An exploitation of new obsidian hydration dating toward the establishment of reliable chronology in prehistoric sites and the estimation of paleoclimatic conditions

• Project/Area Number: 24800002
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Cultural property science
• Research Institution: Hokkaido University
• Principal Investigator: NAKAZAWA Yuichi 北海道大学, 医学(系)研究科(研究院), 研究員 (70637420)
• Project Period (FY): 2012-08-31 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 黒曜石 / 水和層 / 計測 / 年代測定 / 効果温度 / 先史遺跡 / 完新世 / 北海道

Research Abstract

The goal of present research is to explore the new research direction of obsidian hydration dating (OHD). Toward the establishment of reliable chronology of prehistoric sites and estimation of paleoclimatic conditions, I examined as to whether and to what extent OHD works. A procedure to choose reliable measurement was proposed through a systematic comparison of variation in rim thicknesses within and between the specimens. Site dates were estimated by using the mean rim thickness that was systematically chosen from the samples. The mathematical formula to estimate the effective hydration temperature (EHT) proposed by Rogers (2007) was employed. The difference between EHT for studied early Holocene site and mean temperature based on the local meteorological data indicated that both Holocene climatic maximum and changes in depths of samples in response to the accumulation of sediments had effects on EHT.

Research Products

• [Journal Article] Investigating the Eolian Context of the Last Glacial Maximum Occupation at Kawanishi-C, Hokkaido, Japan. (2014)
  • Author(s): Izuho, M., Hayashi, K., Nakazawa, Y., Soda, T., Oda, N., Yamahara, T., Kitazawa, M., and Buvit, I.
  • Journal Title: Geoarchaeology Volume: 29 Issue: 3 Pages: 202-220
  • DOI: 10.1002/gea.21477
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 炉跡周辺の廃棄行動 (2014)
  • Author(s): 中沢祐一
  • Journal Title: 石器文化研究 Volume: 19号 Pages: 102-110
• [Journal Article] 廃棄物形成からみた居住活動の組織化 : 北海道川西C遺跡En-a降下軽石層下位の居住面について (2013)
  • Author(s): 中沢祐一
  • Journal Title: 旧石器研究 Volume: 9号 Pages: 61-74
  • NAID: 40020581278
  • Peer Reviewed
• [Journal Article] 廃棄物形成からみた居住活動の組織化：北海道川西C遺跡En-a降下軽石層下位の居住面について (2013)
  • Author(s): 中沢祐一
  • Journal Title: 旧石器研究 Volume: 9 Pages: 61-74
  • NAID: 40020581278
  • Peer Reviewed
• [Presentation] 炉跡周辺の廃棄行動 (2014)
  • Author(s): 中沢祐一
  • Organizer: 第17回石器文化研究交流会
  • Place of Presentation: 神奈川県立歴史博物館
  • Year and Date: 2014-01-26
• [Presentation] 炉跡周辺の廃棄行動 (2014)
  • Author(s): 中沢祐一
  • Organizer: 第17回石器文化研究交流会
  • Place of Presentation: 神奈川県立歴史博物館（横浜市）
  • Invited
• [Presentation] A functional analysis of chipped stone tools from the LGM microblade assemblages in Hokkaido, northern Japan (2013)
  • Author(s): Iwase A, and Y Nakazawa
  • Organizer: Paper presented at the International Workshop of "Changes in Behavioral and Technological Adaptation around the LGM in Eurasia"
  • Place of Presentation: Tokyo Metropolitan University
  • Year and Date: 2013-09-29
• [Presentation] Production of the LGM microblades : an examination of the refitted microblade/blade cores from the Kashiwadai 1, Hokkaido (2013)
  • Author(s): Akai F, and Y Nakazawa
  • Organizer: Paper presented at the International Workshop of "Changes in Behavioral and Technological Adaptation around the LGM in Eurasia"
  • Place of Presentation: Tokyo Metropolitan University
  • Year and Date: 2013-09-29
• [Presentation] On the spatial patterns of artifact scatters at the LGM site of Kashiwadai 1, Hokkaido (2013)
  • Author(s): Hayashi K, Nakazawa Y, and M Izuho
  • Organizer: Paper presented at the International Workshop of "Changes in Behavioral and Technological Adaptation around the LGM in Eurasia"
  • Place of Presentation: Tokyo Metropolitan University
  • Year and Date: 2013-09-29
• [Presentation] 黒曜石水和層法の新しい方向 (2013)
  • Author(s): 中沢祐一
  • Organizer: 北海道旧石器文化研究会
  • Place of Presentation: 北海道大学
  • Year and Date: 2013-05-18
• [Presentation] Use-wear analysis of the portable blade tools : organization of technology among the Upper Paleolithic foragers in Hokkaido (2013)
  • Author(s): Iwase A, and Y Nakazawa
  • Organizer: Poster presented at the 78^<th> Annual Meeting of the Society for American Archaeology
  • Place of Presentation: Hawaii Convention Center
  • Year and Date: 2013-04-05
• [Presentation] An evaluation of site occupation intensity : hearth-centered spatial organization at the Upper Paleolithic open-air site of Kawanishi C, Hokkaido, Japan (2013)
  • Author(s): Nakazawa Y, Iwase A, Izuho M, Yamahara T, and M Kitazawa
  • Organizer: Poster presented at the 78 th Annual Meeting of the Society for American Archaeology
  • Place of Presentation: Hawaii Convention Center
  • Year and Date: 2013-04-05
• [Presentation] 黒曜石水和層法における計測値の評価 (2013)
  • Author(s): 中沢祐一
  • Organizer: 日本第四学会2013年大会
  • Place of Presentation: 弘前大学
• [Presentation] 二次加工部の形態変異について : 北海道LGM石器群の分析から (2013)
  • Author(s): 中沢祐一, 岩瀬彬, 出穂雅実
  • Organizer: 日本旧石器学会第11回大会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] 黒曜石水和層法における計測値の評価 (2013)
  • Author(s): 中沢祐一
  • Organizer: 日本第四紀学会
  • Place of Presentation: 弘前大学（弘前市）
• [Presentation] 黒曜石水和層法の新しい方向 (2013)
  • Author(s): 中沢祐一
  • Organizer: 北海道旧石器文化研究会
  • Place of Presentation: 北海道大学（札幌市）
• [Presentation] An evaluation of site occupation intensity: hearth-centered spatial organization at the Upper Paleolithic open-air site of Kawanishi C, Hokkaido, Japan. (2013)
  • Author(s): Nakazawa, Y., Iwase, A., Izuho, M., Yamahara, T., and M. Kitazawa
  • Organizer: 78th Annual Meeting of the Society for American Archaeology
  • Place of Presentation: Hawaii Convention Center(USA)
• [Presentation] Use-wear analysis of the portable blade tools: organization of technology among the Upper Paleolithic foragers in Hokkaido. (2013)
  • Author(s): Iwase, A. and Y. Nakazawa
  • Organizer: 78th Annual Meeting of the Society for American Archaeology
  • Place of Presentation: Hawaii Convention Center(USA)
• [Presentation] 二次加工部の形態変異について：北海道LGM石器群の分析から (2013)
  • Author(s): 中沢祐一・岩瀬 彬・出穂雅実
  • Organizer: 日本旧石器学会第11回大会
  • Place of Presentation: 東海大学湘南キャンパス（神奈川県）
• [Presentation] On the spatial patterns of artifact scatters at the LGM site of Kashiwadai 1, Hokkaido. (2013)
  • Author(s): Hayashi, K., Nakazawa, Y., and M. Izuho
  • Organizer: International Workshop of “Changes in Behavioral and Technological Adaptation around the LGM in Eurasia”
  • Place of Presentation: 首都大学東京（東京都）
  • Invited
• [Presentation] Production of the LGM microblades: an examination of the refitted microblade/blade cores from the Kashiwadai 1, Hokkaido. (2013)
  • Author(s): Akai, F., and Y. Nakazawa
  • Organizer: International Workshop of “Changes in Behavioral and Technological Adaptation around the LGM in Eurasia”
  • Place of Presentation: 首都大学東京（東京都）
  • Invited
• [Presentation] A functional analysis of chipped stone tools from the LGM microblade assemblages in Hokkaido, northern Japan (2013)
  • Author(s): Iwase, A., and Y. Nakazawa
  • Organizer: International Workshop of “Changes in Behavioral and Technological Adaptation around the LGM in Eurasia”
  • Place of Presentation: 首都大学東京（東京都）
  • Invited
• [Presentation] Toward a reexamination of the Last Glacial Maximum occupation of Kashiwadai 1 (2012)
  • Author(s): Nakazawa Y
  • Organizer: Paper presented at the International Workshop of "Upper Paleolithic Geochronology around the LGM in Northeast Asia"
  • Place of Presentation: Tokyo Metropolitan University
  • Year and Date: 2012-12-03
• [Presentation] アメリカ合衆国における文化資源管理―南西部ニューメキシコ州の例― (2012)
  • Author(s): 中沢祐一
  • Organizer: 第66回日本人類学会大会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2012-11-02
• [Presentation] アメリカ合衆国における文化資源管理;南西部ニューメキシコ州の例― (2012)
  • Author(s): 中沢祐一
  • Organizer: 第66回日本人類学会大会
  • Place of Presentation: 慶応大学日吉キャンパス(東京都）
• [Presentation] Toward a reexamination of the Last Glacial Maximum occupation of Kashiwadai 1. (2012)
  • Author(s): Nakazawa, Y.
  • Organizer: International Workshop of “Upper Paleolithic Geochronology around the LGM in Northeast Asia”
  • Place of Presentation: 首都大学東京(東京都）
  • Invited