The downhole variation of the rock-magnetic properties of DSDP Leg 73 Holes
| Cobertura |
MEDIAN LATITUDE: -27.571743 * MEDIAN LONGITUDE: -4.988637 * SOUTH-BOUND LATITUDE: -29.484200 * WEST-BOUND LONGITUDE: -11.666200 * NORTH-BOUND LATITUDE: -26.073800 * EAST-BOUND LONGITUDE: 3.512300 * DATE/TIME START: 1980-04-22T00:00:00 * DATE/TIME END: 1980-05-21T00:00:00 |
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| Data(s) |
03/05/1984
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| Resumo |
The magnetic stability and mean intensity of the natural remanent magnetization (NRM) of Leg 73 sediments (Holes 519 to 523) decreases with the age of the sediment. We demonstrate that these variations are linked with physical and chemical changes in the magnetic grains themselves. Alteration of the magnetic component occurs most rapidly shortly after deposition. A significant magnetic alteration over the topmost few meters of the sediments is thought to be the result of oxidation. The modification of the NRM characteristics through the partial dissolution of the carbonate is largely accounted for by the effects of concentraion of the magnetic minerals. We apply the techniques of rock-magnetism and X-ray fluorescence analysis to clarify the physical and chemical mechanisms that affect the magnetic character of the sediment. |
| Formato |
application/zip, 4 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.811201 doi:10.1594/PANGAEA.811201 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Tucker, Peter; Tauxe, Lisa (1984): The downhole variation of the rock-magnetic properties of Leg 73 sediments. In: Hsü, KJ; LaBrecque, JL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 73, 673-685, doi:10.2973/dsdp.proc.73.129.1984 |
| Palavras-Chave | #73-519; 73-521; 73-522; 73-523; 73-524; chi; Coercivity; Coercivity of remanence; Color desc; Color description; Comment; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Event; Glomar Challenger; Grain size descr; Grain size description; Hc; Hcr; High-field; Hysteresis, saturation magnetization; initial; Inten (NRM) /mass; Label; Leg73; MDF; Median destructive field; Ms; Natural remanent magnetization; NRM; NRM, Intensity per unit mass; ODP sample designation; Remanent magnetization, intensity, per unit mass; Rem magn; Sample code/label; Saturation isothermal remanent magnetization; SIRM; South Atlantic/CANYON; South Atlantic/HILL; South Atlantic/PLATEAU; South Atlantic/RIDGE; Stable; Susceptibility, specific; Unit is %; Viscous; Viscous remanent magnetisation/Natural remanent magnetization ratio; VRM/NRM |
| Tipo |
Dataset |
