Proc. IODP, 329, Data report: radiolarian occurrences at IODP Expedition 329 Site U1371

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Abstract Introduction Methods and materials Slide preparation Radiolarian taxonomy and zonal schemes Microscope examination and radiolarian abundance conventions Results Acknowledgments References Figures F1. Site location map. F2. Radiolarian occurrences. F3. Downhole properties and age model. F4. Age model radiolarian events. F5. Age-depth plot. Tables T1. Radiolarian abundances. T2. Radiolarian marker species depths. Plate P1. Radiolarians. PDF file			Previous \| Next doi:10.2204/iodp.proc.329.202.2015 Data report: radiolarian occurrences at IODP Expedition 329 Site U1371¹ Giuseppe Cortese² and Carlos A. Alvarez Zarikian³ Abstract In this report we present a radiolarian biostratigraphy for the uppermost 108 m recovered during Expedition 329 at Integrated Ocean Drilling Program Site U1371. This interval of clay-bearing diatom ooze contains well-preserved remains of siliceous microfossils. Below 108 meters below seafloor (mbsf), the sediment lithology changes to zeolitic clay, which does not contain any biosiliceous material. Twenty-eight radiolarian marker species, used as age-indicative taxa in both middle- and high-latitude radiolarian biozonation schemes, have been recognized at this location and allow age control for the uppermost ~100 m of the cored section, with an estimated age of 8.2 Ma at 101.4 mbsf. These results match well those from a parallel study based on diatom biostratigraphy. ¹ Cortese, G., and Alvarez Zarikian, C.A., 2015. Data report: radiolarian occurrences at IODP Expedition 329 Site U1371. In D’Hondt, S., Inagaki, F., Alvarez Zarikian, C.A., and the Expedition 329 Scientists, Proc. IODP, 329: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.329.202.2015 ² GNS Science, PO Box 30 368, Lower Hutt 5040, New Zealand. g.cortese@gns.cri.nz ³ International Ocean Discovery Program, Texas A&M University, 1000 Discovery Drive, College Station TX 77845, USA. Initial receipt: 4 February 2014 Acceptance: 30 June 2015 Publication: 2 September 2015 MS 329-202 Top of page \| Previous \| Next