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Ruhlin, Douglas E; Owen, Robert M (1986): Rare earth element composition and mass accumulation rates at DSDP Hole 92-598. PANGAEA,, Supplement to: Ruhlin, DE; Owen, RM (1986): Factors influencing the rare earth element composition of hydrothermal precipitates, East Pacific Rise. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 383-389,

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Site 598 sediments were analyzed to determine the factors controlling the rare earth element (REE) geochemistry of the hydrothermal component. Site 598 provides an ideal sample suite for this purpose. Samples are lithologically "simple," primarily consisting of a hydrothermal component and biogenous carbonates. Also, the composition of the hydrothermal component appears unchanged through time or space, and the site appears to have undergone minimal diagenetic alteration. The shale-normalized REE patterns are similar to the pattern of seawater, varying only in absolute REE content. The REE content increases with distance from the paleorise crest and exhibits a pronounced increase in sediments deposited below the paleolysocline. Results presented are consistent with the following model: the source mechanism for the REE content of hydrothermal sediments is scavenging by Fe oxyhydroxides from seawater. With prolonged exposure to seawater resulting from transport far from the injection point and/or long residence at the seawatersediment interface, the absolute REE content of hydrothermal sediments increases and becomes more like seawater.
Latitude: -19.004700 * Longitude: -124.676800
Date/Time Start: 1983-03-17T00:00:00 * Date/Time End: 1983-03-17T00:00:00
92-598 * Latitude: -19.004700 * Longitude: -124.676800 * Date/Time: 1983-03-17T00:00:00 * Elevation: -3699.0 m * Penetration: 52.4 m * Recovery: 41.2 m * Location: South Pacific * Campaign: Leg92 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 52.4 m cored; 0 m drilled; 78.7 % recovery
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  1. Ruhlin, DE; Owen, RM (1986): (Table 2) Rare Earth element concentratin at DSDP Hole 92-598.
  2. Ruhlin, DE; Owen, RM (1986): (Table 3) Mass accumulation rates at DSDP Hole 92-598.