McMinn, Andrew (1993): (Table 1) Abundance of Pleistocene dinoflagellate cysts in ODP Site 133-820 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.785956, Supplement to: McMinn, A (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, https://doi.org/10.2973/odp.proc.sr.133.220.1993
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Abstract:
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.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -16.637000 * Median Longitude: 146.303700 * South-bound Latitude: -16.637000 * West-bound Longitude: 146.303600 * North-bound Latitude: -16.637000 * East-bound Longitude: 146.303800
Date/Time Start: 1990-09-12T08:45:00 * Date/Time End: 1990-09-15T01:40:00
Minimum DEPTH, sediment/rock: 3.71 m * Maximum DEPTH, sediment/rock: 398.24 m
Event(s):
133-820A * Latitude: -16.637000 * Longitude: 146.303800 * Date/Time Start: 1990-09-12T08:45:00 * Date/Time End: 1990-09-12T18:00:00 * Elevation: -289.0 m * Penetration: 144.3 m * Recovery: 146.14 m * Location: Coral Sea * Campaign: Leg133 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 17 cores; 144.3 m cored; 0 m drilled; 101.3 % recovery
133-820B * Latitude: -16.637000 * Longitude: 146.303600 * Date/Time Start: 1990-09-12T18:00:00 * Date/Time End: 1990-09-15T01:40:00 * Elevation: -290.0 m * Penetration: 400 m * Recovery: 324.91 m * Location: Coral Sea * Campaign: Leg133 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 44 cores; 400 m cored; 0 m drilled; 81.2 % recovery
Comment:
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.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1026 data points