Japan Geoscience Union Meeting 2015

Presentation information

Oral

Symbol B (Biogeosciences) » B-PT Paleontology

[B-PT27] End-Proterozoic/Phanerozoic biodiversity change: extinction and radiation

Sun. May 24, 2015 11:00 AM - 12:45 PM 104 (1F)

Convener:*Yukio Isozaki(Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo), Yusuke Sawaki(Tokyo Institute of Technology), Chair:Yukio Isozaki(Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo)

12:33 PM - 12:36 PM

[BPT27-P02] Middle-Late Ordovician biodiversification and relevant environmental changes in Estonia

3-min talk in an oral session

*Momoko SHIMATSUKA1, Yukio ISOZAKI2, Tomomi KANI3, Akira ISHIKAWA4 (1.Department of Earth and Planetary Science - Graduate School of Science, The University of Tokyo, 2.Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Gr, 3.Department of Earth and Environmental Sciences, Kumamoto University, 4.Department of Earth Science and Astronomy, The University of Tokyo)

Following up the 'Cambrian explosion' , marine biodiversity increased dramatically during the Ordovician, as known as the 'Great Ordovician Biodiversification Event' (GOBE). Estonia in central Batoscandia provides excellently continuous Ordovician sedimentary package for detailed analysis. We are analyzing the drilled core samples of the Middle-Upper Ordovician strata (ca. 150 m-thick) collected from Velise in central Estonia, in order to clarify litho-, bio-, and isotope stratigraphy of C and Sr, and to reveal the cause and processes of the GOBE. We will report on our preliminary results.