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Robertson, Alastair H F (1990): Geochemistry of Messinian sediments of the Sardinian margin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.746003, Supplement to: Robertson, AHF (1990): Geochemistry and mineralogy of iron- and trace-metal-rich Messinian and Pliocene mudstones cored on the Sardinian Margin: ODP Leg 107, Tyrrhenian Sea (central Mediterranean). In: Kastens, KA; Mascle, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 107, 245-253, https://doi.org/10.2973/odp.proc.sr.107.191.1990

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Abstract:
Brightly colored mudstones within Messinian (late Miocene) and lower Pliocene successions were cored beneath the upper and lower slopes of the Sardinian continental margin of the Tyrrhenian Sea (Central Mediterranean). A total of 24 samples were analyzed for major and trace elements and 20 samples were studied by whole-rock X-ray diffraction. The colorful sediments studied include millimeter-thick limonitic laminations within coarser-grained clastic sedimentary rocks (Site 652) and local ferruginous zones near the top of the Messinian succession elsewhere (Site 653). The basal Pliocene metalliferous sediments comprise up to several tens of meters of colorful, mainly red, yellow, and brown, calcareous clays at the base of nannofossil-rich Pliocene deep-sea sediment successions (Sites 652, 653, 654).
Relative to average shale, the Messinian mudstones cored on the de Marchi Seamount, the lowest rift fault block on the Sardinian margin (Site 656), are notably enriched in lead (Pb), zinc (Zn), and to a lesser extent, in copper (Cu) and nickel (Ni), and are associated with local clasts of sulfide ore. Messinian sediments higher on the Sardinian margin (Cornaglia Terrace, Site 653) are enriched in Zn and Pb. The basal Pliocene sediments, particularly at Site 653, are strongly enriched in iron (Fe), manganese (Mn), Pb and Zn, relative to the overlying Pliocene nannofossil oozes. This Fe and Mn enrichment is believed to have resulted from oxidation under hot arid conditions in the Messinian, followed by reworking of insoluble metal oxides during the Pliocene transgression that ensued. The Pb and Zn were apparently associated with sulfide ore, of either volcanic-hosted (?Mesozoic) Kuroko-type or (?Tertiary rift-related) sediment-hosted Mississippi-type. The Fe and Mn oxides and insoluble ore material were later reworked, leading to a marked Pb-Zn metal anomaly in ferruginous basal Pliocene sediments.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 40.290061 * Median Longitude: 11.811454 * South-bound Latitude: 39.356700 * West-bound Longitude: 10.696700 * North-bound Latitude: 40.579300 * East-bound Longitude: 13.900800
Date/Time Start: 1986-01-02T22:38:00 * Date/Time End: 1986-02-16T18:38:00
Event(s):
107-650A * Latitude: 39.356700 * Longitude: 13.900800 * Date/Time Start: 1986-01-02T22:38:00 * Date/Time End: 1986-01-09T14:30:00 * Elevation: -3516.3 m * Penetration: 633.8 m * Recovery: 311.13 m * Location: Tirreno Sea * Campaign: Leg107 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 69 cores; 633.8 m cored; 0 m drilled; 49.1 % recovery
107-652A * Latitude: 40.355000 * Longitude: 12.143200 * Date/Time Start: 1986-01-18T08:20:00 * Date/Time End: 1986-01-28T21:30:00 * Elevation: -3446.0 m * Penetration: 721.1 m * Recovery: 445.3 m * Location: Tirreno Sea * Campaign: Leg107 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 75 cores; 721.1 m cored; 0 m drilled; 61.8 % recovery
107-653A * Latitude: 40.264300 * Longitude: 11.449800 * Date/Time Start: 1986-01-29T01:58:00 * Date/Time End: 1986-01-31T15:38:00 * Elevation: -2817.0 m * Penetration: 240.7 m * Recovery: 211.29 m * Location: Tirreno Sea * Campaign: Leg107 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 26 cores; 240.7 m cored; 0 m drilled; 87.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Robertson, AHF (1990): (Table 6) Major- and trace-element composition of mainly metalliferous sediments from the Messinian of ODP Hole 107-652A. https://doi.org/10.1594/PANGAEA.746002
  2. Robertson, AHF (1990): (Table 2) Major- and trace-element composition of metalliferous sediments from the Messinian of ODP Hole 107-652A. https://doi.org/10.1594/PANGAEA.745998
  3. Robertson, AHF (1990): (Table 3) Major- and trace-element composition of metalliferous sediments from the Messinian of ODP Hole 107-653A. https://doi.org/10.1594/PANGAEA.745999
  4. Robertson, AHF (1990): (Table 4) Major- and trace-element composition of metalliferous sediments from the Messinian of ODP Hole 107-654A. https://doi.org/10.1594/PANGAEA.746000
  5. Robertson, AHF (1990): (Table 5) Major- and trace-element composition of metalliferous sediments from the Messinian of ODP Site 107-656. https://doi.org/10.1594/PANGAEA.746001
  6. Robertson, AHF (1990): (Table 1) Composition of samples from ODP Leg 107 holes. https://doi.org/10.1594/PANGAEA.746182