Neres, Marta; Batista, Luis; Terrinha, Pedro; Nogueira, Pedro; Rodrigues, Diogo; Hensen, Christian (2024): Anisotropy of magnetic susceptibility (AMS) and natural remanent magnetization (NRM) data from sediment cores along the Gloria Fault (North Atlantic) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967387
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Abstract:
The present dataset contains results from magnetic data measurements – data files and plots –on sediment cores collected during the M162 marine campaign, conducted onboard the R/V Meteor (Geomar, Germany) from 06/03/2020 to 11/04/2020 along the Gloria Fault - the Atlantic plate boundary between the Africa and the Eurasia plates. 46 gravity cores (39 with successful recovery) were collected on 6 geographically defined working areas (WA1 to WA6), from the Azores plateau to the Josephine seamount area. Magnetic susceptibility was measured onboard after core opening, using a KT10 magnetic hand susceptibilimeter (Bartington). Generally, one measurement was taken at each 5 cm, except when the core was very monotonous (each 10 cm) or when singular sedimentary horizons occurred in between each 5 cm mark. In addition to onboard measurements, 26 cores were also sampled using 2×2 cm3 plastic boxes, standard for laboratory magnetic analysis. Magnetic measurements were later conducted on the Paleomagnetism Laboratory of Instituto Dom Luiz (FCUL, Lisbon, Portugal), and included: anisotropy of magnetic susceptibility (AMS), using a MFK1 Kappabridge (Agico), natural remanent magnetization (NRM) using a JR6 spinner magnetometer (Agico), and its alternating field demagnetization, using a LDA-3 AF demagnetizer (Agico).
Keyword(s):
Coverage:
Median Latitude: 37.337146 * Median Longitude: -19.793806 * South-bound Latitude: 36.896550 * West-bound Longitude: -26.125200 * North-bound Latitude: 37.990000 * East-bound Longitude: -14.918220
Date/Time Start: 2020-03-07T09:55:32 * Date/Time End: 2020-04-03T18:14:15
Minimum Elevation: -5665.0 m * Maximum Elevation: -3001.0 m
Event(s):
M162_3-1 * Latitude: 37.953300 * Longitude: -26.125200 * Date/Time: 2020-03-07T09:55:32 * Elevation: -3228.0 m * Location: North Atlantic Ocean * Campaign: M162 (GLORIA-FLOW) * Basis: Meteor (1986) * Method/Device: Gravity corer (GC)
M162_4-1 * Latitude: 37.990000 * Longitude: -26.118700 * Date/Time: 2020-03-07T12:34:31 * Elevation: -3218.0 m * Location: North Atlantic Ocean * Campaign: M162 (GLORIA-FLOW) * Basis: Meteor (1986) * Method/Device: Gravity corer (GC)
M162_5-1 * Latitude: 37.980920 * Longitude: -26.108030 * Date/Time: 2020-03-07T14:54:38 * Elevation: -3215.0 m * Location: North Atlantic Ocean * Campaign: M162 (GLORIA-FLOW) * Basis: Meteor (1986) * Method/Device: Gravity corer (GC)
Comment:
M162-GC_loc.xls - Date, geographical location, label, cruise station and recovered length of each gravity core (GC). Each GC is labeled in successive order of recovery (1-45), and corresponds to a respective M162 station / event location in https://www.pangaea.de/expeditions/events/M162.
(A) Data_files:
AMS:
M162.ams - AMS data, binary file to be read by Agico software (Anisoft)
M162-AMS.txt - AMS data, text file
NRM_AFdemag:
AFdemag-M162.jr6 - AF demagnetization file, Agico format (Remasoft)
GCXX_YY.rs3 - Principal component analysis for calculation of characteristic remanent magnetization (ChRM), Agico format (Remasoft)
Onboard_Km:
GCXX_km_obs.txt - Magnetic susceptibility measured onboard, for each core
(B) Plots_figures:
WA_GC.png - Logs of the in-depth variation of magnetic parameters, for each core
M162_ams_GC.png - Stereographic plots of AMS, for each core
GCXX_1.png - Stereographic plots of demagnetization and characteristic remanent magnetization vector, for 9 example samples
Units:
Magnetic susceptibility in SI units
Magnetization in A/m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Neres, Marta | |||
| 2 | File content | Content | Neres, Marta | |||
| 3 | Binary Object (Media Type) | Binary (Type) | Neres, Marta | |||
| 4 | Binary Object (File Size) | Binary (Size) | Bytes | Neres, Marta |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
8 data points