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Kulgemeyer, Tobias; Müller, Hendrik; von Dobeneck, Tilo; Bryan, Karin R; de Lange, Willem P; Battershill, Christopher N (2016): Hysteresis parameters of grab samples from the Bay of Plenty. PANGAEA, https://doi.org/10.1594/PANGAEA.869240, In supplement to: Kulgemeyer, T et al. (2017): Magnetic mineral and sediment porosity distribution on a storm-dominated shelf investigated by benthic electromagnetic profiling (Bay of Plenty, New Zealand). Marine Geology, 383, 78-98, https://doi.org/10.1016/j.margeo.2016.11.014

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Coverage:
Median Latitude: -37.628555 * Median Longitude: 176.258136 * South-bound Latitude: -37.748527 * West-bound Longitude: 176.013200 * North-bound Latitude: -37.436220 * East-bound Longitude: 176.459298
Event(s):
BoP_1 (1) * Latitude: -37.457840 * Longitude: 176.013200 * Location: Bay of Plenty * Method/Device: van Veen Grab (VGRAB) * Comment: December 2013
BoP_2 (2) * Latitude: -37.454560 * Longitude: 176.020170 * Location: Bay of Plenty * Method/Device: van Veen Grab (VGRAB) * Comment: December 2013
BoP_3 (3) * Latitude: -37.449980 * Longitude: 176.029900 * Location: Bay of Plenty * Method/Device: van Veen Grab (VGRAB) * Comment: December 2013
Comment:
Saturation (Ms) and remanent (Mrs) magnetization, coercive force (Hc) and "median remanent hysteretic magnetization" (Hrh) as substitute for the coercivity of remanence for 68 surficial sediment samples collected with a Van Veen grab sampler in the Bay of Plenty, New Zealand. Measurements were taken on a Princeton Measurements Corporation MicroMag 2900 Alternating Gradient Field Magnetometer (300 mT loop).
-Lithofacies 1: A fine sand mostly comprised of quartz and feldspars, ca. 2.5% mafic minerals (pyroxene, hornblende,
biotite, opaque minerals) and volcanic glass.
-Lithofacies 2a: Medium quartz/feldspar sand with ca. 5% mafic minerals and a small amount of volcanic glass.
- Lithofacies 2b: Medium sand without volcanic glass.
- Lithofacies 3a: Coarse sand, similar in composition to lithofacies 2b with additional rock fragments.
- Lithofacies 3b: Coarse to very coarse sand variant of lithofacies 3a.
- Lithofacies 4: Medium sand mixture of terrigenous components comparable to lithofacies 2b and bioclastics (shell fragments).
- Lithofacies 5: A coarse sand, composed of siliciclastics comparable to lithofacies 3a and biogenic debris derived from bivalves and sponges. Pebble-sized and larger rock fragments are common.
- Lithofacies 6: A shell detritus layer covering an unidentified substrate.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventKulgemeyer, Tobias
2Latitude of eventLatitudeKulgemeyer, Tobias
3Longitude of eventLongitudeKulgemeyer, Tobias
4Lithology/composition/faciesLithologyKulgemeyer, Tobias
5Hysteresis, saturation magnetizationMsmA m2/kgKulgemeyer, TobiasMagnetometer, PMC N2900 alternating-gradient force
6Hysteresis, saturation remanenceMrsmA m2/kgKulgemeyer, TobiasMagnetometer, PMC N2900 alternating-gradient force
7CoercivityHckA/mKulgemeyer, TobiasMagnetometer, PMC N2900 alternating-gradient force
8Coercivity of remanenceHcrkA/mKulgemeyer, TobiasMagnetometer, PMC N2900 alternating-gradient forceapproximated by median remanent hysteretic magnetization Hrh
Size:
340 data points

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