T. Andrén, B.B. Jørgensen, C. Cotterill, S. Green, E. Andrén, J. Ash, T. Bauersachs, B. Cragg, A.-S. Fanget, A. Fehr, W. Granoszewski, J. Groeneveld, D. Hardisty, E. Herrero-Bervera, O. Hyttinen, J.B. Jensen, S. Johnson, M. Kenzler, A. Kotilainen, U. Kotthoff, I.P.G. Marshall, E. Martin, S. Obrochta, S. Passchier, N. Quintana Krupinski, N. Riedinger, C. Slomp, I. Snowball, A. Stepanova, S. Strano, A. Torti, J. Warnock, N. Xiao, and R. Zhang2

T. Andrén, B.B. Jørgensen, C. Cotterill, S. Green, E. Andrén, J. Ash, T. Bauersachs, B. Cragg, A.-S. Fanget, A. Fehr, W. Granoszewski, J. Groeneveld, D. Hardisty, E. Herrero-Bervera, O. Hyttinen, J.B. Jensen, S. Johnson, M. Kenzler, A. Kotilainen, U. Kotthoff, I.P.G. Marshall, E. Martin, S. Obrochta, S. Passchier, N. Quintana Krupinski, N. Riedinger, C. Slomp, I. Snowball, A. Stepanova, S. Strano, A. Torti, J. Warnock, N. Xiao, and R. Zhang2

Operations in Hole M0064A commenced at 1200 h on 20 October 2013 with a remotely operated vehicle survey conducted to assess the seabed for the presence of WWII munitions.The survey covered Holes M0064A, M0064B, and M0064C.No evidence of any dangerous materials on the seabed was identified.Following the survey, the vessel moved back to Hole M0064A and coring operations commenced (Table T1).The first four runs used the piston corer system (PCS) to recover clay.For Run 5, the nonrotating core barrel (NRCB) was used because of the presence of stiffer material indicative of the top of the diamicton unit.Run 6 used the push coring assembly (PCA) in an attempt to improve recovery.Following this, Runs 7-24 (16.05-34.5 meters below seafloor [mbsf]) used the NRCB, and Guar replaced seawater for pumping because of the increased sand content of the sediments.Run 25 was a PCA core, after a perceived failure to latch with the NRCB (no core recovered).Following the PCA, the string was flushed.The NRCB was lowered on the overshot, and latching was achieved.Coring with the NRCB continued for Runs 26-30.Runs 29 and 30 had no recovery, so a hammer sample (Run 31) was taken to prove the ground.The hammer sample recovered 0.08 m of gravel.The final NRCB (Run 32) core recovered 0.15 m of gravel with chalk beneath.

Integrated Ocean Drilling Program Expedition 347 aimed to retrieve sediments from different settings of the Baltic Sea, encompassing the last interglacial–glacial cycle to address scientific questions along four main research themes: 1. Climate and sea level dynamics of marine isotope Stage (MIS) 5, including onsets and terminations; 2. Complexities of the latest glacial, MIS 4–MIS 2; 3. Glacial and Holocene (MIS 2–MIS 1) climate forcing; and 4. Deep biosphere in Baltic Sea Basin (BSB) sediments.

Paleomagnetic analysis and radiocarbon dating of an expanded Holocene deep‐sea sediment sequence recovered by Integrated Ocean Drilling Program (IODP) Expedition 303 from Labrador Sea Site U1305 (Lat.: 57°28.5 N, Long.: 48°31.8 W, water depth 3459 m) provides insights into mechanisms that drive both paleomagnetic secular variation (PSV) and magnetization acquisition in deep‐sea sediments. Seventeen radiocarbon dates on planktonic foraminifera define postglacial (ca. 8 ka) sedimentation rates as ranging from 35 to > 90 cm/kyr. Alternating field (AF) demagnetization of u‐channel samples show that these homogeneous sediments preserve a strong, stable, and consistently well‐defined component magnetization. Normalized remanence records pass reliability criteria for relative paleointensity (RPI) estimates. Assuming that the age of magnetization is most accurately defined by well dated PSV records with the highest sedimentation rates, allows us to estimate and correct for temporal offsets at Site U1305 interpreted to result from postdepositional remanence acquisition at a depth of ∼20 cm. Comparisons indicate that the northern North Atlantic PSV and RPI records are more consistent with European than North American records, and the evolution of virtual geomagnetic poles (VGP) are temporally and longitudinally similar to global reconstructions, though with much larger latitudinal variation. The largest deviations from a geocentric axial dipole (GAD) are observed during times of the highest intensities, in contrast to the usual assumption. These observations are consistent with the idea that PSV in the North Atlantic and elsewhere during the Holocene results from temporal oscillations of high‐latitude flux concentrations at a few recurrent locations.