The Open Paleontology Journal

2008, 1 : 1-6
Published online 2008 March 11. DOI: 10.2174/1874425700801010001
Publisher ID: TOPALOJ-1-1

RESEARCH ARTICLE
 Pleistocene Planktic Foraminiferal Events in the Northwest Pacific Near Japan

Hanako Domitsu, * and Motoyoshi Oda
Institute of Geology and Paleontology, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan

* Address correspondence to this author at the Institute of Geology and Paleontology, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan; Fax: +81-22-795-6634; E-mail: hana@mail.tains.tohoku.ac.jp

ABSTRACT

Using an age model based on magnetostratigraphic and tephrostratigraphic control points, we assigned ages to two planktic foraminiferal events from the Pleistocene sequence in the northwest Pacific: the first occurrence of Neogloboquadrina pachyderma at 1.25 ± 0.04 Ma and the last occurrence of Neogloboquadrina inglei at 0.73 ± 0.05 Ma.

Keywords:

Planktic foraminifera, biostratigraphy, Pleistocene, Pliocene, northwest pacific.