長崎県大村湾南岸,伊木力遺跡周辺の沖積層と海面変化
Bibliographic Information
- Other Title
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- ナガサキケン オオムラワン ナンガン イキリキ イセキ シュウヘン ノ チュウ
- Holocene marine sediments and sea-level change at the Ikiriki archeological site, southern coast of Oomura Bay, Nagasaki, Japan
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Abstract
Core boring was performed near the Ikirike early-Jyomon-period site on a small coastal plain facing a closed inner bay, Oomura Bay. The core is 4.73m long, and composed of Holocene marine sandy-to-silty sediments with molluscan and diatom fossil assemblages, which indicate the sediments were formed beneath shallow sea like an inner bay. The 14C dating determines the age, 7620±145yr. B. P., from the peaty silt at the base, -5.9 m.a.s.l., in the core. The diatom flora for this part consists of brackish-water species such as Navicula yarrensis. The altitude of the dated silty sediment shows the earliest sea-level which the Holocene transgression reached in the boring site. According to previous reports, the sea-level is -6m in ca. 7,600 yr. B. P., -1m in ca. 5,900y. B. P., and -0.5 to-0.2m in ca. 5,500 to 5,300 y. B. P. at the Ikiriki site.
長崎大学教育学部自然科学研究報告. vol.53, p.27-40; 1995
Journal
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- Science bulletin of the Faculty of Education, Nagasaki University
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Science bulletin of the Faculty of Education, Nagasaki University 53 27-40, 1995-05-31
長崎大学教育学部
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Details 詳細情報について
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- CRID
- 1050005822298488448
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- NII Article ID
- 110000293956
- 10003858472
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- NII Book ID
- AN00178280
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- ISSN
- 0386443X
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- HANDLE
- 10069/32176
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- NDL BIB ID
- 3610488
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- Text Lang
- ja
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- Article Type
- departmental bulletin paper
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- Data Source
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- IRDB
- NDL
- CiNii Articles