Changes in marine ecosystems and earth surface environments revealed by reef systems during the Cambrian greenhouse period
Project/Area Number |
24740350
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Stratigraphy/Paleontology
|
Research Institution | Naruto University of Education (2013-2014) Osaka City University (2012) |
Principal Investigator |
ADACHI NATSUKO 鳴門教育大学, 大学院学校教育研究科, 准教授 (40608759)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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 | カンブリア紀 / 古生代 / 礁生態系 / 微生物類 / 海洋古環境 / 温室期 / 炭酸塩岩 / 層位・古生物学 / 微生物岩 / 造礁生物 / 古環境 / 生物礁 / 微生物礁 / 古海洋環境 / 中国 / 環境変遷 |
Outline of Final Research Achievements |
This study examines the modes of construction and succession of Cambrian reefs in South and North China. The transition in composition and structure from archaeocyath-bearing to purely microbial reefs occurred in the Cambrian late Epoch 2 in South China. This change was caused by a decline in the diversity of metazoans, and was accompanied by a reduction in the abundance of reefs, possibly related to the late Epoch 2 regression. Cambrian Series 3 lithistid sponge-microbial reefs are found in North China and are precursors of the sponge-microbial reefs that dominated worldwide in the Early Ordovician. The findings suggest that lithistid sponge-bearing reefs were more extensive during the period from Cambrian Epoch 3 to the Furongian than previously thought.
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Report
(4 results)
Research Products
(24 results)