35. Data Report: Taxonomic Notes of Neogene Diatoms from the Western Antarctic Peninsula: Ocean Drilling Program Leg 1781

Masao Iwai2 and Diane Winter3


During Ocean Drilling Program Leg 178 we cored nine sites on the continental rise (Sites 1095, 1096, and 1101), continental shelf (Sites 1097, 1100, 1102, and 1103), and in an inner shelf basin, Palmer Deep (Sites 1098 and 1099), along the Pacific margin of the Antarctic Peninsula. Fossil diatoms are a key group that provides age constraint for these shelf site sediments to allow reconstruction of Antarctic Peninsula glacial history. This paper provides the systematic paleontology of diatoms applied in biostratigraphic and paleoceanographic studies and includes a total of 33 plates. Taxonomic confusion in previous reports, including biostratigraphically useful species such as Thalassiosira inura and Thalassiosira complicata, is discussed. These systematics and taxonomic discussions help to provide a reference for Neogene diatoms in the Southern Ocean.

1Iwai, M., and Winter, D., 2002. Data report: Taxonomic notes of Neogene diatoms from the western Antarctic peninsula: Ocean Drilling Program Leg 178. In Barker, P.F., Camerlenghi, A., Acton, G.D., and Ramsay, A.T.S. (Eds.), Proc. ODP, Sci. Results, 178 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/178_SR/chap_35/chap_35.htm>. [Cited YYYY-MM-DD]

2Department of Natural Environmental Science, Kochi University, Kochi 780-8520, Japan. iwaim@cc.kochi-u.ac.jp

3Academy of Natural Sciences, Patrick Center for Environmental Research, Philadelphia PA 19103, USA.

Initial receipt: 25 January 2002
Acceptance: 31 July 2002
Web publication: 1 November 2002
Ms 178SR-239