Neogene Radiolarians from the Kerguelen Plateau, supplement to: Lazarus, David B (1992): Antarctic Neogene radiolarians from the Kerguelen Plateau, Legs 119 and 120. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 785-809

• Main Author: Lazarus, David B
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1992
• Subjects: Drilling/drill rig; Leg119; Leg120; Joides Resolution; Ocean Drilling Program ODP; Antarctic; Kerguelen; Weddell; Weddell Sea; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.728881; https://doi.pangaea.de/10.1594/PANGAEA.728881

Abundant, generally well-preserved radiolarians from Sites 737, 744, 745, 746, 747, 748, and 751 were used in stratigraphic analysis of Neogene, and particularly middle Miocene to Holocene, Kerguelen Plateau sediments. The composite Kerguelen section is more complete than the Weddell Sea sections recovered by Leg 113, and the radiolarians are better preserved. Leg 113 radiolarian zonations of Weddell Sea sites were applicable with only slight modification, and three new zones - Siphonosphaera vesuvius, Acrosphaeral labrata, and Amphymenium challengerae - are proposed for the latest Miocene. Geologic age estimates are given for all radiolarian zones used. Major hiatuses affecting most sites were seen within the middle Miocene, in the latest Miocene, and latest Pliocene. Five new species are described: Acrosphaera? labrata, Acrosphaera? mercurius, Siphonosphaera vesuvius, Actinomma? magnifenestra, and Helotholus? haysi.