Articles | Volume 41, issue 1
J. Micropalaeontol., 41, 1–27, 2022
https://doi.org/10.5194/jm-41-1-2022
J. Micropalaeontol., 41, 1–27, 2022
https://doi.org/10.5194/jm-41-1-2022

Research article 07 Feb 2022

Research article | 07 Feb 2022

Astronomical calibration of late middle Eocene radiolarian bioevents from ODP Site 1260 (equatorial Atlantic, Leg 207) and refinement of the global tropical radiolarian biozonation

Mathias Meunier and Taniel Danelian

Related subject area

Stratigraphy
Liberating microfossils from indurated carbonates: comparison of three disaggregation methods
Charlotte Beasley, Daniel B. Parvaz, Laura Cotton, and Kate Littler
J. Micropalaeontol., 39, 169–181, https://doi.org/10.5194/jm-39-169-2020,https://doi.org/10.5194/jm-39-169-2020, 2020
Short summary
New composite bio- and isotope stratigraphies spanning the Middle Eocene Climatic Optimum at tropical ODP Site 865 in the Pacific Ocean
Kirsty M. Edgar, Steven M. Bohaty, Helen K. Coxall, Paul R. Bown, Sietske J. Batenburg, Caroline H. Lear, and Paul N. Pearson
J. Micropalaeontol., 39, 117–138, https://doi.org/10.5194/jm-39-117-2020,https://doi.org/10.5194/jm-39-117-2020, 2020
Short summary
Dinocyst and acritarch biostratigraphy of the Late Pliocene to Early Pleistocene at Integrated Ocean Drilling Program Site U1307 in the Labrador Sea
Aurélie Marcelle Renée Aubry, Stijn De Schepper, and Anne de Vernal
J. Micropalaeontol., 39, 41–60, https://doi.org/10.5194/jm-39-41-2020,https://doi.org/10.5194/jm-39-41-2020, 2020
Short summary
Identification of the Paleocene–Eocene boundary in coastal strata in the Otway Basin, Victoria, Australia
Joost Frieling, Emiel P. Huurdeman, Charlotte C. M. Rem, Timme H. Donders, Jörg Pross, Steven M. Bohaty, Guy R. Holdgate, Stephen J. Gallagher, Brian McGowran, and Peter K. Bijl
J. Micropalaeontol., 37, 317–339, https://doi.org/10.5194/jm-37-317-2018,https://doi.org/10.5194/jm-37-317-2018, 2018
Short summary

Cited articles

Agnini, C., Fornaciari, E., Raffi, I., Catanzariti, R., Pälike, H., Backman, J., and Rio, D.: Biozonation and biochronology of Paleogene calcareous nannofossils from low and middle latitudes, Newsl. Stratigr., 47, 131–181, https://doi.org/10.1127/0078-0421/2014/0042, 2014. 
Bjørklund, K. R.: Radiolaria from the Norwegian Sea, Leg 38 of the Deep Sea Drilling Project, in: Initial Reports of the Deep Sea Drilling Project, 38, edited by: Talwani, M., Udintsev, G., Bjørklund, K., Caston, V. N. D., Faas, R. W., Kharin, G. N., Morris, D. A., Müller, C., Nilsen, T. H., van Hinte, J., Warnke, D. A., and White, S. M., U.S. Govt. Print. Office, Washington, DC, USA, 1101–1168, https://doi.org/10.2973/dsdp.proc.38.131.1976, 1976. 
Blome, C. D.: Radiolarians from Leg 122, Exmouth and Wombat Plateau, Indian Ocean, in: Proceedings of the Ocean Drilling Program, Scientific Results, 122, edited by: Haq, B. U., von Rad, U., O'Conneü, S., Bent, A., Blome, C. D., Borella, P. E., Boyd, R., Bralower, T. J., Brenner, W. W., de Carlo, E. H., Dumont, T., Meville, E., Qalbrun, B., Golovchenko, X., Görür, M., Ito, M., Lorenzo, J. M., Meyers, P. A., Moxon, I., O'Brien, D. K., Oda, M., Sarti, M., Siesser, W. Q., Snowdon, L. R., Tang, C., Wilkens, R. H., Williamson, P., and Wonders, A. H., Ocean Drill. Program, College Station, TX, USA, 633–652, https://doi.org/10.2973/odp.proc.sr.122.165.1992, 1992. 
Blueford, J.: Radiolarian biostratigraphy of siliceous Eocene deposits in central California, Micropaleontology, 34, 236–258, https://doi.org/10.2307/1485754, 1988. 
Boulila, S., Vahlenkamp, M., De Vleeschouwer, D., Laskar, J., Yamamoto, Y., Pälike, H., Kirtland Turner, S., Sexton, P. F., Westerhold, T., and Röhl, U.: Towards a robust and consistent middle Eocene astronomical timescale, Earth Planet. Sc. Lett., 486, 94–107, https://doi.org/10.1016/j.epsl.2018.01.003, 2018. 
Download
Short summary
This study presents the biostratigraphic analysis of radiolaria (siliceous zooplankton) from a section of middle Eocene age located in the equatorial Atlantic. Our study allows the refinement of the age of 71 radiolarian bioevents. Based on a comparison with previously reported ages in the equatorial Pacific and northwestern Atlantic, we establish the synchronicity of several bioevents between the two oceans. Some of these synchronous bioevents were used to define seven new subzones.