Mikuni, K., N. Hirano, N. Akizawa, S. Machida, A. Tamura, T. Morishita (2021) Geochemical structure of the oldest Pacific lithosphere. Goldschmidt 2021, doi: 10.7185/gold2021.4595. (July 5, 2021) online

 

Nakao, K., N. Hirano, H. Sumino (2021) Noble gas isotopic composition of directly ascending petit-spot from the northwest Pacific Ocean. JpGU 2021. (June 5, 2021) online

 

Hirano, N., Y. Katsuragi, T. Ushikubo & K. Shimizu (2020) Extremely High Volatiles of Petit-Spot. Goldschmidt Abstracts 2020, 1029. (June 26, 2020) online

 

Liu, J., N. Hirano, S. Machida, Q. Xia & C. Tao (2020) Melting of Reycled Crust Responsible for the Gutenberg Discontiuity. Goldschmidt Abstracts 2020, 1592. (June 26, 2020) online

 

Sakai Shunta, Hirano Naoto, Machida Shiki (2019) Geochemical and geological implications of in-situ basalts and petit-spot basalts since Late Cretaceous accretionary complexes in Japan. AGU Fall Meeting 2019, T54B-05. (December 13, 2019, Moscone Center, San Francisco, California, USA) Oral

 

Hirano Naoto, Sumino Hirochika (2019) Petit-spot and seamount rejuvenation overprinting western Pacific plate. AGU Fall Meeting 2019, V11E-0142. (December 9, 2019, Moscone Center, San Francisco, California, USA) Poster

 

Yutani Taku, Hirano Naoto (2019) Petrotectonics of adakites: implications for tectonic reconstruction of the eastern Hokkaido, Japan. 2019 GSA Annual Meeting, 274-10. (September 25, 2019,  Phoenix Convention Center, Poenix, Arizoa, USA) Poster

 

Hirano Naoto, Yutani Taku, Sakai Shunta (2019) Petit-spot submarine volcanoes as a geological perturbation of subducting plate. 2019 GSA Annual Meeting, 214-13. (September 24, 2019,  Phoenix Convention Center, Poenix, Arizona, USA) Oral

 

Sebastien Pilet, Naoto Hirano (2019) Is mantle upwelling required to produce intraplate magma ? – The counter example of petit-spot volcanoes. EGU General Assembly 2019, Geophysical Research Abstracts 21, EGU2019-9408. (April 12, 2019,  Austria Center Vienna, Vienna, Austria) Poster

 

Shunta Sakai, Naoto Hirano, Yildirim Dilek, Shiki Machida, Kazutaka Yasukawa, Yasuhiro Kato (2018) A broad distribution of accreted intraplate volcanic edifice in the Late Cretaceous Tokoro greenstone belt, NE-most of Japan. AGU Fall Meeting 2018, T31D-1883. (December 12, 2018, Washington Convention Center, Washington D.C., USA) Poster

 

Naoto Hirano, Shiki Machida, Shipboard Scientific Party KS-18-9 (2018) Directly ascending asthenospheric melt erupted atop outer rise: the preliminary report of cruise KS-18-09, R/V Shinsei. AGU Fall Meeting 2018, V23L-3518. (December 11, 2018, Washington Convention Center, Washington D.C., USA) Poster

 

Yuki Katsuragi, Naoto Hirano, Yuki Sato, Kenji Shimizu (2018) Volatile composition of asthenosphere below NW Pacific lithosphere revealed by petit-spot basalt. AGU Fall Meeting 2018, V14A-03. (December 10, 2018, Washington Convention Center, Washington D.C., USA) Oral

 

Naoto Hirano, Fidel Costa Rodriguez, Yuki Katsuragi, Jeffrey Anthony Oalmann (2018) Exploring asthenosphere: Geochemistry of submarine petit-spot volcanoes. Seminar on Earth Observatory of Singapore, Nanyang Technological University. (December 4, 2018, Nanyang Technological University, Singapore) Semi.

 

Naoto Hirano (2018) Submarine Petit-Spot Volcanoes Induced by the Plate Flexure Prior to Subduction. Submarine Volcanoes: Windows into Earth's Dynamic Interior, International Symposium at National Museum of Nature and Science. (November 3, 2018, National Museum of Nature and Science, Tokyo, Japan) *Invited

 

Yuki Katsuragi, Naoto Hirano, Yuki Sato, Kenji Shimizu (2018) H2O/F ratios in asthenosphere inferred from volatile compositions of petit-spot lavas. JpGU 2018, SGC45-06. (May 21, 2018, Makuhari Messe, Chiba, Japan) Oral

 

Shunta Sakai, Naoto Hirano, Shiki Machida (2018) Tectonic reconstructions and origin of Cretaceous greenstones, Tokoro Belt, NE-most of Japan. JpGU 2018, SMP34-P11. (May 20, 2018, Makuhari Messe, Chiba, Japan) Poster

 

Naoto Hirano (2017) Mantle compositions below petit-spot volcanoes of the NW Pacific Plate. AGU Fall Meeting, V51D-0375. (December 15 2017, New Orleans Ernest N. Morial Convention Center, New Orleans, USA) Poster

 

Naoto Hirano (2017) Accretionary records on Japanese archipelago, NW Pacific rim. GSA Annual Meeting, 115-6. (October 23, 2017, Washington State Convention Center, Seattle, Washington, USA) Oral

 

Yuki Sato, Naoto Hirano (2017) Structure of asthenosphere interpreted by submarine petit-spot volcanoes. AOGS 14th Annual Meeting, SE27-A002. (August 7, 2017, Convention Centre - SUNTEC Singapore, Singapore) Oral

 

Keishiro Azami, Naoto Hirano, Takahashi, Watanabe (2017) Origin of diagenetic signal in hydrogenetic ferromanganese crusts from petit-spot volcanoes. AOGS 14th Annual Meeting, SE13-A011. (August 8, 2017, Convention Centre - SUNTEC Singapore, Singapore) Oral

 

Taku Yutani, Naoto Hirano (2017) Igneous activities of the Paleo-Kuril forearc induced by Izanagi-Pacific ridge. JpGU-AGU Joint Meeting, MIS08-04. (10:45, May 25, 2017, 105 Makuhari Messe, Chiba, Japan) *Invited

 

Naoto Hirano, Yuki Sato, Arashi Taki (2017) Metasomatic records of lithosphere prior to subduction inferred from petit-spot. JpGU-AGU Joint Meeting, S-CG67. (May 23, 2017, A05 Makuhari Messe, Chiba, Japan) *Invited

 

Naoto Hirano (2016) Petit-spot as a geochemical/petrological window into subducting lithosphere and asthenosphere. New Challenges in Volatile Cycling in the Deep Earth, Tohoku Forum for Creativity. (July 5, 2016, The School of Engineering Center Hall, Tohoku Univ., Sendai) *Invited

 

Keishiro Azami, Naoto Hirano, Shiki Machida, Kazutaka Yasukawa, Yasuhiro Kato (2016) REE and Y distribution in deep submarine ferromanganese crusts. Goldschmidt 2016, 09c-154. (June 27, 2016, Pacifico Yokohama, Yokohama, Japan) Poster

 

Naoto Hirano (2016) Structure of suboceanic mantle below petit-spot volcanoes. Japan Geoscience Uninon Meeting 2016, SIT08-07. (May 24, 2016, Makuhari Messe, Chiba) *Invited

 

Taku Yutani & Naoto Hirano (2015) Alkaline volcanisms in the Proto-Kuril forearc. AGU 2015 Fall Meeting Fall Meeting 2015, abstract #V51G-3111. (December 18, Moscone Center, San Francisco, California) Poster

 

Naoto Hirano, Yildrim Dilek (2015) Flexural bending-induced plumelets and their seamounts in accretionary (Japanese-style) and collisional (Tethyan-style) orogenic belts. AGU Fall Meeting 2015, abstract #T41E-2955. (December 17, Moscone Center, San Francisco, California) Poster

 

Naoto Hirano (2015) Petit-spot lavas as a window into the geochemistry of the asthenosphere. Goldschmidt Abstracts 2015, 1273-1273. (August 18, 2015, Congress Center, Prague, Czech Republic) *Invited

 

N. Hirano, M. Nakanishi, S. Machida, J. Yamamoto, T. Ishii (2014) Petit-spot and geology in NW Pacific. Geological Society of America Abstracts with Programs 46 (6) 657-657. (October 22, 2014, Convention Center, Vancouver, Canada) Oral

 

N. Hirano, J. Yamamoto, S. Okumura (2013) Mantle structure below the petit-spot. 2013 Goldschmidt, Mineralogical Magazine 77 (5) 1302-1302. (August, 2013, Florence, Italy) Oral

 

N. Hirano (2012) Carbon dioxide of petit-spot submarine volcanoes off Japan and Chile trenches.Geological Society of America Abstracts with Programs 44 (7), 507-507. (November 7, 2012, Convention Center, Charlotte, North Carolina) Oral

 

N. Hirano & S. Okumura (2012) Role of volatiles on petit-spot volcanoes. Japan Geoscience Uninon Meeting 2012, MIS04-04. (May 20, 2012, Makuhari Messe, Chiba) *Invited

 

Y. Ogawa, N. Hirano, R. Mori, T. Tsunogae (2011) History and records from Mineoka ophiolitic mélange belt for the idea of initiation and development of Izu-Bonin arc in Western Pacific. EGU General Assembly 2011, TS6.3. (April 3-8, 2011, Wien) Poster

 

N. Hirano (2011) MOR to ARC evolution and petit-spot volcanoes of the Mineoka ophiolite as revealed by new geochemical and age constraints. Japanese-Russian workshop symposium, Northern Pacific-Rim Ophiolites and their Ocean-Floor Analogues (7-8 February 2011, Center for Northeast Asian Studies, Tohoku Univ.) Oral

 

N. Hirano, S. Machida, N. Abe (2010) The alkaline magma squeezed upward by the plate flexure prior to subduction off the Chile and Japan Trenches. Eos Transactions AGU 91 (52), Fall Meeting Supplement, Abstract V13F-07. (December 13, 2010, Moscow Center, San Francisco, California) *ORAL

 

N. Hirano (2009) The 4th volcanic zone, petit-spot, in response to plate flexure. Eos Transactions AGU 90 (52), Fall Meeting Supplement, Abstract V54A-07. (18 December 2009, Moscow Center, San Francisco, California) *Invited

 

S. Machida, N. Hirano, Y. Kato, N. Abe (2009) Geochemical variation of alkaline basalts from petit-spot volcanoes in the Northwestern Pacific. Eos Transactions AGU 90 (52), Fall Meeting Supplement, Abstract V33C-2058. *POSTER

 

G. Valentine & N. Hirano (2009) Mechanisms of low-flux intraplate volcanic fields – Basin and Range and Northwest Pacific Ocean. Eos Trans. AGU 90 (22), Joint Assembly Supplement, Abstract V23B-03. (24–27 May 2009, Toronto, Ontario, Canada) *Invited

 

Machida, Hirano, Kimura (2008) Petit-spot, A Unique Window for Viewing Earth Recycling. Eos Transactions AGU 89 (52), Fall Meeting Supplement, Abstract V43F-2202. *POSTER

 

Hirano (2008) New type of volcano, petit-spot, in response to the plate flexure. 2008 IAVCEI General Assembly, Abstracts 62-62. (19 August 2008, University of Iceland, Reykjavík)" *ORAL

 

Hirano, Nakanishi, Koppers (2007) Seamounts, knolls and petit spots on the NW Pacific Plate represent intra-plate volcanism from the Cretaceous to present. Eos Transactions AGU 88 (52), Fall Meeting Supplement, Abstract T13A-1128. (10-14 December 2007, Moscow Center, San Francisco, California) *POSTER

 

Machida, Hirano, Kimura (2007) Small-scale Heterogeneity in Pacific Upper Mantle Unrelated to Plumes Evidenced by Sr-Nd-Pb Isotopic Composition of Basalt from Petit-spot Volcanoes. Eos Transactions AGU, 88 (52), Fall Meeting Supplement, Abstract V13-7074. *POSTER

 

Fujiwara, Hirano, Abe, Takizawa (2007) Subsurface Structure of the "petit-spot" Volcanoes on the Northwestern Pacific Plate. Eos Transactions AGU 88 (52), Fall Meeting Supplement, Abstract T13A-1126. *POSTER

 

Hirano, Takahashi, Koppers, Kagi, Abe (2007) A new kind of volcano, petit spot, to understand oceanic lithosphere. International Symposium 2007, Innovative Science, Kanazawa University Frontier Science Organization.

(7 August 2007, Kakuma Campus, Kanazawa Univ., Kanazawa) *ORAL

 

Hirano, Takahashi, Abe, Koppers (2006) Volcanism in response to plate flexure: Evidence for partial melt in asthenosphere. Eos Transactions AGU 87 (52), Fall Meeting Supplement, Abstract V13A-0639. (11 December 2006, Moscow Center, San Francisco, California) *POSTER

 

Ishii, Hirano, Ohara, Bloomer (2006) Petrological studies on the mantle peridotites recovered from the ocean floor in the western Pacific. Eos Transactions AGU 87 (52), Fall Meeting Supplement, Abstract V41B-1735. *POSTER

 

Hirano, Abe, Fujiwara, Baba, Yamamoto, Goto, Machida, Takahashi (2006) Petit spot volcanoes on the NE Pacific plate. Mission Moho Workshop -Understanding the Formation and Evolution of the Oceanic Lithosphere-.

(8 September 2006, 5th Avenue Suites Hotel, Portland, Oregon) *POSTER

 

Ishii, Hirano, Ohara, Arima (2006) Mantle peridotites of the sea floor in the Western Pacific. Mission Moho Workshop -Understanding the Formation and Evolution of the Oceanic Lithosphere-. (7-9 September 2006, 5th Avenue Suites Hotel, Portland, Oregon)

 

Ishii, Hirano, Ohara, Arima (2006) Mantle peridotites recovered from serpentine seamounts, breccia pipe (diatreme), megamullions and tectonic outcrops of the sea floor in the Western Pacific. Japanese-Russian Ophiolite Symposium. (4 March 2006, Ocean Research Institute, Univ. Tokyo, Nakano, Tokyo).

 

Naoto HIRANO, Eiichi TAKAHASHI, Takafumi HIRATA, Junji YAMAMOTO, Shiki MACHIDA, Teruaki ISHII & Natsue ABE (2005) New type volcanism along fractures on the flexural Cretaceous Pacific Plate. 2005 Fall Meeting, American Geophsical Union. (9 December, 2005, Moscow Center, San Francisco) *POSTER

 

Eiichi TAKAHASHI & Naoto HIRANO (2005) Evidence for partial melting in the Earth's asthenosphere. 2005 Fall Meeting, American Geophsical Union

(4-9 December, 2005, Moscow Center, San Francisco) *ORAL

 

Naoto HIRANO, Satoru HARAGUCHI, Junji YAMAMOTO, Eiichi TAKAHASHI, Takafumi HIRATA, Ayu TAKAHASHI & Yujiro OGAWA (2004) Young lava fields on the Cretaceous Pacific Plate in the Japan Trench: Non-hotspot volcanism? 2004 Fall Meeting, American Geophsical Union. (13-18 December, 2004, Moscow Center, San Francisco) *POSTER

 

Naoto HIRANO, Kiichiro KAWAMURA, Satoru HARAGUCHI, Susumu UMINO & Yujiro OGAWA (2004) New discovery of a young lava field at a trench-outer rise system: eruption on the flexural part of old oceanic lithosphere. Western Pacific Geophysical Meeting, American Geophsical Union. (16 August, 2004, Convention Center, Honolulu) *ORAL

 

Naoto HIRANO, David A. CLAGUE, Eiichi TAKAHASHI, Takafumi HIRATA, Michelle COOMBS & Barry EAKINS (2003) Eruptive style and geochemistry of North Arch lavas. 2002 Fall Meeting, American Geophysical Union (December 8, 2003, Moscow Center, San Francisco) *POSTER

 

Yujiro OGAWA, Naoto HIRANO, Shipboard Scientific Party KR03-07 (2003) En echelon knolls in the Nosappu Fracture Zone, NW Pacific: A possible leaky transform fault zone. 2003 Fall Meeting, American Geophysical Union (December, 2003, Moscow Center, San Francisco) *POSTER

 

Naoto HIRANO, David A. CLAGUE, Takafumi HIRATA, Michelle COOMBS & Eiichi TAKAHASHI (2003) Controls on eruptive style for North Arch lavas. 13th Annual V. M. Goldschmidt Conference (September, 2003, Kurashiki-Sakuyo University, Kurashiki) *POSTER

 

Naoto HIRANO (2002) Long-lived seamount volcanism in the western Pacific, and Early Cretaceous motion of the Pacific Plate. 2002 Fall Meeting, American Geophysical Union (December 9, 2002, Moscow Center, San Francisco) *POSTER

 

Naoto HIRANO, Yujiro OGAWA, Kazuo SAITO, Hidetsugu TANIGUCHI & Hiroshi SATO (2001) Multi-stage evolution of the Tertiary Mineoka ophiolite (Boso Peninsula, Japan) at a TTT triple junction in the NW Pacific as revealed by new geochemical and age constraints. 2001 Fall Meeting, American Geophysical Union (December 14, 2001, Moscow Center, San Francisco) *ORAL

 

Naoto HIRANO (2000) Discovery of 6-8 Ma alkaline basalt from the oceanward slope toe of the Japan Trench. Eos Transactions American Geophsical Union, 81(22), p.WP254. (May, 2000, Yoyogi, Tokyo) *POSTER