Palynological data for Miocene sediments collected at Site U1521 during International Ocean Discovery Program (IODP) Expedition 374 to the Ross Sea, Antarctica
This dataset comprises palynological counts on sediments from IODP Expedition 374 Site U1521 to the Ross Sea, collected on the RV JOIDES Resolution. Marine palynomorphs are counted in 23 samples, and 7 samples were counted for terrestrial palynomorphs (pollen and spores). Shipboard biostratigraphy and magnetostratigraphy suggests the samples are early Miocene in age (McKay et al., 2019, Proceedings of the International Ocean Discovery Program).
dataset
https://doi.org/10.5285/adea0809-5fe5-4fb5-9f3e-9d774534d26d
name: Digital Object Identifier (DOI)
function: information
https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item166008
name: Data
function: download
http://data.bgs.ac.uk/id/dataHolding/13607800
eng
geoscientificInformation
publication
2008-06-01
Palynology
Miocene
NGDC Deposited Data
revision
2022
NERC_DDC
-179.6700
-179.6800
-75.6700
-75.6800
revision
2010
ROSS SEA [id=2001391]
2019-08
2021-04
creation
2021-05-19
notApplicable
Sample processing was performed at Utrecht University, following standard techniques of the Laboratory of Palaeobotany and Palynology. Samples were oven-dried and weighed (~15 g dry weight sediment each). One Lycopodium clavatum tablet with a known amount of marker spores was added for quantification of palynomorph abundances (Wood et al., 1996). Samples were treated with 10% HCl (Hydrochloric acid) and cold 38% HF (Hydrofluoric acid), then sieved over a 10 μm mesh with occasional mild ultrasonic treatment. To avoid any potential processing-related preservation bias, no oxidation or acetolysis was carried out. The processed residue was transferred to microscope slides using glycerine jelly as a mounting medium, and 2 slides were analysed per sample at 400× magnification. Slides were examined for detailed marine (dinoflagellate cysts, acritarchs and other aquatic palynomorphs) and screening-level terrestrial (pollen and spore) analysis at Utrecht University, with a subsequent detailed analysis for terrestrial palynomorphs on a sub-set of seven samples undertaken at GNS Science. Of the 23 palynological samples analysed for dinocysts, two contained <60 dinocysts (594.48 and 567.75 mbsf) and one was almost barren (yielding only 12 in situ dinocysts, 374.9 mbsf). The low abundance samples are included in our dataset; however, because of the low dinocyst yield, careful interpretation is required. Pollen and spore identification followed taxonomic compilations (Raine et al. 2011; Prebble 2016), augmented by key Antarctic literature (Askin, 2000; Askin and Raine 2000; Truswell, 1983). For pollen and spores, scanning continued until an entire cover slide was completed, or a 100 count reached. Dinocysts were identified based on a taxonomical index (Fensome and Williams, 2004) and informally and formally described species in the literature (Hannah et al., 2000; Hannah, 2006; Clowes et al., 2016; Bijl et al., 2018). Methods and full references can be found at the bottom of the data tables.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
.csv
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Research Postgraduate
Imperial College London
Royal School of Mines, Prince Consort Road
London
SW7 2BP
originator
University of Utrecht
originator
GNS Science
originator
University of Utrecht
originator
British Geological Survey
distributor
British Geological Survey
pointOfContact
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NG12 5GG
United Kingdom
+44 115 936 3100
pointOfContact
2025-03-03