Channell, James E T; Hodell, David A; Lehman, Benoît (1997): Age model of ODP Site 162-983 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.715010, Supplement to: Channell, JET et al. (1997): Relative geomagnetic paleointensity and d18O at ODP Site 983 (Gardar Drift, North Atlantic) since 350 ka. Earth and Planetary Science Letters, 153(1-2), 103-118, https://doi.org/10.1016/S0012-821X(97)00164-7
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
At ODP Site 983, relative geomagnetic paleointensity and planktic and benthic delta18O records have been acquired for the last 350 kyr. The mean sedimentation rate in this interval is 11.3 cm/kyr. Magnetic properties and hysteresis ratios indicate that pseudo-single domain magnetite is the remanence carrier. Volume susceptibility (kappa), anhysteretic (ARM) and isothermal (IRM) remanence values vary by a factor of 3-4, well within the criteria usually cited for paleointensity studies. Natural remanent magnetization (NRM) is normalized by ARM and IRM to acquire the paleointensity proxy. Arithmetic means of NRM/ARM and NRM/IRM, calculated for five demagnetization steps in the 25-45 mT range, constitute the relative paleointensity estimates. Some paleointensity lows (particularly those at ~40, ~120 and ~188 ka) are associated with directional excursions of the field, especially the event at ~188 ka (referred to here as the Iceland Basin Event) that constitutes a short-lived polarity reversal. For the last 200 kyr, the records can be correlated with other high-resolution paleointensity records such as those from the Labrador Sea, Mediterranean/Somali Basin and Sulu Sea, implying that the millennial scale features are globally synchronous. A labeling system for paleointensity features is proposed that ties prominent highs and lows to oxygen isotope stages.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 60.403500 * Longitude: -23.640667
Date/Time Start: 1995-07-21T00:00:00 * Date/Time End: 1995-07-24T00:00:00
Event(s):
162-983 * Latitude: 60.403500 * Longitude: -23.640667 * Date/Time Start: 1995-07-21T00:00:00 * Date/Time End: 1995-07-24T00:00:00 * Elevation: -1983.7 m * Penetration: 766.5 m * Recovery: 798 m * Location: South Atlantic Ocean * Campaign: Leg162 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 82 cores; 766.5 m cored; 0 m drilled; 104.1% recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Channell, JET; Hodell, DA; Lehman, B (1997): (Table 1) Age model of ODP Site 162-983. https://doi.org/10.1594/PANGAEA.715008
- Channell, JET; Hodell, DA; Lehman, B (1997): (Table 2, Figure 13) Ages of NRM/IRM ties to the correlative oxygen isotope stages. https://doi.org/10.1594/PANGAEA.715009