Chen, Robert F; Bada, Jeffrey L (1994): Fluorescence of dissolved organic matter un marine sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.756944, Supplement to: Chen, RF; Bada, JL (1994): The fluorescence of dissolved organic matter in porewaters of marine sediments. Marine Chemistry, 45(1-2), 31-42, https://doi.org/10.1016/0304-4203(94)90089-2
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Abstract:
The fluorescence of porewaters from marine sediment cores from six different areas was measured. In most cases, fluorescence was affected primarily by the diagenesis of organic carbon first through sulfate reduction and subsequently by methane generation. Typically, fluorescence, dissolved organic carbon (DOC), absorbance, alkalinity, and ammonium ion concentrations correlate quite well, increasing in the upper sections of anoxic sediments and co-varying in deeper sections of these cores. The good correlation of DOC with fluorescence in the three cores in which DOC was measured indicates that fluorescence can be used to make a first order estimate of DOC concentration in anoxic porewaters. Data are consistent with a model in which labile organic matter in the sediments is broken down by sulfur reducing bacteria to low molecular weight monomers. These monomers are either remineralized to CO2 or polymerize to form dissolved, fluorescent, high molecular weight molecules. The few exceptions to this model involve hydrothermally generated hydrocarbons that are formed in situ in the Guaymas Basin or are horizontally advected along the decollement in the Nankai Trench.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 23.618741 * Median Longitude: 174.212572 * South-bound Latitude: -29.070700 * West-bound Longitude: 0.367929 * North-bound Latitude: 34.230000 * East-bound Longitude: -111.500000
Date/Time Start: 1978-12-24T00:00:00 * Date/Time End: 1990-05-02T14:40:00
Event(s):
64-478 * Latitude: 27.096800 * Longitude: -111.507500 * Date/Time: 1978-12-24T00:00:00 * Elevation: -1889.0 m * Penetration: 464 m * Recovery: 297.6 m * Location: North Pacific/Gulf of California/CHANNEL * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 49 cores; 427 m cored; 24 m drilled; 69.7 % recovery
64-479 * Latitude: 27.846000 * Longitude: -111.624800 * Date/Time: 1978-12-29T00:00:00 * Elevation: -747.0 m * Penetration: 440 m * Recovery: 262.7 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 373 m cored; 47.5 m drilled; 70.4 % recovery
67-496 * Latitude: 13.063700 * Longitude: -90.795200 * Date/Time: 1979-05-30T00:00:00 * Elevation: -2049.0 m * Penetration: 378 m * Recovery: 191.9 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 349.5 m cored; 19 m drilled; 54.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Chen, RF; Bada, JL (1994): (Appendix 1) Fluorescence of dissolved organic matter in marine sediments of Santa Barbara Basin and Guaymas Basin. https://doi.org/10.1594/PANGAEA.756941
- Chen, RF; Bada, JL (1994): (Appendix 1) Fluorescence of dissolved organic matter in marine sediments of several ODP and DSDP holes. https://doi.org/10.1594/PANGAEA.756943