(Table 1) Abundance of Pleistocene dinoflagellate cysts in ODP Site 133-820


Compared with other Australian marine Quaternary locations, Site 820's dinoflagellate cyst assemblages are low in both abundance and diversity. Abundances are between < 1 and 14 cysts/cm3 , and the number of species is between 7 and 14 per sample. The dominant species are Operculodinium israelianum, Spiniferites bulloideus, Spiniferites hyperacanthus and Tuberculodinium vancampoae, which together usually make up more than 75% of the assemblage.The rareness of Protoperidinium spp., taxa usually associated with nutrient enrichment, suggests that upwelling was not a regular feature of this region during the Quaternary.The relative dinoflagellate abundance, which indicates changes in the position of the coastline, shows the presence of several sea-level events, particularly near the base of the sequence. Here, they parallel at least two upward-coarsening cycles in the sediment record. Further comparison is hindered by too large a sampling interval.

Sediment depth is given in mbsf. Count is the total number of dinoflagellate cysts in the sample; if fewer than 10 specimens were found, then the number of specimens rather than the percentage abundance is given.

Supplement to: McMinn, Andrew (1993): Quaternary dinoflagellate cyst distribution at Site 820, Great Barrier Reef. In: McKenzie, JA; Davies, PJ; Palmer-Julson, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 133, 93-95

DOI https://doi.org/10.1594/PANGAEA.785956
Related Identifier https://doi.org/10.2973/odp.proc.sr.133.220.1993
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.785956
Creator McMinn, Andrew ORCID logo
Publisher PANGAEA
Publication Year 1993
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1026 data points
Discipline Earth System Research
Spatial Coverage (146.304W, -16.637S, 146.304E, -16.637N); Coral Sea
Temporal Coverage Begin 1990-09-12T08:45:00Z
Temporal Coverage End 1990-09-15T01:40:00Z