JAPAN CONTRIBUTION TO THE IGCP 2010

(International Geoscience Programme)

ACTIVITY REPORT in 2010

January 2011

Japan National Committee for IGCP

1. Japan National Committee for IGCP

Dr. Shigeki Hada, Chairman Prof., Women’s University, Higashi Suma Aoyama 2-1, Suma-ku, Kobe 654-8535, Japan Phone: (81)-78-737-2330, Fax: (81)-78-731-0240, E-mail: [email protected]

Dr. Yoshiki Saito, Secretary Geological Survey of Japan, AIST, Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan Phone: (81)-29-861-3772, Fax: (81)-29-861-3533, E-mail: [email protected]

Prof. Hiromichi Hirano (434) Prof. Masatoshi Goto (491) Dr. Takashi Sakai (507) Dr. Ken-ichiro Hisada (516) Dr. Kanao Masaki (559 & National Institute of Polar Resaerch) Dr. Takashi Azuma (567) Prof. Ryuji Tada (581)

The committee consists of Chairman, Secretary, national representatives of participating IGCP projects, and guest members of related organizations.

Activities in 2010 The business meetings of the national committee in 2010 were held at the Science Council of Japan, Tokyo on February 25. The meetings reviewed activities of the year and discussed future plans. These activities were reported from a newsletter of the Geological Society of Japan. All our activities and reports will be appear in our home page: http://www.yg.kobe-wu.ac.jp/wu/igcp/

2. National Participation in IGCP Projects

IGCP-507: Paleoclimates of the Cretaceous in Asia (2006–2010) Project Leader: Yong Il Lee (Seoul National University) Co-Leader: Takashi Sakai (Kyushu University) Japanese Regional coordinator: Takashi Hasegawa (Kanazawa University)

Summary Active international communications seeded by IGCP507 are reflected in two international projects that are in active between Japan and East Asian countries as well as other international projects. They are substantial research activities directly related to IGCP507. Both projects have a bilateral exchanging system between two countries. A symposium related to IGCP507 topic was hosted and held by the Palaeontological Society of Japan, and very active discussion was made by our IGCP507 contributors. Many Cretaceous-related titles were presented during other domestic meetings, too and some of them seem to lead forthcoming earth sciences. Fifth International meeting of IGCP507 was held at Yogyakarta in Indonesia, October. Six Japanese members attended the meeting and the excursion. One of two separated issues of IGCP507 proceedings has been published on volume 19-4 of Island Arc, an official international journal of Japanese Geological Society, and the other issue is now in the process of publishing on volume 20-1 of same journal. T. Hasegawa helped editorial processes of these publications. In addition to the proceedings, IGCP507 members published 11 publications as attached at the end of this report. Japan and Mongolia joint-research Following international joint research took a step forward: Title: Reconstruction of terrestrial paleoenvironment changes during the intervals of Oceanic Anoxic Events (OAEs) from the Cretaceous Lacustrine deposits in Southeast Mongolia Organization: H. Ando (Ibaraki Univ.), H. Hasegawa (Hokkaido Univ.), T. Hasegawa (Kanazawa Univ.), T. Ohta (Waseda Univ.), M. Yamamoto (Hokkaido Univ.), N. Hasebe (Kanazawa Univ.), G. Li (Inst. Geol. & Paleont. Nanging), N. Ichinnorov and Y. Khand (Paleont. Cen., Mongolian Acad. Sci.) Subjects of investigation: Shinekhudag Formation (Aptian) in Shine Khudag area and Khootin Khotgor Formation (mid-Jurassic) in Eedemt area in Southeast Mongolia Aims: To establish detail chronostratigraphy and reconstruct terrestrial paleoclimatic (paleoweathering and paleotemperature) change by following approaches ・ Carbon-isotopic stratigraphy ・ Conchostracans biostratigrapy ・ Fission-track age dating of intercalated tuff ・ Cyclostratigraphy of rhythmically alternated paper shale ・ Major element ratios & weathering index ・ Paleotemperature reconstruction (e.g., TEX86) Field Survey in 2010 summer: The project leader (Prof. H. Ando) invited Dr. G. Li to be a member of this project for studying the conchostracan assemblages of Shinekhudag and Khootin Khotgor Formations that help correlating them with Chinese assemblages. During the field survey carried out through 18-27 August, 2010, they investigated three localities (Shine Khudag section in Shaazangiin Gobi, Eedemt section in Khootiin Khotogor area, and Khamar Khoovor section in Unegt area) for collecting additional rock samples and conchostracan fossils. Based on the study on conchostracan assemblages of Shine Khudag and Eedemt sections (collected during the tour in 2009), Dr. G. Li suggested that Eedemt section were possibly correlated to the mid-Jurassic sequence in northern (Li et al., in prep.). Thus, the project members investigated the Khamar Khoovor section in Unegt area in order to elucidate the litho- and biostratigraphic correlations of the Khootin Khotgor Formation and Khamarkhoovor Formation. In addition, the project leader (Prof. H. Ando) contacted to the New Energy and Industrial Technology Development Organization (NEDO) in Japan and Mineral Resources Authority of Mongolia (MARM) to ask for permission to study the sediment cores from Eedemt taken by East Gobi Project (Japan-Mongolian Joint Research) during 2009. Prof. H. Ando successfully got the permission from NEDO and MARM and/so the project members could take sediment samples from the Eedemt core during the tour in 2010. Study sites: Shine Khudag section in Shaazangiin Gobi, Eedemt section in Khootiin Khotogor area, and Khamar Khoovor section in Unegt area Tour member: H. Ando, T. Ohta, H. Hasegawa, G. Li and N. Ichinnorov with a Mongolian assistant. Project Meetings in Japan Two meetings were held for this project this year. (1) First meeting: Place: Ibaraki University (Mito); Date: April 24, 25 Participants: H. Ando, T. Hasegawa, H. Hasegawa, T. Ota, M. Yamamoto, N. Hasebe, G. Lee Discussions: Presentations that summarize the results of 2009 tour including geologic columns of studied sections and properties of samples were made by the participants. New results of carbon isotopes from samples taken during 2009 tour were also presented by T. Hasegawa. Strategies for further researches on the samples and for the sampling tour of 2010 were also discussed. (2) Second meeting Place: Ibaraki University (Mito), Fukui Prefectural Dinosaur Museum (FPDM at Katsuyama), Shiramine Institute for Fossil Research and Outcrop in Hakusan-city, Kanazawa University (Kanazawa). Date: October 30-November 2 Participants: H. Ando, T. Hasegawa, H. Hasegawa, T. Ota, M. Yamamoto, N. Hasebe, N. Ichinorov (invited from Mongolia for this meeting) Activity: *Oct. 30, 31 at Ibaraki University: H. Hasegawa, T. Ota and H. Ando reported details of sampling tour in August. Results of inorganic geochemistry and weathering index (T. Ota), carbon and nitrogen ratio (T. Hasegawa), TEX86 proxy (M. Yamamoto) on the previous samples were presented and discussed. Samples taken during 2010 tour was separated and distributed to each participant. *Nov. 1: The participants move to FPDM and discussed about Cretaceous environments with researchers of that museum. Participants also looked over the museum with great interest. *Nov. 2: The participants visited Shiramine Institute of Fossil Research and observed precious Cretaceous vertebrate and plant fossils that reserved at the institute. Then they moved to the outcrop called “Kaseki-Kabe (Fossil Bluff)”. The outcrop exposes Lower Cretaceous terrestrial sequence. Active discussion about paleoenvironment of the outcrop and its age were made in front of the outcrop. At Kanazawa University, discussion on samples concerning quality for radiometric and fission-track age determination was made, then they visited and looked over Hasegawa Laboratory in which the Mongolian samples were processed and analyzed. Japan and China joint-research Following international joint research took a step forward: Title: Study on carbon isotope stratigraphy and sequence stratigraphy of Early Cretaceous Yezo and Jehol Groups. Organization: H. Hirano, T. Ohta, S. Tanaka (Waseda Univ.), T. Sakai (Kyushu Univ.), T. Kozai (Naruto Educ. Univ.), and G. Li (Inst. Geol. & Paleont. Nanging) Subjects of investigation: ・ Dabeigou and Dadianji Formations in Launping area, Province, China ・ Yezo Group in Hokkaido, Japan Aims: ・ Age determination by δ13 C fluctuation patterns ・ Basin analyses and sequence stratigraphy (paleoenvironment, depositional systems, and environmental change) ・ Correlation of non-marine and marine sequences in NE Asia ・ Examination of tectonics and eustasy ・ Geochemical analysis and paleoclimate Activity: The former international joint-research project by the Japanese and Chinese joint group initially started its activity during the IGCP434. The succeeding but renewed program was planned after discussions during activity of IGCP507. The research program aims to determine the age of the Jehol Group and related formations based on carbon isotope stratigraphy and sequence stratigraphy. Another aim is to elucidate the paleoenvironment and land-ocean depositional system of the whole eastern Asian continental margin by integrating the data from China and Japan. The investigation started this year and some results were presented in international and domestic meetings. The project leader (Dr. Hirano) succeeded to invite Dr. Li to Waseda University as a JSPS fellow during October 2009 to August 2010 for having a deep discussion about the project. During his stay in Japan, he and the project members investigated the Cretaceous strata in Kanto, Shikoku and Kyushu to compare the Cretaceous systems between China and Japan, as it contains important part of this project. The result of this project has recently been accepted for publication in the Journal of Geology (Ota et al. in press; see bibliography below). International symposium 5th International Symposium of IGCP507 was held in Yogyakarta, Indonesia, on October 7-9, 2010. In the two-day main session, two keynote speeches and 19 talks were presented with subsequent active discussions. Their scientific scopes range from regional geology, isotopic stratigraphy, biostratigraphy, mineralogy and paleosol studies of terrestrial and marine sediments, tectonics, paleoenvironmental changes and igneous activities. A total of twenty one oversea participants from Korea, Japan (six persons), Philippines, India and Malaysia, and over forty Indonesian scientists gathered at the Phoenix Hotel in the downtown area of Yogyakarta City. During the one-day field excursion on October 9, the participants visited the Cretaceous melange succession in the Luk Ulo Kebumen district, Central Java. This is part of the Cretaceous accretionary wedge complex characterized by tectonic mixing of blocks of various sizes and types embedded in a sheared clay matrix. This meeting was nicely organized by Geological Agency, Energy and Mineral Resources Ministry with several university geologists. Other academic meetings Titles related to IGCP507 topic were presented during the meetings listed below. During these domestic and international meetings, following subjects related to the IGCP507 project were presented with new results: (1) Cretaceous paleoceanograpy and paleoclimate (2) Macro- and micro-fossils from Cretaceous basins in Japan and stratigraphic correlation. (3) Sequence stratigraphy and tectonics of Cretaceous basins in East Asia.

z Japan Geoscience Union Meeting 2010 (May 23-28, Chiba) z Geological Society of Japan (117th Annual Meeting, Toyama, Sept. 18-20) z Palaeontological Society of Japan (The 159th Regular meeting, January 29-31, Otsu) z Palaeontological Society of Japan (The 75th Anniversary of the Founding and the 2010 Annual meeting, June 10-13, Tsukuba) Publications related to our Cretaceous topic by IGCP507 participant Hirasawa, S., Kashwiagi, K. and Fujita, M., 2010, Marine strata and dinosaur footprints of the Upper Jurassic to Lower Cretaceous Tetori Group, Toyama Prefecture. Journal of the Geological Society of Japan, v.116 (Supplement), 103-121. Iba, Y., Sano, S., Miura, T., in press. Orbitolinid foraminifers in the Northwest Pacific: Their taxonomy and stratigraphy. Micropaleontology. Ishida, K., Hashimoto, H., Yamasaki, T., Tsujino, Y. and Kozai, T, 2010. Significance of the direct correlation of ammonite and radiolarian zones in the Izumi Group for integrated biostratigraphy of Late Cretaceous NW paleo-Pacific region. Natural Science Research Univ. Tokushima, v.24 (4), 27-31. Ishida, K., Nakazawa, T., Kozai, T. and Tsujino, Y., 2010. Radiolarian paleobiogeographic correlation for the Lower Cretaceous Nankai Group, Southern Kurosegawa Terrane, SW Japan. Proceedimgs of the 6th Symposium of the IGCP 516 E & S Asia 2010, Geological Anatomy of East and South Asia, Nov. 9-14, Kuala Lumpur (Malaysia), 49-50. Kashiwagi, K. and Hirasawa, S., 2010. Jurassic radiolarians and other microfauna recovered from the trace fossils of the Kiritani Formation of the Tetori Group in the Yatsuo area, Toyama Prefecture, northern Central Japan. Paleontological Research, v.14, 212-223. Ohta T., Li G., Hirano H., Sakai T., Kozai T., Yoshikawa T. and Kaneko A., in press, Early Cretaceous terrestrial weathering in NE China: relationship between paleoclimate change and the phased evolution of the Jehol Biota. J. Geol. Sano, S., and P. W. Skelton., in press. Epidiceras (Bivalvia, Hippuritoidea) from the Tithonian–Berriasian Torinosu-type Limestones of the Sakawa Area, Southwest Japan. Turkish Journal of Earth Sciences, v.19. doi:10.3906/yer-0905-2 Shigeta, Y., R. Hoffmann, & M. Izukura, 2010. Systematic position and origin of the Cretaceous ammonoid genus Takahashia. Paleontological Research, v. 14 (3): 196-201. Shigeta, Y., K. Tanabe, & M. Izukura, 2010. Gaudryceras izumiense Matsumoto and Morozumi, a Maastrichtian ammonoid from Hokkaidoand Alaska and its biostratigraphic implications. Paleontological Research, v.14 (3): 202-211. Yamamoto, S., Hasegawa, T., Tada, R., Goto, K., Rojas-Consuegra, R., Daz-Otero, C., Garca-Delgado, D. E., Yamamoto, S., Sakuma, H. and Matsui, T., 2010. Environmental and vegetational changes recorded in sedimentary leaf wax n-alkanes across the Cretaceous-Paleogene boundary at Loma Capiro, Central Cuba. Palaeogeography Palaeoclimatology Palaeoecology, v.295, 31-41. Yamanashi, T. and Kashiwagi, K., in press. Radiolarian ages and geological structures of the Shimanto Belt in the Kisei-Ouchiyama area of the eastern Kii Peninsula, Southwest Japan. Memoir of the Fukui Prefectural Dinosaur Museum, no. 9.

IGCP-567: Earthquake Seismology: Archaeoseismology along the Alpine- Himalayan seismic zone (2008-2012) National Working Group Leader: Dr. Takashi Azuma, Geological Survey of Japan, AIST, Site Central 7, Higashi, 1-1-1, Tsukuba, Ibaraki, 305-8567 Japan Phone: +81-29-861-2489, Fax: +81-29-861-3807, e-mail: [email protected]

Main object of the project, and target of the national working group of this year: We will progress the knowledge on the palaeoearthquakes by using the seismic damage in the archaeological relics same as the evidence in the geological method. Through this project, four workshops will be held at the archaeological sites in the Dead Sea Region, Greece, Iran and India. Japanese working group will compile the huge numbers of archaeoseismological data in Japan and will introduce them and results of study to the other countries. Achievements in 2010: We supported the Hokudan International Symposium on Active Fault 2010, as a co-hosting organization. Professor Manuel Sintubin, one of the project leaders, was invited and made a lecture on IGCP-567 in this symposium. Participation countries (for project leaders only):

Meetings held during this year or Japanese participation in the project meeting: We had a business meeting with Prof. Sintubin and several Japanese colleagues during the Hokudan International Symposium. There was no participant for the special session of the 19th Congress of the Carpathian-Balkan Geological Association at Greece on September 2010, unfortunately. The number of Japanese working group members: We act with 2 members now and still are calling for new members. Activities planned in 2011 or later: We will have a next business meeting during the XVIII INQUA Congress in July-August, 2011 in Bern, Switzerland. 2nd INQUA-IGCP567 International Workshop on Active Tectonics, Earthquake Geology, Archaeology and Engineering will take place from 19 to 24, September, 2011 in Corinth, Greece.

Publications: None

IGCP-581: Evolution of Asian River Systems: Linking to Cenozoic Tectonics, Climate and Global Geochemical Cycles (2009–2014) Project Co-Leaders: Prof. Hongbo Zheng: University, China; Prof. Ryuji Tada, University of Tokyo, Japan; Prof. Peter Clift, University of Aberdeen, United Kingdom; Dr. Masood Ahmad, National Geophysical Research Institute, India; Prof. Zheng-Xiang Li, Curtin University of Technology, Australia

National Working Group Leader: Prof. Ryuji Tada Department of Earth and Planetary Science University of Tokyo, Science Building #1 7-3-1 Hongo, Tokyo 113-0033, Japan Tel. +81-3-5841-4523, Email: [email protected]

Main object of the project: In this project, we plan to conduct a group effort to 1) use sedimentary archives, both onshore and offshore, to trace the evolutionary history of Asian big river systems, 2) correlate continental and marine tectonic and climatic records, in particular, those about the uplift of Tibetan Plateau and monsoonal evolution, and examine their interrelations, 3) study the sediment budget of Asian large rivers, and assess the contribution of erosion, chemical weathering and sedimentation in Asia to global carbon cycles, and 4) carry out numerical modeling to study the linking mechanism among tectonics, chemical weathering, and monsoon evolution during the Cenozoic. Through these studies, we hope to create a new model on the tectonics and climate linkage in East Asia and their impact on global climate, and elaborate a strategy to test the model by utilizing international sediment sampling programs such as IODP, ICDP, and IMAGES. Target of the national working group of this year: First Annual Symposium: “Cenozoic Tectonics, Landform Evolution and Climate Change in Asia” will be held at School of Earth Sciences and Engineering, Nanjing University, 22 Hankou Road, Nanjing, 210093, China from May 8 to 21, 2010, Nanjing, China. The 1st Symposium of IGCP Project-581 will comprise two parts, the presentations of scientific results (by both oral and posters), and field trip to Tibetan Plateau. The presentation section will last for two days (May 8-9, 2010) during which 3 sessions will be presented. S1: Growth of Tibetan Plateau: timing, mode and impact S2: Landform evolution and drainage development S3: East Asian monsoon evolution: terrestrial and marine records The field trip is titled “Cenozoic Tectonic and Sedimentary Geology in the Southern Tibetan Plateau”, which will go to southern part of Tibetan Plateau, and is aimed to examine how tectonics, sedimentation and landscape responded to the collision between India and Asia. Achievements in 2010: Meetings held during this year or Japanese participation in the project meeting: The First Annual Symposium of IGCP-581, with the title of “Cenozoic Tectonics, Landform Evolution and Climate Change in Asia”, was held during May 8-18, 2010, at Nanjing University, China. Sixty participants from seven countries attended the symposium. Following the symposium was a field excursion to Tibet, and 12 participants attended the field trip. Japanese participants of the meeting include Ryuji Tada, Yoshiki Saito, Tomohisa Irino, Hitoshi Hasegawa, Yoshimi Kubota (PhD student), and Tomohisa Yoshida (Master course student). The number of Japanese working group members: Japanese working group of IGCP-581 is not officially organized. But we made mailing list for IGCP-581 [email protected] in which more than 100 Japanese people are listed. Activities planned in 2011 or later: Second International Symposium titled “Evolution of Asian River Systems: Tectonics and Climates” will be held in Sapporo from June 11 to 14 this year. The symposium will comprise two parts, presentations of scientific results and a field trip. The presentation part will last for two days (June 11-12, 2011) during which 3 sessions will be presented. S1. Modern processes and geochemical cycles in Asian river systems S2: River system response to Asian monsoon variability and its impact on marginal seas: terrestrial and marine records: S3. Asian river–continental shelf systems linked to the Cenozoic tectonic and climatic evolution: Field trip titled “Geology and Geomorphology along the Ishikari River in central Hokkaido” will be held from June 13 to 14. Local Organizing Committee is lead by Masanobu Yamamoto (Hokkaido Univ.), Tomohisa Irino (Hokkaido Univ.), Hitoshi Hasegawa (Hokkaido Univ.) and Ryuji Tada (University of Tokyo). Details on the symposium is given in the home page http://geos.ees.hokudai.ac.jp/581/

Publications: 1) Clift, P. D., Tada, R. & Zheng, H. (eds), 2010. Monsoon Evolution and Tectonics–Climate Linkage in Asia. Geological Society of London, Special Publications, 342. 2) Jia J. T., Zheng H. B., Huang X. T., et al. Detrital zircon U-Pb age of late Cenozoic sediments from the Yangtze Delta: Implication for the evolution of the Yangtze River. Chinese Science Bulletin, 2010, 55, doi: 10.1007/s11434-010-0091-9. 3) Kubota, Y., Kimoto, K., Tada, R., Oda, H., Yokoyama, Y., Matsuzaki, H., Variations of East Asian summer monsoon since the last deglaciation based on Mg/Ca and oxygen isotope of planktic foraminifera in the northern East China Sea, Paleoceanography, 25, PA4205, doi:10.1029/2009PA001891, 2010. 4) Nagashima, K., Tada, R., Tani, A., Sun, Y., Isozaki, Y., Toyoda, S., Hasegawa, H. Millennial-scale oscillations of the westerly jet path during the last glacial period, Journal of Asian Earth Sciences, 2011 in press. 5) Tada, R., Zheng, H., Sugiura, N., Isozaki, Y., Hasegawa, H., Sun, Y., Yang, W., Wang, K., and Toyoda, S., Desertification and dust emission history of the Tarim Basin and its relation to the uplift of northern Tibet, in Clift, P., Tada, R., and Zheng, H. (eds.) “Monsoon evolution and tectonic-climate linkage in Asia”, Special Publication of Geological Society of London, 342, 45-65, 2010. 6) Tsukamoto, S., Nagashima, K., Murray, A. S., Tada, R. Variations in OSL components from quartz from Japan sea sediments and the possibility of reconstructing provenance, Quaternary International, 2010 in press. 7) Wang, M. J., Zheng, H. B., Xie, X. et al. A 600-year flood history in the Yangtze River drainage: Comparison between a subaqueous delta and historical records. Chinese Sci Bull, 2010, 55, doi: 10.1007/s11434-010.

8) Zheng, Y., Kissel, C., Zheng, H.B., Laj, C. and Wang, K., 2010. Sedimentation on the inner shelf of the East China Sea: Magnetic properties, diagenesis and paleoclimate implications. Marine Geology 268, 34-42. 9) Zheng, H., Tada, R., Jia, J., Lawrence, C., and Wang, K., Cenozoic sediments in the southern Tarim Basin: implications for the uplift of northern Tibet and evolution of the Taklimakan Desert, in Clift, P., Tada, R., and Zheng, H. (eds.) “Monsoon evolution and tectonic-climate linkage in Asia”, Special Publication of Geological Society of London, 342, 67-78, 2010. Activities involving other IGCP projects, UNESCO: None