Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: Bulk density from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927012 (dataset in review)
Abstract:
The North West Shelf of Australia is an extensive tropical carbonate ramp and forms an important template for the interpretation of similar systems in the sedimentary record. Yet, little is known about the development of the distally steepened ramp from the middle to late Quaternary, a period of high frequency glacioeustatic changes in sea level and climate. This research describes core and seismic-reflection data from a mid- to outer ramp transect at the Northwest Shelf. Information on bulk density was used for the creation of an acoustic impedance log as well as to determine the influence of sedimentary facies and mineralogy on the creation of seismic reflections. Observed bulk density is strongly correlated to facies related changes in mineralogy and porosity. Low porosity aragonitic sections composed of non-skeletal grains display the largest bulk densities. In comparison, bioclastic sediments, which are largely composed of the less dense calcite, have average bulk densities. Lowest bulk densities can be observed in aragonitic mudstones. This is attributed to the high amounts of microporosity present in this facies. Based on these observations, changes in acoustic impedance are to be expected during facies transitions. Thus, reflections observed in seismic can be linked to changes in the sedimentary system.
Keyword(s):
Related to:
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: Abundance of non-skeletal grains from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927008
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (submitted): Internal Architecture of a carbonate ramp exposed to high amplitude sea-level fluctuations: Evidence from the NW shelf of Australia. Sedimentology
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: Lightness measurement from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927013
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: Mineral determination from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927014
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: P-wave velocity measurement from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927017
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: Porosity analysis from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927015
Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja: XRF measurement from IODP Site 356-U1461. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927018
Project(s):
Coverage:
Median Latitude: -20.214300 * Median Longitude: 115.065750 * South-bound Latitude: -20.214400 * West-bound Longitude: 115.065700 * North-bound Latitude: -20.214200 * East-bound Longitude: 115.065800
Date/Time Start: 2015-08-17T18:25:00 * Date/Time End: 2015-08-18T16:00:00
Minimum DEPTH, sediment/rock: 0.05 m * Maximum DEPTH, sediment/rock: 73.14 m
Event(s):
356-U1461A * Latitude: -20.214400 * Longitude: 115.065800 * Date/Time: 2015-08-17T18:25:00 * Elevation: -127.2 m * Penetration: 284.70 m * Recovery: 287.59 m * Campaign: EXP356 * Basis: Joides Resolution * Method/Device: Half-length advanced piston corer (HLAPC)
356-U1461B * Latitude: -20.214200 * Longitude: 115.065700 * Date/Time: 2015-08-18T16:00:00 * Penetration: 879.20 m * Recovery: 743.24 m * Campaign: EXP356 * Basis: Joides Resolution * Method/Device: Autoclave piston corer (APC)
Comment:
Bulk density was measured on shipboard during IODP Expedition 356. The measurement was performed with a Whole-Round Multisensor Logger (WRMSL), which simultaneously measures a multitude of petrophysical properties on the encased whole core. Bulk density is based on the attenuation of a ^137^Cs gamma ray beam.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hallenberger, Maximilian | |||
| 2 | Latitude of event | Latitude | Hallenberger, Maximilian | |||
| 3 | Longitude of event | Longitude | Hallenberger, Maximilian | |||
| 4 | Date/Time of event | Date/Time | Hallenberger, Maximilian | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Hallenberger, Maximilian | Geocode – Depth CSF-A (m) | |
| 6 | DEPTH, sediment/rock | Depth sed | m | Hallenberger, Maximilian | Geocode – Depth CCSF-A (m) | |
| 7 | Density | Density | g/cm3 | Hallenberger, Maximilian | Whole-round multisensor core logger (MSCL-W) (GeoTek) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
1339 data points