Khim, Boo-Keun; Kim, Sunghan; Asahi, Hirofumi (2024): Opal contents at IODP U1417 (Gulf of Alaska) during Late Miocne to Early Pleistocene [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.972120
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Published: 2024-09-03 • DOI registered: 2024-10-02
Abstract:
International Ocean Discovery Program Site U1417 in the Surveyor (Gulf of Alaska) preserves the hemi-pelagic sediments influenced by the glacial and fluvi-al depositional from the Cordilleran Ice Sheet at the Chugach–St. Elias Mountains and Coast Ranges. A total of 441 samples covering the late Miocene to early Pleistocene were used to measure the biogenic opal content to trace the degree of diatom productivity in the surface water. In general, the biogenic opal content, fluctuating from less than 1% to a maximum of 48.6%, confirms the division of lithostratigraphic units and subunits: diatom-bearing clay-rich intervals vs clast-rich terrigenous intervals. The dataset presents Biogenic opal contents at U1417 from the Late Miocene to the Late Pleistocene, along with lithological units defined in the proceeding of IODP Expeition 341 (Jaeger et al., 2014). Biogenic opal contents at U1417 from the Late Miocene to the Late Pleistocene, along with lithological units defined in the proceeding of IODP Expeition 341 (Jaeger et al., 2014).
Supplement to:
Khim, Boo-Keun; Kim, Sunghan; Asahi, Hirofumi (2026): Biogenic Opal Deposition in the Surveyor Fan (IODP Site U1417) in the Gulf of Alaska (North Pacific) During the Late Miocene to Early Pleistocene. Geochemistry, Geophysics, Geosystems, 27(2), e2025GC012173, https://doi.org/10.1029/2025GC012173
References:
Jaeger, John M; Gulick, Sean P S; LeVay, Leah J; Asahi, H; Bahlburg, H; Belanger, Christina L; Berbel, Glaucia B Benedetti; Childress, Laurel B; Cowan, Ellen A; Drab, Laureen; Forwick, Matthias; Fukumura, A; Ge, Shemin; Gupta, S M; Kioka, Arata; Konno, S; März, C E; Matsuzaki, Kenji M; McClymont, Erin L; Mix, Alan C; Moy, Christopher M; Müller, J; Nakamura, A; Ojima, Takanori; Ridgway, K D; Rodrigues Ribeiro, F; Romero, Oscar E; Slagle, Angela L; Stoner, Joseph S; St-Onge, Guillaume; Suto, Itsuki; Walczak, Maureen H; Worthington, Lindsay L; IODP Expedition 341 Scientists (2014): Site U1417. In: Proceedings of the IODP, Integrated Ocean Drilling Program, https://doi.org/10.2204/iodp.proc.341.103.2014
Project(s):
Coverage:
Latitude: 56.959830 * Longitude: -147.109975
Date/Time Start: 2013-06-13T00:00:00 * Date/Time End: 2013-06-17T00:00:00
Minimum DEPTH, sediment/rock: 276.685 m * Maximum DEPTH, sediment/rock: 707.480 m
Event(s):
341-U1417D * Latitude: 56.959830 * Longitude: -147.109960 * Date/Time: 2013-06-13T00:00:00 * Elevation: -4187.0 m * Location: Southern Alaska Margin * Campaign: Exp341 (Southern Alaska Margin: Tectonics, Climate and Sedimentation) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 64 cores; 466.5 m cored; 65.3 % recoverd, 470.3 m penetrated
341-U1417E * Latitude: 56.959830 * Longitude: -147.109990 * Date/Time: 2013-06-17T00:00:00 * Elevation: -4188.6 m * Location: Southern Alaska Margin * Campaign: Exp341 (Southern Alaska Margin: Tectonics, Climate and Sedimentation) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 348.7 m cored; 42.1 % recoverd, 709.5 m penetrated
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Asahi, Hirofumi | |||
| 2 | Sample code/label | Sample label | Asahi, Hirofumi | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Asahi, Hirofumi | Geocode – CSF-A | |
| 4 | Depth, composite | Depth comp | mcd | Asahi, Hirofumi | CCSF | |
| 5 | Opal, biogenic silica | bSiO2 | % | Asahi, Hirofumi | ||
| 6 | Lithologic unit/sequence | Unit | Asahi, Hirofumi |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1764 data points