Kahl, Wolf-Achim; Cheviet, Alban; Galerne, Christophe: X-ray µ-CT data reconstruction, image stacks of selected samples from IODP Sites 385-U1547 (Holes B, C, and E) and 385-U1548 (Holes A and C) [datasets] [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.986652 (dataset in review)
Abstract:
This contribution comprises true-3D volume datasets (Digital drill cores), acquired by a X-ray Computed Microtomography (µ-CT) survey on selected drill core material recovered from Site U1547 (Holes B, C, and E) and Site U1548 (Holes A and C), drilled by IODP Expedition 385 in the Guaymas Basin, Gulf of California (Teske et al., 2021).
The fourteen samples reported by Cheviet et al. (in rev.) are peperitic material formed by magma-sediment interactions, interpreted to have occurred during the emplacement of a funnel-shaped igneous sill intrusion at the subseafloor (Galerne et al., 2025). The scanned samples are irregularly shaped pieces featuring a wide range of textures including large vesicles and fractures with injected sediments and secondary mineral precipitation. These analyses complement a set of X-ray μ-CT scans from the same magmatic body (Kahl and Galerne, 2025). The X-ray μ-CT scans were performed using the CT-ALPHA system of the MAPEX Center for Materials and Processes at the University of Bremen, Germany. This µ-CT survey has been conducted as part of IODP Expedition 385 Post-cruise research, the funding for these analyses are provided by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) funding priority program SPP 527 through fund granted to Christophe Galerne (Project number 447431016 #GA 1939/6-1, and #GA 1939/6-2).
The µ-CT-derived image volumes comprise the true 3-D spatial arrangement of fabric compounds in the rock. In the reconstructed 16-bit greyscale volume data, areas of highly attenuating phases (e.g. sulfides, calcite and porosity) are encoded in light grey value. Base on their density sulphides (yellow) and porosity (red) were isolate in different scan to study the distribution of sulphides and porosity at magma-sediment contact. As an added value to the non-destructive visualization procedure, the reconstructed X-ray micro-CT scans of the studied drill core material provide volume reconstructions which can serve as digitypes that may be studied as digital facsimile without the necessity of consulting / modifying / destructive interactions of the actual type specimens (e. g. for investigations regarding the fabric relations). These image data can be used for quantitative 3D image analysis, e. g. to derive empirical relations between porosity, the extent of replacement of primary phases, and the distribution of secondary phases (and many more).
Supplement to:
Cheviet, Alban; Choulet, Flavien; Buatier, Martine D; Galerne, Christophe; Bach, Wolfgang; Kahl, Wolf-Achim; Riboulleau, Armelle; Pastor, Lucie (submitted): Do magmatic sill intrusions simply liberate the sulphur of the sedimentary reservoirs? Geochimica et Cosmochimica Acta
Related to:
Kahl, Wolf-Achim; Galerne, Christophe (2025): X-ray µ-CT data reconstruction, image stacks of selected samples from IODP Site 385-U1547 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974133
References:
Galerne, Christophe; Cheviet, Alban; Kahl, Wolf-Achim; Wiggers, Christin; Bach, Wolfgang; Neumann, Florian; Buatier, Martine D; Höfig, Tobias Walter; Lizarralde, Daniel; Teske, Andreas P; Peña-Salinas, Manet; Karstens, Jens; Böttner, Christoph; Berndt, Christian; Aiello, Ivano W; Marsaglia, Kathleen M; Gontharet, Swanne; Kuhnert, Henning; Stock, Joann M; Negrete-Aranda, Raquel; Zhang, Junli; Kopf, Achim J (2025): Sill Stacking in Subseafloor Unconsolidated Sediments and Control on Sustained Hydrothermal Systems: Evidence From IODP Drilling in the Guaymas Basin, Gulf of California. Journal of Geophysical Research: Solid Earth, 130(3), e2024JB030354, https://doi.org/10.1029/2024JB030354
Teske, Andreas P; Lizarralde, Daniel; Höfig, Tobias Walter; Aiello, Ivano W; Buatier, Martine D; Edgcomb, Virginia P; Galerne, Christophe; Gontharet, Swanne; Heuer, Verena B; Jiang, Shijun; Kars, Myriam; Khogenkumar Singh, S; Kim, Ji-Hoon; Koornneef, Louise; Marsaglia, Kathleen M; Meyer, Nicolette; Morono, Yuki; Negrete-Aranda, Raquel; Neumann, Florian; Pastor, Lucie; Peña-Salinas, Manet; Perez-Cruz, Ligia; Ran, Lishan; Riboulleau, Armelle; Sarao, John A; Schubert, Florian; Stock, Joann M; Toffin, Laurent; Xie, Wei; Yamanaka, Toshiro; Zhuang, Guang-Chao (2021): Site U1546. In: Teske, A, Lizarralde, D, Höfig, TW, Expedition 385 Scientists (ed.), Guaymas Basin Tectonics and Biosphere, Proceedings of the International Ocean Discovery Program, 385, International Ocean Discovery Program, https://doi.org/10.14379/iodp.proc.385.104.2021
Project(s):
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 5459347: SPP 527: Bereich Infrastruktur - "International Ocean Discovery Program" (IODP)
Coverage:
Median Latitude: 27.505202 * Median Longitude: -111.680236 * South-bound Latitude: 27.504110 * West-bound Longitude: -111.681110 * North-bound Latitude: 27.506900 * East-bound Longitude: -111.678900
Date/Time Start: 2019-10-16T21:25:00 * Date/Time End: 2019-11-08T00:10:00
Minimum DEPTH, sediment/rock: 66.92 m * Maximum DEPTH, sediment/rock: 203.39 m
Event(s):
385-U1547B * Latitude: 27.506900 * Longitude: -111.678900 * Date/Time Start: 2019-10-16T21:25:00 * Date/Time End: 2019-10-20T05:00:00 * Elevation: -1732.2 m * Number of cores: 50 (APC = 10, HLAP = 14, XCB = 26) * Penetration: 209.8 m * Recovery: 76.9 % * Location: Guaymas Basin * Campaign: Exp385 * Basis: Joides Resolution * Method/Device: Core drilling (CDRILL)
385-U1547C * Latitude: 27.504500 * Longitude: -111.680790 * Date/Time Start: 2019-10-22T03:00:00 * Date/Time End: 2019-10-23T02:30:00 * Elevation: -1732.2 m * Penetration: 159.2 m * Recovery: 8.96 m * Campaign: Exp385 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)
385-U1547E * Latitude: 27.506000 * Longitude: -111.679590 * Date/Time Start: 2019-11-04T08:30:00 * Date/Time End: 2019-11-06T06:45:00 * Elevation: -1732.0 m * Penetration: 191.2 m * Recovery: 44.86 m * Campaign: Exp385 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kahl, Wolf-Achim | |||
| 2 | Sample code/label | Sample label | Kahl, Wolf-Achim | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Kahl, Wolf-Achim | IODP Depth Scale Terminology | Geocode – mbsf |
| 4 | Rock type | Rock | Kahl, Wolf-Achim | |||
| 5 | Texture | Texture | Kahl, Wolf-Achim | |||
| 6 | Voxel size of reconstructed scan | Voxel size rec | µm | Kahl, Wolf-Achim | ||
| 7 | Binary Object | Binary | Kahl, Wolf-Achim | Stack, Computed Tomography | ||
| 8 | Image, sediment core | IMAGE sed core | Kahl, Wolf-Achim | Volren, Computed Tomography | ||
| 9 | Image, sediment core | IMAGE sed core | Kahl, Wolf-Achim | VolrenMIP, Computed Tomography | ||
| 10 | Image, sediment core | IMAGE sed core | Kahl, Wolf-Achim | 3 slices, Computed Tomography |
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:
112 data points