[S-CG63] [EE] Crust-Mantle Connections / Hard-Rock Drilling

2017年5月24日(水) 15:30 〜 17:00 ポスター会場 (国際展示場 7ホール)

コンビーナ:田村芳彦(海洋研究開発機構　海洋掘削科学研究開発センター)、道林克禎(静岡大学理学部地球科学科)、高澤栄一(新潟大学理学部地質科学科)、Katy Jane Chamberlain(JAMSTEC)、森下知晃(金沢大学理工研究域自然システム学系)、Henry JB Dick(Woods Hole Oceanographic Institution)、Mark K Reagan(University of Iowa)、Susanne M Straub(Lamont Doherty Earth Observatory of Columbia University)

A number of IODP expeditions have focused on hard-rock drilling over the last decade including Expedition 352 in 2014, which drilled the volcanic sequence associated with subduction initiation in the Bonin fore-arc, and Expedition 360, which drilled the lithosphere associated with ultraslow-spreading at the Southwest Indian Ridge in 2016. In this session, we review the current status of our understanding for oceanic lithosphere and island arc formation or anything important beyond and discuss significant issue to be answered by up-coming/future hard-rock drilling. Preliminary results from the recent Expeditions are also welcome. The session also seeks to explore the crust-mantle connections among ophiolites, at divergent and convergent plate boundaries and ocean island settings. Crustal thickness and composition are correlated on ocean islands where the spatial variability in erupted magma compositions is reflected in the composition of the crust. To what extend to crustal composition reflect those of the primary melts? How diverse is the spectrum of primary melts and which factors may contribute to its variations? What is the influence of crustal processing vs. primary magma diversity in creating the diversity of the Earth's crust? The session invites contributions from interdisciplinary field ranging from geophysics, geochemistry, petrology, engineering and biology working on hard-rock cores/samples from the expeditions or any other research vessels as well as on-land geology such as ophiolites.

[SCG63-P01] The earliest stage of Izu rear arc volcanism revealed by drilled cores at Site U1437, IODP Expedition 350

*佐藤智紀¹、宮崎隆¹、田村芳彦¹、Gill James²、Jutzeler Martin^3,4、仙田量子^5,1、木村純一¹ (1.国立研究開発法人海洋研究開発機構、2.カリフォルニア大学サンタクルーズ校、3.ナショナルオセアノグラフィーセンター、4.タスマニア大学、5.九州大学)

[SCG63-P02] Reconstruction of proto-arc basalt lava emplacement at the Amami Sankaku Basin

*草野有紀¹、石塚治¹、Hickey-Vargas Rosemary²、McCarthy Anders³、Yogodzinski Gene⁴ (1.産業技術総合研究所　地質調査総合センター、2.Florida International University、3.University of Lausanne、4.University of South Carolina)

[SCG63-P03] Forward modeling of the magma genesis for the deepest lithostratigraphic unit at Site U1437, IODP Expedition 350

*宮崎隆¹、佐藤智紀¹、田村芳彦¹、木村純一¹、Gill James²、Hamelin Cedric³、堀江憲路⁴、仙田量子⁵、Vaglarov Bogdan S.¹、原口悟¹、常青¹ (1.国立研究開発法人海洋研究開発機構、2.UCSC、3.University of Bergen、4.国立極地研究所、5.九州大学)

[SCG63-P04] Asthenospheric contribution to magmatism at the active rift zone in the northern Izu-Bonin arc

*平井康裕¹、吉田尊智^1,5、岡村聡¹、坂本泉²、新城竜一³、和田恵治⁴ (1.北海道教育大学大学札幌校、2.東海大学海洋学部、3.琉球大学理学部、4.北海道教育大学旭川校、5.仁木町立仁木中学校)

[SCG63-P05] Discovery of low-Ca, high-Si boninites from the northern Zambales Ophiolite: Doubly-vergent subduction initiation along Philippine Sea Plate margins

*Americus Perez¹、Susumu Umino¹、Graciano Yumul Jr.²、Osamu Ishizuka³ (1.Kanazawa University、2.Apex Mining Company Inc.、3.Geological Survey of Japan)

[SCG63-P06] Amphibolites and a garnetite: Geodynamic implications of crustal lithologies from the southeast Mariana fore-arc

*道林克禎¹、Mark Reagan²、小原泰彦⁵、Luan Heywood²、Kathleen Goff²、Thomas Foster Jr.²、Brian Jicha³、Thomas Lapen⁴、William MacClelland²、Minako Righter⁴、Sean Scott⁶、Kenneth Sims⁶ (1.静岡大学理学部地球科学科、2.University of Iowa、3.University of Wisconsin、4.University of Houston、5. 海上保安庁、6.University of Wyoming)

[SCG63-P07] Direct evidence of hydration into mantle during shearing below a transform fault: Prince Edward transform fault, Southwest Indian Ridge

*道林克禎¹、柿畑優季¹、Henry Dick² (1.静岡大学理学部地球科学科、2.ウッズホール海洋研究所)

[SCG63-P08] Mantle heterogeneity under Hawaii site of M2M

*小野重明¹ (1.独立行政法人海洋研究開発機構)

[SCG63-P09] Petrological diversity of abyssal peridotites from the ultraslow-spreading Gakkel Ridge, Arctic Ocean

*森下知晃¹、針金由美子²、曽田祐介¹、田村明弘¹、橋本諭¹、じょなさんすのう³ (1.金沢大学、2.産業技術総合研究所地質調査総合センター、3.ヒューストン大学)

[SCG63-P10] Petrological and geochemical diversity of mantle section revealed by comparison between northern and southern Oman ophiolite

*高澤栄一^1,2、石井慶佑³、野本有希³、田村芳彦² (1.新潟大学理学部地質科学科、2.海洋研究開発機構海洋掘削科学研究開発センター、3.新潟大学大学院自然科学研究科)

[SCG63-P11] Geochemistry of Wadi Tayin mantle section in the southern Oman mantle section with special reference to suprasubduction zone magmatism

*石井慶佑¹、高澤栄一^2,3、田村芳彦³ (1.新潟大学大学院自然科学研究科、2.新潟大学理学部地質科学科、3.海洋研究開発機構海洋掘削科学研究開発センター)

[SCG63-P12] Arc magma-induced mantle refertalization: a case study of plagioclase peridotite in the Mineoka-Setogawa Belt, central Japan

*市山祐司¹ (1.千葉大学)

[SCG63-P13] Role of plutonics in the generation of felsic magmas at ocean island volcanoes — Oki Dozen and Ascension Island

*Katy Jane Chamberlain¹、Jane H Scarrow^2,3、Yoshihiko Tamura¹ (1.Japan Agency for Marine-Earth Science and Technology、2.School of Environmental Sciences, University of East Anglia, UK、3.University of Granada, Spain)

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