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 [dataset]. 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):
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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kulgemeyer, Tobias | |||
| 2 | Latitude of event | Latitude | Kulgemeyer, Tobias | |||
| 3 | Longitude of event | Longitude | Kulgemeyer, Tobias | |||
| 4 | Lithology/composition/facies | Lithology | Kulgemeyer, Tobias | |||
| 5 | Hysteresis, saturation magnetization | Ms | mA m2/kg | Kulgemeyer, Tobias | Magnetometer, PMC N2900 alternating-gradient force | |
| 6 | Hysteresis, saturation remanence | Mrs | mA m2/kg | Kulgemeyer, Tobias | Magnetometer, PMC N2900 alternating-gradient force | |
| 7 | Coercivity | Hc | kA/m | Kulgemeyer, Tobias | Magnetometer, PMC N2900 alternating-gradient force | |
| 8 | Coercivity of remanence | Hcr | kA/m | Kulgemeyer, Tobias | Magnetometer, PMC N2900 alternating-gradient force | approximated by median remanent hysteretic magnetization Hrh |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
340 data points