Other
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..84..393k&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 84, no. 4, Aug. 1987, p. 393-405.
Other
11
Flow Distribution, Isotope Effect, Magma, Oceanography, Seamounts, Bathymeters, Convective Flow, Mixing, Trace Elements, Turbulent Flow
Scientific paper
The effects of mixing processes on the isotopic variability of midocean ridge basalts are studied. The processes considered are porous flow dispersion and convective mixing in magma chambers. Porous flow dispersion is capable of mixing magmas over distances of only a few tens of meters. Convective mixing, on the other hand, is found to produce continuous magma chambers, where mixing is limited by convective processes, and for discontinuous chambers, where mixing is limited by chamber size. Preliminary comparison of the calculations with observations along the midocean ridges shows that the calculations are consistent with the existence of a correlation between bathymetry and isotopic ratio at long, but not at short, wavelengths. They are also capable of explaining a decrease in isotopic variability with increasing spreading rate.
Kenyon Patricia M.
Turcotte Donald L.
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