Depositional ratio and cycles in the Rasthof cap carbonate of Namibia

Research Project

Project/Area Number	20606003
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	地球システム変動
Research Institution	Nagoya University of Arts
Principal Investigator	TOJO Bunji Nagoya University of Arts, 人間発達学部, 講師 (50422704)
Co-Investigator(Renkei-kenkyūsha)	SHINICHI Kawakami 岐阜大学, 教育学部, 教授 (80183036)
Project Period (FY)	2008 – 2010
Project Status	Completed (Fiscal Year 2010)
Budget Amount *help	¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000) Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000) Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords	スノーボールアース / 地質学 / 全球凍結 / 原生代後期 / キャップカーボネート / 気候変動
Research Abstract	Rock specimens of Rasthof formation which covers Neoprpterozoic glacial deposit in Namibia were continuously sampled. These show the cyclic fluctuation in the amount of the carbonate minerals along vertical direction. Measurements reveal that the content of iridium in the specimens fluctuates with the carbonate cycle. It is concluded that the depositional ratio of the Rasthof cap carbonate periodically changes with kind of minerals if the amount of iridium in the specimens reflect in the depositional ratio.

Report

(4 results)