Piper, David Z; Rude, P D; Monteith, S (1987): Analysis of sediments at Domes Site A, Pacific Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.881020, Supplement to: Piper, DZ et al. (1987): The chemistry and mineralogy of haloed burrows in pelagic sediment at DOMES Site A: The equatorial North Pacific. Marine Geology, 74(1-2), 41-55, https://doi.org/10.1016/0025-3227(87)90004-1
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Abstract:
The chemical and mineralogical composition of burrowed sediment, recovered in 66 box cores at latitude 9°25'N and longitude 151°15'W in the equatorial Pacific, demonstrates the important role of infauna in determining the geochemistry of pelagic sediment. Haloed burrows, approximately 3 cm across, were present in many of the cores. Within early Tertiary sediment that was covered by less than 5 cm of surface Quaternary sediment in several cores, the burrows in cross-section consist of three units: (1) a dark yellowish-brown central zone of Quaternary sediment surrounded, by (2) a pale yellowish-orange zone (the halo) of Tertiary sediment, which is surrounded by (3) a metal-oxide precipitate; the enclosing Tertiary sediment is dusky brown. Several elements - Mn, Ni, Cu, Co, Zn, Sb and Ce - have been leached from the light-colored halo, whereas Cr, Cs, Hf, Rb, Sc, Ta, Th, U, the rare earth elements exclusive of Ce, and the major oxides have not been leached. The metal-oxide zone, 1-5 mm thick, contains as much as 16% MnO2, as the mineral todorokite. The composition of the todorokite, exclusive of the admixed Tertiary sediment, resembles the composition of the metal deficit of the halo and also the composition of surface ferromanganese nodules that have been interpreted as having a predominantly diagenetic origin. Thus bioturbation contributes not only to the redistribution of metals within pelagic sediment, but also to the accretion of ferromanganese nodules on the sea floor.
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Core DJ 62 sketch showing burrows with a burrow wall (leached zone or halo), burrow fill, and the todorokite precipitate.
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Median Latitude: 9.400561 * Median Longitude: -151.477471 * South-bound Latitude: 9.321667 * West-bound Longitude: -151.559310 * North-bound Latitude: 9.463374 * East-bound Longitude: -151.293300
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
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Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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Datasets listed in this publication series
- Piper, DZ; Rude, PD; Monteith, S (1987): (Table 1, page 44) Bulk composition of manganese enriched burrows in sediments from DOMES Sites A, Pacific Ocean. https://doi.org/10.1594/PANGAEA.881017
- Piper, DZ; Rude, PD; Monteith, S (1987): (Table 4, page 51) Concentration of elements soluble in hydroxylamine hydrochloride-acetic acid for manganese enriched burrows in sediments from DOMES Sites A, Pacific Ocean. https://doi.org/10.1594/PANGAEA.881018