| Project/Area Number |
20403015
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Yokohama National University |
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Principal Investigator |
MAJIMA Ryuichi 横浜国立大学, 環境情報研究院, 教授 (30202310)
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|---|
| Co-Investigator(Kenkyū-buntansha) |
OKADA Makoto 茨城大学, 理学部, 准教授 (12101401)
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| Co-Investigator(Renkei-kenkyūsha) |
KASE Tomoki 国立科学博物館, 地学研究部, 研究主幹 (20124183)
KAWAGATA Shungo 横浜国立大学, 教育人間科学部, 准教授 (90244219)
WADA Hideki 静岡大学, 理学部, 教授 (20126791)
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| Project Period (FY) |
2008 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2011: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | 化学合成群集 / 新生代 / フィリピン・レイデ島 / メタン湧水 / シロウリガイ類 / 化学合成化石群集 / フィリピン / レイテ島 / 更新世 / ツキガイ類 / 地すべり堆積物 / メタン / スランプ / 気候変動 / 鮮新世 / 自生炭酸塩 / Burabud凝灰岩層 |
|---|
| Research Abstract |
We observed the fossilized chemosynthetic assemblages found along the coastal area of northwestern Leyte, Philippines where Pliocene to Pleistocene marine sediments are exposed. This is the first discovery of fossil cold-seep assemblages in Southeast Asia. The assemblages show considerable variations in their modes of fossil occurrence in association with 13C-depleted authigenic carbonates indicating that they depended on methane seepages. In situ Calyptogena and large lucinid colonies have been discovered from the Cambantug Point and the Antipolo Point, respectively.
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