(1)Publications with review

Refereed Original Papers

1) Noritoshi Suzuki, Satoshi Yamakita, Satoshi Takahashi, Masayuki Ehiro, Middle Jurassic radiolarians from carbonate manganese nodules in the Otori Formation in the eastern part of the Kuzumaki-Kamaishi Subbelt, the North Kitakami Belt, Northeast Japan, Journal of Geological Society of Japan 113, 247-277, 2007. (In Japanese with English abstract)

2) Masayuki Ehiro, Satoshi Yamakita, Satoshi Takahashi, Noritoshi Suzuki, Jurassic accretionary complexes of the North Kitakami Belt in the Akka-kuji area, North Japan，Journal of Geological Society Japan 114, 121-139, 2008. (In Japanese with English abstract)

3) Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki, Kunio Kaiho, Masayuki Ehiro, High organic carbon content and a decrease in radiolarians at the end of the Permian in a newly discovered continuous pelagic section: a coincidence?, Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 271, 1-12, 2009.

4) Satoshi Takahashi, Masahiro Oba, Kunio Kaiho, Satoshi Yamakita, Susumu Sakata, Panthalassic oceanic anoxia at the end of the Early Triassic: a cause of delay in the recovery of life after the end-Permian mass extinction, Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 274, 185-195, 2009.

5) Masahiro Oba, Masahiro Nakamura, Yoshihiko Fukuda, Masatoshi Katabuchi, Satoshi Takahashi, Masataka Haikawa, Kunio Kaiho, Benzohopanes and diaromatic 8(14)-secohopanoids in some Late Permian carbonates. Geochemical Journal, The Geochemical Society of Japan, 43, 29-35, 2009.

6) Satoshi Takahashi, Kunio Kaiho, Masahiro Oba, Takeshi Kakegawa, A smooth negative shift of organic-carbon isotope ratios at an end-Permian mass extinction horizon in central pelagic Panthalassa, Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 292, 532-539, 2010.

8) Kunio Kaiho, Masahiro Oba, Satoshi Takahashi, Yoshihiko Fukuda, Seiji Koga, Zhong-Qiang, Chen, Satoshi Yamakita, An abrupt decrease in atmospheric oxygen by massive release of hydrogen sulfide during the end-Permian mass extinction. Journal of Earth Science 21, Special Issue, 141-142, 2010.

9) Yuichiro Nishikane, Kunio Kaiho, Satoshi Takahashi, Charles M. Henderson, Noritoshi Suzuki, Mizuho Kanno　The Guadalupian–Lopingian boundary (Permian) in a pelagic sequence from Panthalassa recognized by 　　integrated conodont and radiolarian biostratigraphy, Marine Micropaleontology 78, 84-95, 2011.

10) Rie S. Hori, Satoshi Yamakita, Minoru Ikehara, Kazuo Kodama, Yoshiaki Aita, Toyosaburo Sakai, Atsushi Takemura, Yoshihito Kamata, Noritoshi Suzuki, Satoshi Takahashi, K. Bernhard Spörli, Jack A. Grant-Mackie, Early Triassic (Induan) Radiolaria and carbon-isotope ratios of a deep-sea sequence from Waiheke Island, North Island, New Zealand, Palaeoworld 20, 2011, 168-178.

11) Kunio Kaiho, Masahiro Oba, Yoshihiko Fukuda, Kosuke Ito, Shun Ariyoshi, Paul Gorjan, Yuqing Riu, Satoshi Takahashi, Zhong-Qiang Chen, Jinnan Tong, Satoshi Yamakita, 2012 in press, Changes in depth-transect redox conditions spanning the end-Permian mass extinction and their impact on the marine extinction: Evidence from biomarkers and sulfur isotopes. Global and Planetary Change, in press.

12) Ryosuke Saito, Kunio Kaiho, Masahiro Oba, Satoshi Takahashi, Zhong-Qiang Chen, Jinnan Tong, A terrestrial vegetation turnover in the middle of the Early Triassic, Global and Planetary Change, in press.

13) S. Takahashi, K. Kaiho, R. Hori, P. Gorjan, T. Watanabe, S. Yamakita, Y. Aita, A. Takemura, K.B. Sporli, T. Kakegawa, Sulfur isotope profiles in the pelagic Panthalassic deep sea during the Permian-Triassic transition, submitted to Global Planetary Changes in press.

Review Papers

1) Satoshi Takahashi, Masayuki Ehiro, Noritoshi Suzuki, Geology of North Kitakami Belt: Jurassic accretionary complex in western Akka district, Iwaizumi town (summary report), Geology of Iwate vol. 35-36, Associate of Geologic education Iwate, 65-70, 2006. (in Japanese Non-refereed)

2) Satoshi Takahashi, Satoshi Yamakita, Noritoshi Suzuki, Kunio Kaiho, Masayuki Ehiro, The end-Permian Mass extinction: the newly discovered Permian-Triassic boundary, Geology of Iwate 39, Associate of Geologic education Iwate，1-11, 2009.　(in Japanese, Non-refereed)

Books

1. Satoshi Takahashi, Noritoshi Suzuki,　5.4 Conodont：searching deep-sea fossil age，In: Yoshihiro Tanimura, Akihiro Tsuji (Eds.), Microfossil, National museum of nature and science museum library13, Tohkai University Press，pp. 273-275. (in Japanese)

2. Satoshi Takahashi, Noritoshi Suzuki, Yuichiro Nishikane,　4.1.6 Conodont,　 In: Yoshihiro Tanimura, Akihiro Tsuji (Eds.), Microfossil, National museum of nature and science museum library13, Tohkai University Press，pp.125-133. (in Japanese)

Selected Conference Presentations

International Conferences

1)○Satoshi Takahashi, Kunio Kaiho, Masahiro Oba, Takeshi Kakegawa, A smooth negative shift of organic-carbon isotope ratios at an end-Permian mass extinction horizon in central pelagic Panthalassa, International Geobiology Conference, Wuhan, China, June, 2010. (oral presentation, reviewed)

2)○Satoshi Takahashi, Kunio Kaiho, Masahiro Oba, Satoshi Yamakita, Noritoshi Suzuki, Masayuki Ehiro, Takeshi Kakegawa, Shin-ichi Yamasaki, Yasumasa Ogawa, Kazuhiko Kimura, Takahiro Watanabe, Takeyoshi Yoshida, Noriyoshi Tsuchiya , Paleontological and Geochemical Studies of the Latest Permian-Early Triassic Deep-Sea Sedimentary Rocks, B3-06, G-COE symposium 2012 Achievements of GCOE Program for Earth and Planetary Dynamics and the Future Perspective, Sendai, Japan, 27　September, 2012 (oral presentation, invited)

Total number of presentations is 15

Domestic Conference

1. 1)○Satoshi Takahashi, Kunio Kaiho, Satoshi Yamakita, Masahiro Oba, Takeshi Kakegawa, Takahiro Watanabe, Shin-ichi Yamasaki, Yasumasa Ogawa, Kazuhiko Kimura, Noriyoshi Tsuchiya Takeyoshi Yoshida, Susumu Sakata, Noritoshi Suzuki, Masayuki Ehiro, Paleontological and Geochemical Studies of the Latest Permian-Early Triassic Deep-Sea Sedimentary Rocks, Reconstruction of palaeo-environmental variations during the end-Permian mass extinction and its aftermath at the pelagic super-ocean, ID13(Invited), Geochemical Society Japan, Hokkaido University, Sapporo, September 2011，(in Japanese, Oral，Invited)．
   

2)○Satoshi Takahashi，Research achievement on Permian-Triassic boundary section in the North Kitakami Mountains，65th symposium the association for the geological collaboration Japan, Hirosaki University，Hirosaki, August 2011，(in Japanese, Oral, Invited)．

Total number of presentations is 60

Contributions to Academic Community

1. The election management committee of Geological society Japan，April 2011-March 2012

Contribution for Society

1. Donation of polished rock specimen of Permian-Triassic boundary for Iwate prefectural museum，June 2009.

2. Lecturer of 59th field trip of Iwate prefectural museum, 4 July 2010.

3. Lecturer of “Kojunsya” environmental research association, 2 June 2011.

4. Carrier-up class for “Ohkashiwa” primary school, Tokyo, 9 February, 2011

5. Carrier-up class for “Suwadai” Junior school, Tokyo，30 June, 2012.

6. Lecturer in “Rainbow concert”，Nara, 13 October, 2012.

Media articles (all article are written in Japanese)

1. Mass extinction boundary section from Iwaizumi town, discovered by Tohoku University research group，Daily Iwate (Iwate Nippou)，7 February 2009, top article.　

2. Achievement of geological study by Takahashi from Kitakami city, Daily Iwate (Iwate Nippou),　8 February 2009, page 20.

3. The key to mystery of mass extinction，Daily Iwate evening edition (Iwate Nippou), 16 February 2009, page 4.

4. Geologic strata of mass extinction, Asahi shimbun Miyagi edition，14 March 2009, page 12.

5. Sea-reptile in ancient ocean of Tohoku, Asahi shimbun,　19 September 2011.