Interstitial water chemsitry at DSDP Leg 60 Holes
Cobertura |
MEDIAN LATITUDE: 17.862310 * MEDIAN LONGITUDE: 144.928017 * SOUTH-BOUND LATITUDE: 17.667000 * WEST-BOUND LONGITUDE: 143.682500 * NORTH-BOUND LATITUDE: 18.013000 * EAST-BOUND LONGITUDE: 148.629200 * DATE/TIME START: 1978-03-23T00:00:00 * DATE/TIME END: 1978-05-09T00:00:00 |
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Data(s) |
10/10/1982
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Resumo |
Interstitial water data obtained during Leg 60 show complex gradients at Site 453 in a sediment pond on the west side of the Mariana Trough. Concentrations of Ca, Mg, Sr, as well as of K and Li, suggest that slightly altered sea water penetrates below the sediments, most likely through brecciated igneous and metamorphic rocks, mainly gabbros, lying at the base of the pond. Interstitial water concentration gradients suggest that reactions involving igneous matter lead to increases in calcium and strontium in the pore fluids and to decreases in magnesium. Upward advection of water through the sediments does not appear to occur, so that the advected sea water most likely penetrates deeper into the breccias, perhaps leading to further hydrothermal activity elsewhere in this area. Interstitial water gradients at Sites 458 (conservative) and 459 suggest that reactions in the sediments and underlying basalts are responsible for increases in dissolved calcium and decreases in magnesium and potassium. |
Formato |
application/zip, 2 datasets |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.820225 doi:10.1594/PANGAEA.820225 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Gieskes, Joris M; Johnson, Jeff (1982): Interstitial water studies, Deep Sea Drilling Project Leg 60. In: Hussong, DM; Uyeda, S; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 60, 749-754, doi:10.2973/dsdp.proc.60.142.1982 |
Palavras-Chave | #[SO4]2-; 60-452; 60-452A; 60-453; 60-454; 60-454A; 60-455; 60-456; 60-456A; 60-458; 60-459; 60-459B; 60-460; 60-460A; 60-461; Alkalinity, total; Ammonia; AT; Ca; Calcium; Chlorinity; cl; Comment; Deep Sea Drilling Project; Depth; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Event; Glomar Challenger; K; Label; Leg60; Li; Lithium; Magnesium; Manganese; Mg; Mn; NH3; NH4 data <0.08 are not considered significant; North Pacific/BASIN; North Pacific/SEDIMENT POND; North Pacific/TRENCH; ODP sample designation; pH; Potassium; Sal; Salinity; Sample code/label; see reference(s); Shipboard; Shipboard; unit is per mil; Si; Silicon; Sr; Strontium; Sulphate |
Tipo |
Dataset |