Areas of interest:

Sedimentology of siliciclastic sediments and stratigraphy of tectonically active basins

Current projects:

(1) Sequence stratigraphy of tectonically active basins.

The aims of this study are to describe stacking patterns of strata in tectonically active basins such as forearc and intermontane basins, and to estimate tectonic control on the basin fills. The main study areas are the Shizuoka and Boso districts of Japan, the Kathmandu Valley (Nepal), and the Kenya Rift.

(2) Study on grain fabric of gravity flow sediments.

The goal of this study is to understand gravity flow deposits such as turbidites and debris flow deposits, by means of grain fabric analysis.

Recent Publications:

• Tetsuya Sakai, Miwa Yokokawa, Noritaka Endo, Yu'suke Kubo and Fujio Masuda 2002: Grain fabric of experimental gravity flow deposits. Sedimentary Geology, 154: 1-10.
• Tetsuya Sakai, Ananta, P. Gajurel, Hideo Tabata and Bishal, N. Upreti, 2001: Small amplitude lake level fluctuations recorded in aggrading delta deposits of the lower parts of the Thimi and Gokarna Formations (upper Pleistocene), Kathmandu Valley. Journal of the Nepal Geological Society, 25: 43-51.
• Osamu Fujiwara, Fujio Masuda, Tetsuya, Sakai, Toshiaki Irizuki and Keisuke Fuse, 2000: Tsunami deposits in the Holocene bay mud in Southern Kanto region, Pacific coast of Central Japan. Sedimentary Geology, 135: 219-230.
• Tetsuya Sakai, 2000: Reflected turbidites in the Plio-Pleistocene Kakegawa Group. Journal of the Geological Society of Japan, 106: 87-91 (in Japanese with English abstract).
• Tetsuya Sakai and Fujio Masuda, 1998: The relationship between glacio-eustatic parasequences and a third-order sequence in theKakegawa Group, central Japan. Sedimentary Geology, 122: 95-107.