| Short title | Marine Mn Deposits | 
	
		| Oral presentation Date/Room/Chair
 | May 23 AM1 (09:00 - 10:45) | 203 | Akira Usui 
			/ Katsuhiko Suzuki | 
	
		| Poster presentation Date/Room
 | May 23 (Core Time 18:15 - 19:30) | Convention Hall | 
	
		| Contact | Akira Usui | 
	
		| Email | a-usui@cc.kochi-u.ac.jp | 
	
		| Convener | Akira Usui 
			/ Yoshio Takahasi 
			/ Takashi Ito 
			/ Katsuhiko Suzuki | 
	
		| Scope | The ferromanganese oxide deposits are integrated precipitates of hydrogenetic iron and manganese oxide with minor useful metal elements. The recent exploration of the deposits using ROV mapping and deep-sea drill provide us with new findings on mineralogy, geochemistry, microbiology, and physical engineering. The session reposts the results of munti-disciplinary, multi-institutional investigation of origin, growth process, resource potential of hydrogenetic and diagenetic ferromanganese nodules and crusts in the Northwestern Pacific oceans. | 
	
		| Notes | The same as the first convener. For alternatives, co-conveners or speakers will chair the session. | 
	
		| Time | Presentation No | Title | Author | Presenter | Abstract | 
	
		| Oral Presentation   May 23 AM1 (09:00-10:45) 203                              to the top | 
	
		| 09:00 - 09:15 | MIS33-01 | Growth history of Fe-Mn crusts in the northwest Pacific Ocean: Insights from trace element and Os isotope geochemistry | Kosuke T. Goto Tatsuo Nozaki
 Katsuhiko Suzuki
 other
 | Kosuke T. Goto | English | 
	
		| 09:15 - 09:30 | MIS33-02 | Milankovich cycle and environmental changes recorded in a ferromanagnese crust  from northwestern Pacific | Hirokuni Oda Isoji MIYAGI
 Akira Usui
 | Hirokuni Oda | English | 
	
		| 09:30 - 09:45 | MIS33-03 | Diversity, abundance and spatial distribution of microbes on hydrogenetic ferro-manganese crusts of northwest Pacific | Shota Nitahara Shingo Kato
 Akihiko Yamagishi
 | Shota Nitahara | English | 
	
		| 09:45 - 10:00 | MIS33-04 | Chemical processes in marine system of various elements in ferromanganese crusts and nodules based on speciation by XAFS | Yoshio Takahashi TERUHIKO KASHIWABARA
 DAISUKE ARIGA
 other
 | Yoshio Takahashi | English | 
	
		| 10:00 - 10:15 | MIS33-05 | Features of distribution pattern of cobalt-rich ferromanganese crusts on the Micronesian and Marshall Islands seamonts | Nobuyuki Okamoto Akira Usui
 | Nobuyuki Okamoto | English | 
	
		| 10:15 - 10:30 | MIS33-06 | Manganese Deposits Formation through the Earth History | Takashi Ito | Takashi Ito | English | 
	
		| 10:30 - 10:45 | 3-min talk in an oral session@(MIS33-P01/MIS33-P02/MIS33-P03/MIS33-P04/MIS33-P05) | 
	
		| Presentation No | Title | Author | Presenter | Abstract | 
	
		| Poster Presentation   May 23  Core Time (18:15-19:30) Convention Hall                    to the top | 
	
		| MIS33-P01 | Growth Process and Metal Accumulation of Hydrogenetic Ferromanganese Crusts: Joint Study in the NW Pacific Seamounts | Akira Usui Hisaaiki, Sato
 Keisuke Nishi
 other
 | Akira Usui | English | 
	
		| MIS33-P02 | Iron isotopic composition of marine ferromanganese deposits | Kyoko Yamaoka David Borrok
 Akira Usui
 | Kyoko Yamaoka | English | 
	
		| MIS33-P03 | Chemical Relationship between spatially coupled suspended particles and the crust surface | Tomoya Niiyama Ayaka Tokumaru
 Tetsuro Urabe
 other
 | Yohey Suzuki | English | 
	
		| MIS33-P04 | Dual Structure of Ferromanganese Crusts in the Pacific Seamounts: Significance as Resources and Paleoceanographic Record | Keisuke Nishi Akira Usui
 Nakasato Yoshio
 other
 | Keisuke Nishi | English | 
	
		| MIS33-P05 | Uniqueness and commonality of prokaryotic community structures between ferromanganese crusts and hydrothermal polymetall | Shingo Kato Shota Nitahara
 Akihiko Yamagishi
 | Shingo Kato | English |