PANGAEA_927015 Porosity analysis from IODP Site 356-U1461 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja Porosity analysis from IODP Site 356-U1461 2024-12-14 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.927015 Investigator Maximilian Hallenberger maximilian.hallenberger@emr.rwth-aachen.de Earth Science Event label Latitude of event Longitude of event Date/Time of event DEPTH, sediment/rock Porosity geoscientificInformation 356-U1461A 356-U1461B 356-U1461C Aragonite-needle mud Australian Shelf Autoclave piston corer Distally steepened ramp Exp356 Half-length advanced piston corer IODP Lowstand shedding NWS Ooids Rotary core drilling Calculated Joides Resolution 2015-08-17 2015-11-20 Complete -20.2144 -20.214045 115.065615 115.0658 0.71 m (DEPTH, sediment/rock) 77.11 m (DEPTH, sediment/rock) IODP Integrated Ocean Drilling Program / International Ocean Discovery Program unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 42 data points text/tab-separated-values Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2022): Climate and sea-level controlling internal architecture of a Quaternary carbonate ramp (Northwest Shelf of Australia). Sedimentology, 69(3), 1276-1300, https://doi.org/10.1111/sed.12948 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): Abundance of non-skeletal grains from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927008 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): Bulk density from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927012 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): Lightness measurement from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927013 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): Mineral determination from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927014 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): P-wave velocity measurement from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927017 Hallenberger, Maximilian; Reuning, Lars; Back, Stefan; Gallagher, Stephen John; Iwatani, Hokuto; Lindhorst, Katja (2024): XRF measurement from IODP Site 356-U1461 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927018

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. Porosity data is used to assess the effect of facies related porosity changes onto the creation of seismic reflections. Generally, porosity values are high (~60%) where sediments are composed of fine-grained aragonite needle mud whereas bioclastic or non-skeletal grain rich sediments display lower porosities (40-50%). In effect, strong acoustic impedance contrasts are observed wherever facies changes into fine-grained aragonite mud. This agrees with observations in seismic, which reveal the occurrence of strong seismic reflections wherever larger facies changes occur. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.927015"! ** Porosity was determined on discrete samples on shipboard during Expedition 356. Selected samples where saturated with seawater and subsequently tried to determine wet and dry weight and volume. Based on these parameters porosity was calculated.

http://en.wikipedia.org/wiki/Porosity Porosity https://doi.org/10.1111/sed.12948 Climate and sea-level controlling internal architecture of a Quaternary carbonate ramp (Northwest Shelf of Australia) https://doi.org/10.14379/iodp.proc.356.106.2017 356-U1461A https://doi.org/10.14379/iodp.proc.356.106.2017 356-U1461B https://doi.org/10.14379/iodp.proc.356.106.2017 356-U1461C https://doi.pangaea.de/10.1594/PANGAEA.927008 Abundance of non-skeletal grains from IODP Site 356-U1461 https://doi.pangaea.de/10.1594/PANGAEA.927012 Bulk density from IODP Site 356-U1461 https://doi.pangaea.de/10.1594/PANGAEA.927013 Lightness measurement from IODP Site 356-U1461 https://doi.pangaea.de/10.1594/PANGAEA.927014 Mineral determination from IODP Site 356-U1461 https://doi.pangaea.de/10.1594/PANGAEA.927017 P-wave velocity measurement from IODP Site 356-U1461 https://doi.pangaea.de/10.1594/PANGAEA.927018 XRF measurement from IODP Site 356-U1461 https://www.iodp.org/ IODP https://www-odp.tamu.edu:443/resolutn.html Joides Resolution DIF 9.4 2024-12-14 2026-06-11