Proceedings of the Integrated Ocean Drilling Program 302: Arctic Coring Expedition (ACEX) ...

• Main Authors: Backman, Jan, Moran, Kate, McInroy, David, Brinkhuis, Henk, Clemens, Steven C., Cronin, Thomas, Dickens, Gerald R., Eynaud, Frédérique, Gattacceca, Jérôme, Jakobsson, Martin, Jordan, Richard W., Kaminski, Michael A., King, John, Koç, Nalân, Martinez, Nahysa E., Matthiessen, Jens, Moore, Jr., Theodore C., Onodera, Jonaotaro, O'Regan, Matthew, Pälike, Heiko, Rea, Brice, Rio, Domenico, Sakamoto, Tatsuhiko, Smith, David C., St. John, Kristen, Stein, Ruediger, Suto, Itsuki, Suzuki, Noritoshi, Takahashi, Kozo, Watanabe, Mahito, Yamamoto, Masanobu
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Integrated Ocean Drilling Program Management International, Inc. 2006
• Subjects: Integrated Ocean Drilling Program; IODP; Expedition 302; Site M0001; Site M0002; Site M0003; Site M0004; ACEX; Arctic Coring Expedition; Lomonosov Ridge; Arctic Ocean; Arctic; North Pole
• Online Access: https://dx.doi.org/10.5281/zenodo.10777514; https://zenodo.org/doi/10.5281/zenodo.10777514

The first scientific drilling expedition to the central Arctic Ocean, Integrated Ocean Drilling Program Expedition 302, Arctic Coring Expedition (ACEX), recovered sediment cores to 428 m below seafloor (mbsf) in water depths of ~1300 m, 250 km from the North Pole. Expedition 302’s destination was the Lomonosov Ridge, hypothesized to be a sliver of continental crust that broke away from the Eurasian plate at ~56 Ma. As the ridge moved northward and subsided, marine sedimentation occurred and continues to the present, resulting in what was anticipated from seismic data to be a continuous paleoceanographic record. The elevation of the ridge above the surrounding abyssal plains (~3 km) ensured that sediments atop the ridge were free of turbidites. The primary scientific objective of Expedition 302 was to continuously recover this sediment record and to sample the underlying sedimentary bedrock by drilling and coring from a stationary drillship. The biggest challenge during Expedition 302 was maintaining the ...