Romanova, Aleksandra; Pletnev, Sergey; Utyupin, Leonid; Maltsev, Artem; Pashkova, Galina; Zhilicheva, Alena; Yakovenko, Viktoriya; Shakirov, Renat; Mayorov, Vitaliy: X-ray microtomography data of Neogloboquadrina pachyderma from methane seepage areas, Sea of Okhotsk, showing minor, moderate, and major diagenetic alteration [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993834 (dataset in review)
Abstract:
This dataset presents X-ray microtomography data of 23 Neogloboquadrina pachyderma tests recovered from a methane seepage area in the Sea of Okhotsk (station LV 50-05). Specimens were selected from four sediment intervals (20–25 cm, 120–125 cm, 210–215 cm, and 470–475 cm) to capture a range of diagenetic alteration intensities (minor, moderate, and major) associated with methane-derived authigenic carbonate (MDAC) precipitation. For each specimen, the following volumetric parameters were determined using SkyScan 1272 microtomography and CT Analyser software: total sample volume (Vsample), test volume (Vtest), solid phase volume (Vsolids), porosity (void volume fraction), and the volume fractions of shell and inclusions. X-ray density values (gray values) were measured for both the carbonate test and solid inclusions. The data enable quantitative assessment of morphological alterations in foraminiferal tests resulting from authigenic carbonate precipitation. These measurements support the interpretation of diagenetic overprints in fossil foraminifera from methane-influenced environments and provide a basis for distinguishing between primary biogenic and secondary authigenic carbonate phases.
Keyword(s):
Supplement to:
Romanova, Aleksandra; Pletnev, Sergey; Utyupin, Leonid; Maltsev, Artem; Pashkova, Galina; Zhilicheva, Alena; Yakovenko, Viktoriya; Shakirov, Renat; Mayorov, Vitaliy (in review): Geochemical signatures of diagenetic alteration in Neogloboquadrina pachyderma from methane seepage areas: Evidence from the Sea of Okhotsk. Marine Micropaleontology
Coverage:
Latitude: 53.373900 * Longitude: 144.536600
Date/Time Start: 2010-06-12T18:18:00 * Date/Time End: 2010-06-12T18:18:00
Minimum DEPTH, sediment/rock: 0.225 m * Maximum DEPTH, sediment/rock: 4.770 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Analytical method | Analyt method | Romanova, Aleksandra | |||
| 2 | Sample ID | Sample ID | Romanova, Aleksandra | |||
| 3 | Depth, sediment/rock, top/minimum | Depth sed top | m | Romanova, Aleksandra | ||
| 4 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Romanova, Aleksandra | ||
| 5 | DEPTH, sediment/rock | Depth sed | m | Romanova, Aleksandra | Geocode | |
| 6 | Species, unique identification | Species UID | Romanova, Aleksandra | Reference in WoRMS (WoRMS) | ||
| 7 | Species, unique identification (Semantic URI) | Species UID (Semantic URI) | Romanova, Aleksandra | Reference in WoRMS (WoRMS) | ||
| 8 | Species, unique identification (URI) | Species UID (URI) | Romanova, Aleksandra | Reference in WoRMS (WoRMS) | ||
| 9 | Sample volume | Samp vol | mm3 | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 10 | Void volume | Void vol | mm3 | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 11 | Porosity | Poros | % | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | Share of air in the sample. |
| 12 | Solid phase volume | Solid vol | mm3 | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 13 | Solid phase, fraction | Solid frac | % | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | Share of solids in the sample. |
| 14 | Shell volume | Shell vol | mm3 | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 15 | Shells, fraction | Shells frac | % | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | Share of shell in the sample, |
| 16 | Density, optical as gray value | Density opt gray | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | Shades of gray from shells | |
| 17 | Inclusion volume | Inclusion vol | mm3 | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 18 | Inclusion, fraction | Inclu frac | % | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | |
| 19 | Density, optical as gray value | Density opt gray | Romanova, Aleksandra | High-resolution 3D X-ray microscope, Bruker, SKYSCAN 1272 | Shades of gray from inclusions |
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:
490 data points