*Hiroshi Kitazato1 (1.Tokyo University of Marine Science and Technology (TUMSAT))
B (Biogeosciences) » B-PT Paleontology
[B-PT04] Biomineralization and the Geochemistry of Proxies
Sun. May 20, 2018 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)
convener:Takashi Toyofuku(Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Hiroshi Kitazato(Tokyo University of Marine Science and Technology (TUMSAT)), Jelle Bijma(アルフレッドウェゲナー極域海洋研究所, 共同), Kotaro Hirose(Faculty of Science & Engineering, Waseda University)
Biomineralization and the Geochemistry of Proxies - Biology, laboratory culture-experiments and their applications to the paleo-research -
In order to reconstruct the Earth climate system, marine paleoclimatologists resort to transfer functions or geochemical proxies, which are produced or affected by organisms. The relationships used for reconstructions are generally based on field calibrations or derived from laboratory experiments. The danger of these so-called empirical relationships is that they may be valid only within the restricted parameter space of their calibration. Application of proxy relationships to very different environmental settings (e.g. high vs. low latitude or glacial vs. interglacial) requires a mechanistic understanding of these relationships. Much progress can be expected by a better understanding of the biomineralization mechanisms and the incorporation of proxy signals.
In this session we facilitate contributions related to the biomineralization, calibration and validation of marine proxies from field study, laboratory culture experiment and paleo-environmental reconstruction.
[BPT04-P02] Estimation of the practical partition coefficients of rare earth elements between limestone and seawater: discussion and application
*Kotaro Toyama1,2, Yasutaka Terakado2 (1.Kanazawa University, 2.Kobe University)
[BPT04-P03] Temporal size change of the planktonic foraminiferal species Paragloborotalia siakensis (LeRoy).
*Takuma Suzuki1, Hiroki Hayashi1, Osamu Sasaki2, Hiroki Matsui3, Hiroshi Nishi2 (1.Shimane University, 2.Tohoku University, 3.Center for Advanced Marine Core Research, Kochi University)
[BPT04-P04] Variation of geochemical tracers in coral skeletons (Acropora digitifera vs Porites australiensis) based on the temperature controlled culture experiment
Shoko Sakata1, *Mayuri Inoue1, Yasuaki Tanaka5, Takashi Nakamura3, Kazuhiko Sakai2, Minoru Ikehara4, Atsushi Suzuki6 (1.Department of Earth Sciences, Okayama University, 2.Tropical Biosphere Research Center, University of the Ryukyus, 3.Faculty of Science, University of the Ryukyus, 4.Center for Advanced Marine Core Research, Kochi University, 5.Faculty of Science, Universiti Brunei Darussalam, 6.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST))
[BPT04-P05] Ultra-microstructures of foraminiferal calcification observed using focused ion beam microscopy
*Yukiko Nagai1, Takashi Toyofuku2 (1.Graduate School of Environment and Information Sciences, Yokohama National University, 2.JAMSTEC)
*Takashi Toyofuku1, Yukiko Nagai3, Katsunori Kimoto1, Osamu Sasaki2 (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2.Tohoku university, 3.YNU)