Citation:

PANGAEA.971785 (dataset in review)

Name: Isothermal Remanent Magnetization (IRM) acquisition curves for the unclassified IRD > 1mm fractions of sediment core GeoB18530-1
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; grain size distribution; Grand Banks Margin; Heinrich events; Ice-Rafted Detritus; rock magnetism

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Abstract:

IRM acquisition curves (and their derivatives) resolve the cumulative coercivity distribution (and spectrum) of a magnetic mineral assemblage. Here we present IRM data for all extracted unclassified IRD > 1mm fractions. The IRM acquisition curves were acquired in logarithmically increasing pulse field steps from 10 mT to 2600 mT and measured by DC SQUIDS inside the 2G rock magnetometer without exposure to the external geomagnetic field. The varying magnetic peak field values shown here are based on real time peak field measurements by an integrated induction coil. Although samples were previously AF demagnetized, but some samples have hard initial remanent magnetizations, that could not be entirely removed.

Keyword(s):

Geochemistry; grain size distribution; Grand Banks Margin; Heinrich events; Ice-Rafted Detritus; rock magnetism

Related to:

Bukar, Shettima; von Dobeneck, Tilo; Wang, Yiyun; Frederichs, Thomas; Dallanave, Edoardo; St-Onge, Guillaume (submitted): Ice-Rafted Detritus (IRD) of the SE Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 6 - Part II: Magnetic Properties. Geochemistry, Geophysics, Geosystems

References:

von Dobeneck, Tilo; Bukar, Shettima: Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971290

Project(s):

Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic (ArcTrain)

Funding:

German Research Foundation (DFG), grant/award no. 221211316 : GRK/IRTG 1904: ArcTrain - Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic

Petroleum Technology Development Fund (PTDF), grant/award no. Shettima Bukar: Overseas postgraduate scholarship to Shettima Bukar

Coverage:

Latitude: 42.839500 * Longitude: -49.234833

Date/Time Start: 2014-06-14T13:58:00 * Date/Time End: 2014-06-14T13:58:00

Minimum DEPTH, sediment/rock: 5.601 m * Maximum DEPTH, sediment/rock: 10.606 m

Event(s):

GeoB18530-1 (509-1) * Latitude: 42.839500 * Longitude: -49.234833 * Date/Time: 2014-06-14T13:58:00 * Elevation: -1888.0 m * Recovery: 10.74 m * Location: SE Grand Banks Slope * Campaign: * Basis: * Method/Device: Gravity corer (GC)

Comment:

Corresponds to Figure 5a.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Wang, Yiyun		Geocode – 10 ml syringe sample deptha
2	Heinrich event	Heinrich event		Bukar, Shettima		HE stratigraphy based on Ca/Sr
3	Magnetic field at peak magnetization	Bc max	mT	Bukar, Shettima	Pulse magnetizer	Internal pulse coil up to 700mT, external pulse coil up to 2700mT
4	Isothermal remanent magnetization, mass-normalized	IRM mass norm	A*m²/kg	Bukar, Shettima	Pulse magnetizer and cryogenic magnetometer	IRM after pulse magnetization

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

18060 data points

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