(Table T1) Abundance of radiolarian skeletons in scrape samples of ODP Hole 178-1098B ...

• Main Author: Weinheimer, Amy L
• Format: Dataset
• Language: English
• Published: PANGAEA 2002
• Subjects: DEPTH, sediment/rock; Sample code/label; Abundance; Radiolarian preservation; Plectacantha oikiskos; Phormacantha hystrix; Lithomelissa setosa; Antarctissa strelkovi; Antarctissa denticulata; Lithomelissa sp.; Spongodiscid sp.; Rhizoplegma boreale; Dictyophimus gracilipes; Helotholus histricosa; Phormostichoartus corbula; Cromyechinus antarctica; Phorticium clevei; Larcopyle buetschlii; Peridium spinipes; Spongopyle osculosa; Spyrid group; Saccospyris antarctica; Spongotrochus glacialis group; Cycladophora bicornis; Stylodictya multispina; Sethoconus tabulatus; Lithelius nautiloides; Botryostrobus auritus/australis group; Spongurus pylomaticus; Spongurus sp.; Siphocampe arachnea group; Arachnocorallium calvata; Spongotrochus sp.; Lithelius minor; Druppatractis irregularis; Acanthosphaera corlocae; Actinomma spp.; Cycladophora davisiana; Actinomma sp.; Plectacantha sp.; Theocalyptra bicornis; Triceraspyris antarctica; Porodiscus sp.; Octopyle stenozona; Eucyrtidium hexastichum; Lithomelissa thoracites; Eucyrtidium cf. teuscheri; Euceryphalus histricosus; Dictyophimus sp.; Lithelius sp.; Antarc*; Antarctic; Antarctic Peninsula; Antarctica; Anvers Island
• Online Access: https://dx.doi.org/10.1594/pangaea.142770; https://doi.pangaea.de/10.1594/PANGAEA.142770

Palmer Deep is a series of three glacially overdeepened basins on the Antarctic Peninsula shelf, ~20 km southwest of Anvers Island. Site 1098 (64°51.72'S, 64°12.48'W) was drilled in the shallowest basin, Basin I, at 1012 m water depth. The sediment recovered was primarily laminated, siliceous, biogenic, pelagic muds alternating with siliciclastic hemipelagic sediments (Barker, Camerlenghi, Acton, et al., 1999). Sedimentation rates of 0.1725 cm/yr in the upper 25 m and 0.7-0.80 cm/yr in the lower 25 m of the core have been estimated from 14C (Domack et al., 2001). The oldest datable sediments have an age of ~13 ka and were underlain by diamicton sediments of the last glacial maximum (Domack et al., 2001).The large-scale water-mass distribution and circulation in the vicinity of Palmer Deep is dominated by Circumpolar Deep Water (CDW) below 200 m (Hofmann et al., 1996). Palmer Deep is too far from the coast to be influenced by glacial meltwater and cold-tongue generation associated with it (Domack and ... : Supplement to: Weinheimer, Amy L (2002): Data report: Radiolarians in sediments from Palmer Deep, Antarctica, Leg 178, Site 1098. In: Barker, PF; Camerlenghi, A; Acton, GD; Ramsay, ATS (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 178, 1-14 ...