Usui, Akira; Ito, Takashi (1994): Fossil manganese deposits buried within DSDP/ODP cores, Legs 1-126 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.759264, Supplement to: Usui, A; Ito, T (1994): Fossil manganese deposits buried within DSDP/ODP cores, Legs 1-126. Marine Geology, 119(1-2), 111-136, https://doi.org/10.1016/0025-3227(94)90144-9
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Abstract:
Probable in-situ manganese deposits larger than 1 cm in diameter buried in ODP/DSDP cores were selected for study after examining previous descriptions of the manganese deposits in site reports and the ODP data base. Most of the selected samples from 11 cores occur at or just above sedimentary hiatuses or in slowly deposited sediments and are overlain by rapidly deposited sediments of biogenic, terrigenous or volcanogenic origin. The changes in sedimentation recorded in the lithostratigraphic sections around these deposits are closely related to changes in tectonic evolution, deep water circulation or biological productivity at the sites.
The similarity in composition and structure of the buried deposits to those of the modern manganese nodules and crusts with no evidence of post-depositional change suggest that buried manganese deposits may be used as indicators of past sedimentary conditions during which they formed. Their major components are hydrogenetic and earlydiagenetic manganese minerals as well as detrital minerals. The characteristics of these manganese deposits suggests that similar processes of deposition have taken place since the Paleogene or older.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 2.089397 * Median Longitude: -85.451888 * South-bound Latitude: -51.542000 * West-bound Longitude: 115.541300 * North-bound Latitude: 56.290000 * East-bound Longitude: -19.386100
Date/Time Start: 1968-09-04T00:00:00 * Date/Time End: 1988-07-14T13:00:00
Event(s):
1-5 * Latitude: 24.726500 * Longitude: -73.641000 * Date/Time: 1968-09-04T00:00:00 * Elevation: -5354.0 m * Penetration: 80.2 m * Recovery: 6.4 m * Location: North Atlantic/BASIN * Campaign: Leg1 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 27.4 m cored; 0 m drilled; 23.4 % recovery
5-37 * Latitude: 40.979000 * Longitude: -140.718500 * Date/Time: 1969-05-10T00:00:00 * Elevation: -4682.0 m * Penetration: 30 m * Recovery: 30.6 m * Location: North Pacific/HILL * Campaign: Leg5 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 30 m cored; 0 m drilled; 102 % recovery
15-150 * Latitude: 14.511500 * Longitude: -69.355800 * Date/Time: 1971-01-10T00:00:00 * Elevation: -4545.0 m * Penetration: 180 m * Recovery: 32.4 m * Location: Caribbean Sea/BASIN * Campaign: Leg15 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 90 m cored; 0 m drilled; 36 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Usui, A; Ito, T (1994): (Table 3) Chemical and mineralogical composition of the deposits. https://doi.org/10.1594/PANGAEA.759387
- Usui, A; Ito, T (1994): (Table 2) Description of analyzed manganese deposits buried within sediments. https://doi.org/10.1594/PANGAEA.759385