de.pangaea.dataset753777 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-05-01T03:47:33Z https://doi.pangaea.de/10.1594/PANGAEA.753777 1990-01-01 publication https://doi.org/10.1594/PANGAEA.753777 Repeta, Daniel J author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital Supplement to: Repeta, Daniel J (1990): Carotenoid diagenesis in Pleistocene to Miocene sediments from the Peru Margin. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 567-572, https://doi.org/10.2973/odp.proc.sr.112.157.1990 The quantitative distribution of carotenoids in sediments of Pleistocene to Miocene age from the Peru upwelling area is reported. Major pigments include beta-carotene, diatoxanthin, caroteno-3,3'-diols from phytoplankton, astaxanthin and canthaxanthin from crustaceans, and spheroidenone from bacteria. beta-carotene epoxides are major consituents, representing transformation products in the degradation of beta-carotene to low molecular weight compounds. The absolute abundance of carotenoids reflects bottom-water oxicity at the time of deposition; highest concentrations of carotenoids were observed in laminated muds deposited within the oxygen-minimum zone, with reduced or negligible concentrations of pigments observed in bioturbated sequences deposited during periods of well-oxygenated bottom water. beta-carotene, the most abundant pigment in recently deposited sediments, slowly degrades through a sequence of transformation reactions initiated by epoxidation. The 4,4' dioxo-carotenoids, which are unable to form 5,6-epoxides, have been preferentially preserved in these sediments. completed Repeta, Daniel J principalInvestigator ODP Ocean Drilling Program theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-3.0: Creative Commons Attribution 3.0 Unported textTable und geoscientificInformation -79.95582999999999 -77.95767000000001 -11.0635 -8.9915 1986-11-01T07:00:00 1986-11-22T08:45:00 Event label thematicClassification Sample code/label thematicClassification DSDP/ODP/IODP sample designation Sample mass physicalMeasurement dry weight g g beta-Carotene, beta,beta-Carotene, per unit sediment mass physicalMeasurement µg/g µg/g Astaxanthin, per unit sediment mass physicalMeasurement µg/g µg/g Canthaxanthin, per unit sediment mass physicalMeasurement # = traces µg/g µg/g Diatoxanthin, per unit sediment mass physicalMeasurement µg/g µg/g text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.753777?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: 112-679C * LATITUDE: -11.063500 * LONGITUDE: -78.272170 * DATE/TIME START: 1986-11-01T07:00:00 * DATE/TIME END: 1986-11-01T12:45:00 * ELEVATION: -458.0 m * PENETRATION: 75.5 m * RECOVERY: 69.78 m * LOCATION: South Pacific Ocean * CAMPAIGN: Leg112 * BASIS: Joides Resolution * METHOD/DEVICE: Drilling/drill rig 8 cores; 75.5 m cored; 0 m drilled; 92.4 % recovery 1986-11-01T07:00:00 EVENT LABEL: 112-681C * LATITUDE: -10.976660 * LONGITUDE: -77.957670 * DATE/TIME START: 1986-11-08T13:15:00 * DATE/TIME END: 1986-11-08T18:00:00 * ELEVATION: -162.0 m * PENETRATION: 91.4 m * RECOVERY: 86.24 m * LOCATION: South Pacific Ocean * CAMPAIGN: Leg112 * BASIS: Joides Resolution * METHOD/DEVICE: Drilling/drill rig 10 cores; 91.4 m cored; 0 m drilled; 94.4 % recovery 1986-11-08T13:15:00 EVENT LABEL: 112-684C * LATITUDE: -8.991500 * LONGITUDE: -79.955830 * DATE/TIME START: 1986-11-21T20:30:00 * DATE/TIME END: 1986-11-22T08:45:00 * ELEVATION: -438.0 m * PENETRATION: 115 m * RECOVERY: 56.23 m * LOCATION: South Pacific Ocean * CAMPAIGN: Leg112 * BASIS: Joides Resolution * METHOD/DEVICE: Drilling/drill rig 13 cores; 115 m cored; 0 m drilled; 48.9 % recovery 1986-11-21T20:30:00