; Globigerina bulloides; Globoconella inflata; Globigerinita glutinata; Orbulina universa; Globigerinella siphonifera; Globorotalia scitula; Globorotalia truncatulinoides sinistral; Globorotalia truncatulinoides dextral; Turborotalita quinqueloba; Globigerinita uvula; Globigerinoides ruber albus; Globorotalia crassaformis; Globorotalia hirsuta; Beella digitata; Indeterminata; Drilling/drill rig; DSDP/ODP/IODP sample designation; IODP Depth Scale Terminology; Calculated; Counted per split; Exp306; Joides Resolution; Arctic; Foraminifera*; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.968803; https://doi.pangaea.de/10.1594/PANGAEA.968803

Planktonic foraminifera assemblage data spanning the mid Pleistocene (ca. 400-800 ka) of IODP Site 306-U1314 from the North Atlantic Ocean. The assemblage data were generated to assess changes in the position of the Arctic front on millennial time scales across the study interval. Prior to foraminifera counting, the sediment samples were washed over a 63 micrometer sieve, dried (at 40 degC) and sieved again at 150 micrometer. Counts were made manually using a stereomicroscope (approx 250 magnification) on aliquots of the samples containing at least 234 specimens. Split size is indicated to allow calculation of the concentration and accumulation rate of planktonic foraminifera. The taxonomic concept used to identify the taxa is based on the criteria compiled by mikrotax.org. However, counts of the (sub)species Globigerinoides ruber (albus) may include individuals of G. elongatus, since these subspecies were not differentiated. All specimens present in the samples are reported and the proportion of ... : This dataset upgraded version of doi:10.1594/PANGAEA.820283 that only reported relative abundances of some of the species. In addition, compared to the previous version, this dataset contains more details on the methodology, sample ID and an updated taxonomy. In this update, the variants N. pachyderma sinistral and N. pachyderma dextral are now listed as separate species (N. pachyderma and N. incompta, respectively) and the taxonomy of G. ruber has been clarified. Lumping: in the publication it was defined % subtropical species =N. dutertrei+O. universa+G. truncatulinoides+G. ruber+G. crassaformis+G. hirsuta+B. digitata; and % subpolar-transitional species= N. incompta+G. bulloides+ G. inflata. ...