GRAPE density of ODP Site 145-883

DOI

New composite GRAPE WBD profile from our new splice at ODP site 883. The composite depth scale was created by visual correlation of the shipboard gamma ray attenuation and porosity evaluator (GRAPE) wet bulk density (WBD) measurements between 883B and 883C starting at core 10H and ending at 18H. 883B 11H-1 0–57 cm, 883B 12H-1 0–10 cm, 883B 15H-1 0–20 cm, 883C 15H-1 0–5 cm were not considered in the correlation exercise because the recovered sediments had sidewall cave-in characterized by pebbles typical of the overlying Pleistocene sediments. In almost all cores, recovery was > 100%. To account for this in terms of depth, cores with > 100% recovery were compressed uniformly and fixed to the top drill log depth (depth mbsf) assigned to that core. Subsequent correlation of cores between holes B and C revealed apparent gaps in recovery. Cores were further uniformly compressed to account for the unrecovered sediments and a composite stratigraphic section was stitched together by switching between the two holes. On average, cores were compressed 17% and at most by 28% of their drilled depth (9.5 m). The result of this exercise is a composite section of comparable depth to the driller's shipboard depth scale (109.4 meters below sea floor vs. 108.3 meters common depth) that accounts for all the major stratigraphic features present in the GRAPE WBD profiles of 883B and 883C.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.967367
Related Identifier IsPartOf https://doi.pangaea.de/10.1594/PANGAEA.967342
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.967367
Provenance
Creator Novak, Joseph B ORCID logo; Caballero-Gill, Rocio P; Rose, Rebecca; Herbert, Timothy D ORCID logo; Dowsett, Harry J ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 1459280 https://www.nsf.gov/awardsearch/showAward?AWD_ID=1459280 A New View of Pliocene Glaciations; National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 1545859 https://www.nsf.gov/awardsearch/showAward?AWD_ID=1545859 PIRE: DUST stimulated drawn-down of atmospheric CO2 as a trigger for Northern Hemisphere Glaciation; National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID 1602331 https://www.nsf.gov/awardsearch/showAward?AWD_ID=1602331 Collaborative Research: Did the SE Pacific Gyre become a Hot Spot for N2 Fixation during Dusty Glacial Conditions?
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 13914 data points
Discipline Earth System Research
Spatial Coverage (167.769W, 51.199S, 167.769E, 51.199N); North Pacific Ocean
Temporal Coverage Begin 1992-08-09T09:40:00Z
Temporal Coverage End 1992-08-13T15:15:00Z