An integrated study of Paleoproterozoic high-pressure intermediate-type metamorphic belt: Implication for the operation of modern-style subduction processes

• Project/Area Number: 15H05212
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Geology
• Research Institution: Tohoku University
• Principal Investigator: Tsujimori Tatsuki 東北大学, 東北アジア研究センター, 教授 (00436833)
• Co-Investigator(Kenkyū-buntansha): 平野 直人 東北大学, 東北アジア研究センター, 准教授 (00451831) ; 太田 努 岡山大学, 地球物質科学研究センター, 助手 (80379817)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000); Fiscal Year 2017: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2015: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
• Keywords: 現行型沈み込み帯 / 高圧中間群変成帯 / 古原生代 / 高圧変成岩 / 変成岩岩石学 / 野外地質学 / タンザニア / 東アフリカ / 現行沈み込み帯 / 造山帯

Outline of Final Research Achievements

High-pressure intermediate-type metamorphic belt surrounding the late Archean Tanzania Craton experienced Pacific-type subduction zone metamorphism in Orosirian Period at ca. 2 Ga. Epidote-amphibolite-facies meta-pillow basalts of the belt had a mid-ocean ridge basalt-like affinity. Details of eclogite- and high-pressure granulite-facies metamorphism has also brought new insight into Paleoproterozoic Pacific-type subduction processes.

Research Products

• [Int'l Joint Research] University of Dar es Salaam(Tanzania)
• [Int'l Joint Research] Universidad de Salamanca(Spain)
• [Int'l Joint Research] Stanford University/American Museum of Natural History(米国)
• [Int'l Joint Research] ダルエスサラーム大学(タンザニア)
• [Int'l Joint Research] スタンフォード大学(米国)
• [Int'l Joint Research] スタンフォード大学(米国)
• [Int'l Joint Research] ダルエスサラーム大学(タンザニア)
• [Journal Article] Early Paleozoic jadeitites in Japan: An overview (2017)
  • Author(s): Tsujimori T.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 5 Pages: 217-226
  • DOI: 10.2465/jmps.170406a
  • NAID: 130006201312
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed
• [Journal Article] Jadeitite (jadeite jade) from Japan: History, characteristics, and perspectives (2017)
  • Author(s): Tsujimori T., Harlow G.E.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 5 Pages: 184-196
  • DOI: 10.2465/jmps.170804
  • NAID: 130006201333
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Gem sparkles deep: Preface of the special issue on ‘Jadeite and jadeitite’ (2017)
  • Author(s): Tsujimori T., Miyajima H., Miyawaki R.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 5 Pages: 181-183
  • DOI: 10.2465/jmps.171006
  • NAID: 130006201484
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed
• [Journal Article] Cathodoluminescence petrography of P–type jadeitites from the New Idria serpentinite body, California (2017)
  • Author(s): Takahashi N., Tsujimori T., Kayama M., Nishido H.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 5 Pages: 291-299
  • DOI: 10.2465/jmps.170403
  • NAID: 130006201313
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed
• [Journal Article] Relict chromian spinels in Tulu Dimtu serpentinites and listvenite, Western Ethiopia: Implications for the timing of listvenite formation (2017)
  • Author(s): Sofiya A., Ishiwatari A., Hirano N., Tsujimori T.
  • Journal Title: International Geology Review Volume: 59 Issue: 13 Pages: 1621-1631
  • DOI: 10.1080/00206814.2016.1213142
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Eclogite varieties and petrotectonic evolution of the northern Guatemala Suture Complex (2017)
  • Author(s): Martens U.C., Tsujimori T., Liou J.G.
  • Journal Title: International Geology Review Volume: 59 Issue: 5-6 Pages: 721-740
  • DOI: 10.1080/00206814.2016.1245592
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Kimberlites and the start of plate tectonics: REPLY (2017)
  • Author(s): Stern, R.J., Leybourne, M.I., Tsujimori, T.
  • Journal Title: Geology Volume: 45 Issue: 1 Pages: e406-e406
  • DOI: 10.1130/g38725y.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Petrology and geochemistry of an upper crustal pluton: A view into crustal-scale magmatism during arc to retro-arc transition (2016)
  • Author(s): Barnes, C.G., Ernst, W.G., Berry, R., Tsujimori, T.
  • Journal Title: Journal of Petrology Volume: 57 Issue: 7 Pages: 1361-1388
  • DOI: 10.1093/petrology/egw043
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Influence of laser parameters on isotope fractionation and optimisation of lithium and boron isotope ratio measurements using laser ablation-multiple Faraday collector-inductively coupled plasma mass spectrometry (2016)
  • Author(s): Kimura J.-I., Chang Q., Ishikawa T., and Tsujimori T.
  • Journal Title: Journal of Analytical Atomic Spectrometry Volume: 31 Issue: 11 Pages: 2305-2320
  • DOI: 10.1039/c6ja00283h
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Kimberlites and the start of plate tectonics (2016)
  • Author(s): Stern, R.J., Leybourne, M.I., Tsujimori, T.
  • Journal Title: Geology Volume: 44 Issue: 10 Pages: 799-802
  • DOI: 10.1130/g38024.1
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] White mica K-Ar geochronology of Sanbagawa eclogites from SW Japan: Implications for deformation-controlled K-Ar closure temperature (2015)
  • Author(s): Itaya T., Tsujimori T.
  • Journal Title: International Geology Review Volume: 57 Issue: 5-8 Pages: 1014-1022
  • DOI: 10.1080/00206814.2014.973915
  • Peer Reviewed
• [Presentation] Early Paleozoic jadeitites in Japan (2017)
  • Author(s): Tsujimori, T.
  • Organizer: Korean Geological Society 2017 Fall Joint Geology Meeting
  • Invited
• [Presentation] Cathodoluminescence petrography of P-type jadeitites from the New Idria serpentinite body, California (2017)
  • Author(s): Takahashi N., Tsujimori T., Kayama M., Nishido H.
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] Geochemical study of P-type jadeitites (jadeite precipitates) from the New Idria serpentinite body, California (2017)
  • Author(s): Takahashi N., Tsujimori T., Chang Q., Kimura J.I.
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] Petrological comparison between Siberian and NW Pacific lithospheric mantle: A preliminary evaluation of the lithosphere stacking model (2017)
  • Author(s): Shimbori N., Tsujimori T., Hirano N., Kimura J.I.
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] Lithium and boron isotopic ratio analyses using laser ablation-multiple Faraday collector-ICPMS (2017)
  • Author(s): Chang Q., Kimura J.I., Ishikawa T., Tsujimori T.
  • Organizer: JpGU-AGU Joint Meeting 2017
• [Presentation] P-type jadeitite (veined jadeitite) and jadeite-bearing retrograded eclogite from California: Implications for subduction-zone fluid integration (2017)
  • Author(s): Tsujimori T., Takahashi N., J.I. Kimura
  • Organizer: 12th International Eclogite Conference
  • Int'l Joint Research
• [Presentation] Recycling of crustal materials through study of ultrahigh-pressure minerals in collisional orogens, ophiolites, and xenoliths (2016)
  • Author(s): Tsujimori T.
  • Organizer: International Symposium "Advances in High-pressure Research III: Towards Geodynamic Implications
  • Place of Presentation: Novosibilsk, Russia
  • Year and Date: 2016-08-29
  • Int'l Joint Research
• [Presentation] Petrotectonic indicators for distinctive modern-style subduction zone (2016)
  • Author(s): Tsujimori T., Stern R.J.
  • Organizer: International Workshop on the Origin and Evolution of Plate Tectonics
  • Place of Presentation: Monte Verita;, Switzerland
  • Year and Date: 2016-07-17
  • Int'l Joint Research
• [Presentation] 1.96 Ga Ky bearing eclogites with 605 Ma granulite-facies overgrowth in the Paleoproterozoic Ubendian Belt, Tanzania (2016)
  • Author(s): Boniface N., Tsujimori T.
  • Organizer: Goldschimidt Conference
  • Place of Presentation: Yokohama
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Precambrian plate-tectonic evolution: Bottom-up and top-down mantle circulation (2015)
  • Author(s): Ernst W.G., Sleep N.H., Tsujimori T.
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: Baltimore, USA
  • Year and Date: 2015-11-01
  • Int'l Joint Research
• [Presentation] Deep upper mantle recycling of crustal materials: Evidence from UHP minerals in collisional orogens, ophiolites, and xenoliths (2015)
  • Author(s): Liou J.G., Tsujimori T., Yang J.S., Zhang R.Y., Ernst W.G.
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: Baltimore, USA
  • Year and Date: 2015-11-01
  • Int'l Joint Research
• [Presentation] Multi-stage evolution of the late Jurassic English Peak pluton, Klamath Mountains, CA (2015)
  • Author(s): Barnes C.G., Ernst W.G., Tsujimori T.
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: Baltimore, USA
  • Year and Date: 2015-11-01
• [Presentation] Petrological records of Paleoproterozoic and Neoproterozoic subduction-zone metamorphism in Tanzania (2015)
  • Author(s): Boniface N., Tsujimori T.
  • Organizer: Goldschmidt Conference
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-08-16
  • Int'l Joint Research