Topic
planktonic foraminifera
4
Cenomanian
3
Cretaceous
2
Hobetsu
2
Hokkaido
2
Turonian
2
Yezo Group
2
Deep-sea Core
1
Helvetoglobotruncana
1
Helvetoglobotruncana helvetica
1
Isotopic Ratio
1
Kojyakui-sho
1
Kuroshio Front
1
Late Quaternary
1
Microfossils
1
Middle Miocene
1
Miocene Climatic Optimum
1
Obata Formation
1
Oceanic Anoxic Event (OAE)
1
Oxygen-carbon
1
Oyubari section
1
Paleoceanography
1
Pueblo section
1
T) boundary
1
Turonian(C
1
Whiteinella archaeocretacea Zone
1
bathyal zone
1
bio-stratigraphy
1
biostratigraphy carbon
1
carbon isotope
1
helvetica
1
isotope
1
ostracods
1
σ^<13>C spike
1
古水温復元
1
年代決定
1
微化石
1
海底コア
1
海洋古環境
1
熱帯太平洋
1
第四紀
1
第四紀後期
1
酸素・炭素同位体比
1
黒潮前線
1