Nirenberg, Jared E; Gilroy, Sofia; Abell, Jordan T; Herbert, Timothy D: X-ray fluorescence elemental counts and mass accumulation rates of Miocene sediments from ODP Site 145-884 in the subpolar North Pacific [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993685 (dataset in review)
Abstract:
We performed X-ray fluorescence (XRF) core scanning on archive halves of cores from ODP Site 145-884 using an Avaatech core scanner at the Gulf Coast Repository. We report XRF counts for Al, Ar, Ca, Fe, K, Mn, S, Si, and Ti from the 10 kV scan (no filter) and counts for Ba from the 50 kV scan (Cu filter). Measurements with Ar counts greater than 0 were removed due to significant interference from air. After calibration to sample measurements, we estimate the fraction of sediment comprised of calcium carbonate (using Ca/Ti from XRF), biogenic silica (using Ti/Si from XRF), and detrital material (the remaining material) at each scanning point. The sum of these three fractions was assumed to be 100% of the sediment. Mass accumulation rates for each component were calculated using GRAPE density measurements from Rea et al. (1993) and age model-derived sedimentation rates from Nirenberg et al. (2025).
Keyword(s):
References:
Nirenberg, Jared E; Herbert, Timothy D (2024): North Pacific warmth synchronous with the Miocene Climatic Optimum. Geology, https://doi.org/10.1130/G52432.1
Rea, David K; Basov, L A; Janecek, Thomas R; Palmer-Julson, Amanda; et al. (1993): Proceedings of the Ocean Drilling Program|145 Initial Reports. Proceedings of the Ocean Drilling Program, Ocean Drilling Program, 145, 1040 pp, https://doi.org/10.2973/odp.proc.ir.145.1993
Coverage:
Latitude: 51.450400 * Longitude: 168.337100
Date/Time Start: 1992-08-20T18:00:00 * Date/Time End: 1992-08-24T11:00:00
Minimum DEPTH, sediment/rock: 526.750 m * Maximum DEPTH, sediment/rock: 603.785 m
Event(s):
145-884B * Latitude: 51.450400 * Longitude: 168.337100 * Date/Time Start: 1992-08-20T18:00:00 * Date/Time End: 1992-08-24T11:00:00 * Elevation: -3836.0 m * Penetration: 853.9 m * Recovery: 791.76 m * Location: North Pacific Ocean * Campaign: Leg145 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 91 core; 853.9 m cored; 0 m drilled; 92.7 % recovery
Parameter(s):
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:
51462 data points
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