Sinninghe Damsté, Jaap S; Köster, Jürgen (1998): Organic carbon and total sulfur content and concentrations of selected molecular fossils for C/T black shales (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.721057, Supplement to: Sinninghe Damsté, JS; Köster, J (1998): A euxinic southern North Atlantic Ocean during the Cenomanian/Turonian oceanic anoxic event. Earth and Planetary Science Letters, 158(3-4), 165-173, https://doi.org/10.1016/S0012-821X(98)00052-1
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Abstract:
During mid-Cretaceous times large amounts of organic carbon (Corg) became sequestered in 'black shales', possibly due to 'oceanic anoxic events' characterized by the development of an extended oxygen minimum zone (OMZ). Here, we provide the first direct evidence for an open ocean OMZ in the Cenomanian/Turonian (C/T) southern North Atlantic and in fact show that the base of the photic zone was euxinic as revealed by molecular fossils from photosynthetic green sulfur bacteria in C/T black shales. This, together with evidence for bottom water anoxia and accumulation of redox-sensitive trace metals and hydrogen-rich organic matter, indicates a continuously euxinic water column. Concurrent with the high Corg accumulation rates, which are 15-150 times greater in the southern than in the northern North Atlantic, and the low biological productivity, this suggests that preservation controlled the accumulation of Corg in C/T black shales.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 28.251937 * Median Longitude: -41.084350 * South-bound Latitude: 9.453800 * West-bound Longitude: -70.028500 * North-bound Latitude: 48.910700 * East-bound Longitude: -12.181700
Date/Time Start: 1970-05-13T00:00:00 * Date/Time End: 1985-06-10T14:30:00
Minimum DEPTH, sediment/rock: 53.75 m * Maximum DEPTH, sediment/rock: 1134.15 m
Event(s):
11-105 * Latitude: 34.895300 * Longitude: -69.173300 * Date/Time: 1970-05-13T00:00:00 * Elevation: -5251.0 m * Penetration: 633 m * Recovery: 195.9 m * Location: North Atlantic/HILL * Campaign: Leg11 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 363 m cored; 0 m drilled; 54 % recovery
14-144 * Latitude: 9.453800 * Longitude: -54.342000 * Date/Time: 1970-11-23T00:00:00 * Elevation: -2957.0 m * Penetration: 327 m * Recovery: 28 m * Location: North Atlantic/CONT RISE * Campaign: Leg14 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 40 m cored; 0 m drilled; 70 % recovery
41-367 * Latitude: 12.486800 * Longitude: -20.047200 * Date/Time: 1975-03-03T00:00:00 * Elevation: -4748.0 m * Penetration: 1153 m * Recovery: 173.6 m * Location: North Atlantic/BASIN * Campaign: Leg41 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 342 m cored; 0 m drilled; 50.8 % recovery
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
183 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Depth sed [m] | 6 Sample label (DSDP/ODP/IODP sample designation) | 7 Area | 8 Paleoelevation [m a.s.l.] | 9 TOC [%] (Element analyser CS, LECO) | 10 TS [%] (total, Element analyser CS, LECO) | 11 Mol fossils [µg/g Corg] (IIa-c, Gas chromatography - M...) | 12 Mol fossils [µg/g Corg] (III, Gas chromatography - Mas...) | 13 Mol fossils [µg/g Corg] (IV, Gas chromatography - Mass...) | 14 Mol fossils [µg/g Corg] (V, Gas chromatography - Mass ...) | 15 Mol fossils [µg/g Corg] (VI, Gas chromatography - Mass...) | 16 Mol fossils [µg/g Corg] (sulfur-bound isorenieratane, ...) | 17 Mol fossils [µg/g Corg] (VII, Gas chromatography - Mas...) | 18 Mol fossils [µg/g Corg] (VIII, Gas chromatography - Ma...) | 19 Mol fossils [µg/g Corg] (sum III-VII, Gas chromatograp...) | 20 Mol fossils [µg/g Corg] (IX, Gas chromatography - Mass...) | 21 Mol fossils [µg/g Corg] (X, Gas chromatography - Mass ...) | 22 Hopane iso (Gas chromatography - Mass spe...) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11-105 | 34.8953 | -69.1733 | -5251 | 290.23 | 11-105-9-3,123-128 | Lower Continental Rise Hill | -4100 | 11.3 | 2.50 | 2 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 4 | 5 | 0.84 |
| 11-105 | 34.8953 | -69.1733 | -5251 | 291.24 | 11-105-9-4,74-80 | Lower Continental Rise Hill | -4100 | 7.7 | 4.50 | 4 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 10 | 0.88 | |
| 14-144 | 9.4538 | -54.3420 | -2957 | 214.60 | 14-144-04-2,0-30 | Demerara Rise | -3000 | 6.8 | 1.70 | 4 | 0.0 | 0.0 | 0.0 | 2 | 5 | 7 | 0 | 10 | 20 | 6 | 0.75 |
| 41-367 | 12.4868 | -20.0472 | -4748 | 638.38 | 41-367-18-2,88-91 | Cape Verde Basin | -3700 | 26.0 | 8.20 | 10 | 20.0 | 20.0 | 80.0 | 70 | 20 | 80 | 0 | 21 | 40 | 70 | 0.73 |
| 41-368 | 17.5072 | -21.3538 | -3366 | 952.65 | 41-368-60-3,15-20 | Cape Verde Basin | -3700 | 6.4 | 2.90 | 1 | 0.3 | 0.2 | 0.3 | 1 | 10 | 0 | 0 | 10 | 10 | 70 | 0.85 |
| 41-368 | 17.5072 | -21.3538 | -3366 | 979.20 | 41-368-63-3,120-125 | Cape Verde Basin | -3700 | 11.9 | 2.00 | 70 | 0.0 | 0.0 | 0.0 | 10 | 0 | 0 | 40 | 10 | 150 | 1400 | 0.00 |
| 51-417D | 25.1115 | -68.0468 | -5482 | 300.71 | 51B-417D-17-3,141-145 | Hatteras Abyssal Plain | -5500 | 5.8 | 0.66 | 2 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 | 0.87 |
| 80-551 | 48.9107 | -13.5015 | -3887 | 134.69 | 80-551-05-2,69-75 | Goban Spur | -1500 | 6.4 | 2.90 | 1 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 3 | 20 | 0.85 |
| 93-603B | 35.4952 | -70.0285 | -4633 | 1131.15 | 93B-603B-34-3,65-70 | Lower Continental Rise Hill | -4000 | 7.4 | 7.20 | 1 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 10 | 10 | |
| 93-603B | 35.4952 | -70.0285 | -4633 | 1134.15 | 93B-603B-34-5,65-70 | Lower Continental Rise Hill | -4000 | 3.5 | 1.60 | 1 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 20 | 10 | 0.84 | |
| 103-641A | 42.1550 | -12.1817 | -4646 | 53.75 | 103-641A-06X-CC | Galicia Margin | >-3000 | 6.7 | 2.70 | 0 | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | 0 | 4 | 10 | 0.75 |