Giosan, Liviu; Flood, Roger D; Aller, Robert C (2002): (Table 1) Color, Fe-C-S chemistry and carbonate content from ODP Sites 172-1062 and 172-1063 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.764415, Supplement to: Giosan, L et al. (2002): Paleoceanographic significance of sediment color on western North Atlantic drifts: I. Origin of color. Marine Geology, 189(1-2), 25-41, https://doi.org/10.1016/S0025-3227(02)00321-3
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Abstract:
Reflectance spectra collected during ODP Leg 172 were used in concert with solid phase iron chemistry, carbonate content, and organic carbon content measurements to evaluate the agents responsible for setting the color in sediments. Factor analysis has proved a valuable and rapid technique to detect the local and regional primary factors that influence sediment color. On the western North Atlantic drifts, sediment color is the result of primary mineralogy as well as diagenetic changes. Sediment lightness is controlled by the carbonate content while the hue is primarily due to the presence of hematite and Fe2+/Fe3+ changes in clay minerals. Hematite, most likely derived from the Permo-Carboniferous red beds of the Canadian Maritimes, is differentially preserved at various sites due to differences in reductive diagenesis and dilution by other sedimentary components. Various intensities for diagenesis result from changes in organic carbon content, sedimentation rates, and H2S production via anaerobic methane oxidation. Iron monosulfides occur extensively at all high sedimentation sites especially in glacial periods suggesting increased high terrigenous flux and/or increased reactive iron flux in glacials.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 30.059710 * Median Longitude: -68.813143 * South-bound Latitude: 28.246080 * West-bound Longitude: -74.417580 * North-bound Latitude: 33.686720 * East-bound Longitude: -57.614940
Date/Time Start: 1997-03-17T22:35:00 * Date/Time End: 1997-03-28T23:30:00
Minimum Elevation: -4774.0 m * Maximum Elevation: -4583.5 m
Event(s):
172-1062D * Latitude: 28.246330 * Longitude: -74.406910 * Date/Time Start: 1997-03-17T22:35:00 * Date/Time End: 1997-03-18T10:10:00 * Elevation: -4760.2 m * Penetration: 81.8 m * Recovery: 82.66 m * Location: Blake-Bahama Outer Ridge, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 81.8 m cored; 0 m drilled; 101.1 % recovery
172-1062E * Latitude: 28.246080 * Longitude: -74.417580 * Date/Time: 1997-03-18T10:10:00 * Elevation: -4774.0 m * Penetration: 208.8 m * Recovery: 203.72 m * Location: Blake-Bahama Outer Ridge, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 208.8 m cored; 0 m drilled; 97.6 % recovery
172-1063A * Latitude: 33.686720 * Longitude: -57.614940 * Date/Time Start: 1997-03-25T01:19:00 * Date/Time End: 1997-03-28T23:30:00 * Elevation: -4583.5 m * Penetration: 418.4 m * Recovery: 400.4 m * Location: Blake-Bahama Outer Ridge, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 418.4 m cored; 0 m drilled; 95.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Giosan, Liviu | DSDP/ODP/IODP sample designation | ||
| 3 | Color, L*, lightness | L* | Giosan, Liviu | Spectrophotometer Perkin-Elmer Lambda 6 | ||
| 4 | Color, C* | C* | Giosan, Liviu | Spectrophotometer Perkin-Elmer Lambda 6 | ||
| 5 | Color, Hue | Hue | °CIE | Giosan, Liviu | ||
| 6 | Factor 1 | PC1 | Giosan, Liviu | |||
| 7 | Factor 2 | PC2 | Giosan, Liviu | |||
| 8 | Factor 3 | PC3 | Giosan, Liviu | |||
| 9 | Carbonates | Carb | % | Giosan, Liviu | Coulometry | |
| 10 | Carbon, organic, total | TOC | % | Giosan, Liviu | Element analyser CHN, Carlo Erba | |
| 11 | Sulfur, total | TS | % | Giosan, Liviu | Element analyser CHN, Carlo Erba | |
| 12 | Iron | Fe | % | Giosan, Liviu | FeH = hydroxylamine-leached iron pool | |
| 13 | Iron | Fe | % | Giosan, Liviu | Dithionite extraction (Lord, 1980, PhD Thesis Univ Delaware) | FeD = dithionite-leached iron pool |
| 14 | Iron | Fe | % | Giosan, Liviu | Iron, colorimetric, Ferrozine (Stookey, 1970) | Fe2+HR |
| 15 | Iron | Fe | % | Giosan, Liviu | Iron, colorimetric, Ferrozine (Stookey, 1970) | FeHR |
| 16 | Iron | Fe | % | Giosan, Liviu | Iron, colorimetric, Ferrozine (Stookey, 1970) | total iron content |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
343 data points