Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Channell, James E T; Hodell, David A; Xuang, Chuang; Mazaud, Alain; Stoner, Joseph S (2008): Paleomagnetic and rock magnetic data from IODP Site U1308. PANGAEA, https://doi.org/10.1594/PANGAEA.808947, Supplement to: Channell, JET et al. (2008): Age calibrated relative paleointensity for the last 1.5 Myr from IODP Site U1308 (North Atlantic). Earth and Planetary Science Letters, 274, 59-71, https://doi.org/10.1016/j.epsl.2008.07.005

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Integrated Ocean Drilling Program (IODP) Site U1308 (central North Atlantic) records paleomagnetic directional and relative paleointensity (RPI) variations for the last 1.5 Myr, in 110 m of the sediment sequence at a mean sedimentation rate of 7.3 cm/kyr. A detailed benthic oxygen isotope record was combined with RPI to produce an integrated, high-resolution magneto-isotopic stratigraphy for Site U1308. Apart from the well-known polarity reversals in this interval, the Punaruu excursion is recorded at 1092 ka and the Cobb Mountain Subchron in the 1182-1208 ka interval. The paleointensity proxies are determined as slopes of NRM versus ARM and NRM versus ARMAQ (ARM acquisition) with linear correlation coefficients to monitor the quality of the linear fit. The RPI record for Site U1308 is compared with the three other paleointensity records (one from the Western Equatorial Pacific and two from the North Atlantic) that cover the same time interval and have accompanying oxygen isotope records. The Match protocol of Lisiecki and Lisiecki (2002) is used to optimize the correlation of paleointensity records. Beginning with the original (published) age models for each record, the Match routine is used to optimize the RPI correlations to Site U1308, with checks to ensure compatibility with oxygen isotope records. Squared wavelet coherence (WTC) indicates significant improvement in RPI (and oxygen isotope) correlations after matching each RPI record to Site U1308, particularly for periods > 10 kyr. The level of coherence for the Atlantic RPI records and the lower resolution Pacific record implies synchronous global variability (at scales > 10 kyr) that can be attributed to the axial dipole geomagnetic field.
Related to:
Channell, James E T; Hodell, David A (2013): Magnetic signatures of Heinrich-like detrital layers in the Quaternary of the North Atlantic. Earth and Planetary Science Letters, 369-370, 260-270, https://doi.org/10.1016/j.epsl.2013.03.034
Channell, James E T; Hodell, David A; Romero, Oscar E; Hillaire-Marcel, Claude; de Vernal, Anne; Stoner, Joseph S; Mazaud, Alain; Röhl, Ursula (2012): A 750-kyr detrital-layer stratigraphy for the North Atlantic (IODP Sites U1302–U1303, Orphan Knoll, Labrador Sea). Earth and Planetary Science Letters, 317-318, 218-230, https://doi.org/10.1016/j.epsl.2011.11.029
Hodell, David A; Channell, James E T; Curtis, Jason H; Romero, Oscar E; Röhl, Ursula (2008): Onset of 'Hudson Strait' Heinrich Events in the eastern North Atlantic at the end of the middle Pleistocene transition (~640 ka)? Paleoceanography, 23(4), PA4218, https://doi.org/10.1029/2008PA001591
Coverage:
Latitude: 49.877760 * Longitude: -24.238110
Date/Time Start: 2004-10-30T00:00:00 * Date/Time End: 2004-10-30T00:00:00
Event(s):
303-U1308 * Latitude: 49.877760 * Longitude: -24.238110 * Date/Time: 2004-10-30T00:00:00 * Elevation: -3871.0 m * Penetration: 1253.5 m * Recovery: 1246 m * Location: North Atlantic * Campaign: Exp303 (North Atlantic Climate 1) * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 134 cores; 1246.0 m cored; 7.5 m drilled; 95.4 % recovery
Size:
6 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding: