JpGU Meeting 2018
Session outline| Biogeosciences(B) | ||
|---|---|---|
| Session Sub-category | Complex & General | |
| Session ID | B-CG10 | |
| Title | Phanerozoic biodiversity change: Extinction and diversification | |
| Short Title | Phanerozoic biodiversity | |
| Main Convener | Name | Yukio Isozaki |
| Affiliation | Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo | |
| Co-Convener 1 | Name | Yusuke Sawaki |
| Affiliation | The University of Tokyo | |
| Session Language | JJ | |
| Scope | Biotic evolution was the consequence of repeated extinction and following diversification in the past, which was caused by large-scale environmental changes, in particular, by extremely rapid and drastic forcing that changed the environments of the biosphere. Irreversible and episodic changes in material cycling on the planet and in galactic cosmic radiation are nominated as major driving mechanism for the alleged rapid, large-scale environmental perturbations. The biodiversity change in the fossiliferous Phanerozoic record is characterized by 5 major mass extinctions within the long-term trend of diversity increase. Nonetheless, each extinction event has been explained rather in ad hoc manner, without any universal explanation. This session discusses the Phanerozoic biodiversity change under a new light of the recent progress in geology. | |
| Presentation Format | Oral and Poster presentation | |
| Invited Authors |
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| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 21 AM1 | ||||
| 09:00 - 09:15 | BCG10-01 | Revision of the earliest Cambrian SSF stratigraphy: Litho- and SSF stratigraphy of the Xiaolantian section in the Chengjiang area, Yunnan, South China | KONO SENA | Abstract |
| 09:15 - 09:30 | BCG10-02 | Age and depositional environment of the Silurian to Devonian “tentaculite”-black shale on the Malay Peninsula | Sachiko Agematsu | Abstract |
| 09:30 - 09:45 | BCG10-03 | δ88Sr and 87Sr/86Sr variations in Middle-Upper Permian seawater | Tomomi Kani | Abstract |
| 09:45 - 10:00 | BCG10-04 | Sulfur and carbon isotope profiles for Guadalupian-Lopingian paleo-atoll carbonates in Japan | Teruyuki Maruoka | Abstract |
| 10:00 - 10:15 | BCG10-05 | Late Guadalupian(Permian) lithostratigraphy of the topmost Iwaizaki limestone in NE Japan | Tomoyo Tobita | Abstract |
| 10:15 - 10:30 | BCG10-06 | Temporal change in morphological disparity relative to taxonomic diversity in ammonoids | Takao Ubukata | Abstract |
| Oral Presentation May 21 AM2 | ||||
| 10:45 - 11:05 | BCG10-07 | P/T Boundary and C60 Fullerenes - A Materials Science Perspective - | Hisanori Shinohara | Abstract |
| 11:05 - 11:20 | BCG10-08 | Clues to extraterrestrial material in old sedimentary rocks: A case study on helium-3 from the Permian/Triassic boundary | Naoto Takahata | Abstract |
| 11:20 - 11:35 | BCG10-09 | Cosmoclimatological driver for mass extinction | Yukio Isozaki | Abstract |
| 11:35 - 11:50 | BCG10-10 | Ecological and Redox condition changes during the end-Triassic Mass Extinction at St. Audrie’s Bay, UK | Calum Peter Fox | Abstract |
| 11:50 - 12:05 | BCG10-11 | Research on late Cenozoic diatomites in Kenyan Great Rift Valley: evolution under the environment analogous to that of the Hadean age | Hisashi Suzuki | Abstract |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 21 Core Time | |||
| BCG10-P01 | Polycyclic Aromatic Hydrocarbons during the Recovery from the end-Permian Mass Extinction in the Norwegian Sea | Calum Peter Fox | Abstract |
| BCG10-P02 | Volcanism-related natural radioactivity and its potential influence on ecosystem in the Great Rift Valley system in east Africa | Hiroki Sato | Abstract |
| BCG10-P03 | Enigma of Species Extinction and Mystery of Origin of Deep Ocean Floor, using Abduction by "Multi-Impact Hypothesis" along with Origin of Moon and Plate Tectonics, able to validate simultaneously using Results of one time Evolution |
Akira Taneko | Abstract |
| BCG10-P04 | Reconstruction of marine Os-isotope record from upper Aptian to lower Albian to shed light on the relationships between Oceanic Anoxic Event 1b and massive volcanic activities | Hironao Matsumoto | Abstract |
| BCG10-P05 | Carbon-cycle perturbations in the deep Iapetus during the Great Ordovician Biodiversification Event | Wataru Fujisaki | Abstract |
| BCG10-P06 | Re-interpretation of Anglesey-Lleyn geotectonic framework in terms of the Pacific-type orogenic evolution | Hisashi Asanuma | Abstract |
| BCG10-P07 | Quantitative estimation of continental weathering rate in the Ediacaran and Cambrian evidenced from radiogenic and stable Sr isotope ratios | Yusuke Sawaki | Abstract |