Pacific Equatorial Age Transect

Expedition 321: Pacific Equatorial Age Transect/Juan de Fuca

5 May – 5 July 2009

Expedition 321 is grouped into the same science program as 320, and will continue the drilling, coring and logging program. The two expeditions will use data they gather and combine it will seismic reflection studies of regional sedimentation so that equatorial Pacific sediment history can be reconstructed with high confidence, and improve upon earlier reconnaissance work.

• IODP Expeditions 320 and 321

Logging scientist

• Louise Anderson

Expedition 320: Pacific Equatorial Age Transect

5 March – 5 May 2009

This expedition will employ the JOIDES Resolution's unique capabilities and recover seafloor sediments to study ocean circulation and productivity.

The Pacific Equatorial Age Transect expeditions (320 and 321) aim to recover a continuous Cenozoic record (from 65.5 million years ago to the present) of the equatorial Pacific by drilling at the paleoposition of the Equator at successive crustal ages on the Pacific plate. This will also help scientists to understand how the Earth was able to maintain very warm climates, relative to the 20th century, even though solar radiation received at the earth’s surface remained nearly constant for the last 55 million years. Alumni Dr Peter Fitch sailed as a Physical Properties Scientist.

• IODP Expeditions 320 and 321

Logging staff scientist

• Louise Anderson

Publications

As Logging Staff Scientist, Louise Anderson is a co-author on the following expedition-related publications.

Preliminary reports

• Pälike, H., Nishi, H., Lyle, M., Raffi, I., Klaus, A., Gamage, K. and the Expedition 320/321 Scientists. 2009. Integrated Ocean Drilling Program Expedition 320 Preliminary Report. Pacific Equatorial Age Transect. doi:10.2204/iodp.pr.320.2009
• Lyle, M., Raffi, I., Pälike, H., Nishi, H., Gamage, K., Klaus, A. and the Expedition 320/321 Scientists. 2009. Integrated Ocean Drilling Program Expedition 321 Preliminary Report. Pacific Equatorial Age Transect. doi:10.2204/iodp.pr.321.2009

Expedition proceedings

• Pälike, H., Lyle, M., Nishi, H., Raffi, I., Gamage, K., Klaus, A., and the Expedition 320/321 Scientists, 2010. Proc. IODP, 320/321: Tokyo (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/iodp.proc.320321.2010

Scientific Drilling Journal

Lyle, M., Pälike, H., Nishi, H., Raffi, I., Gamage, K., Klaus, A., and the IODP Expeditions 320/321 Science Party, 2010. The Pacific Equatorial Age Transect, IODP Expeditions 320 and 321: building a 50-million-year-long environmental record of the equatorial Pacific Ocean. Sci. Drill., 9:4–15. doi:10.2204/iodp.sd.9.01.2010