Other
Scientific paper
Aug 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970gecoa..34..893r&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 34, Issue 8, pp.893-907
Other
4
Scientific paper
Clay minerals from the Rio Ameca, Mexico, were vised for a study of the chemical interactions between clay minerals and sea water. Montmorillonite and kaolinite/halloysite are the common clay minerals with some amorphous material and illite also present. Clay minerals from the shallow portions of the bay near the river mouth seem to be only detrital material with no visible structural diagenesis. This clay and clay filtered from the river water were analyzed for major cations. The number of equivalents of cations is the same in river clay as in marine clay. This disproves any rapid reaction between the clay and sea water to remove cation alkalinity. The river clays react with sea water only to the extent of their cation exchange capacity. The river adds cation alkalinity to the ocean but adjusts the cation ratios by exchanging most of the Ca from the clay for K, Mg, and Na in sea water. Rio Ameca clay removes all of the river-carried K by cation exchange but only about one fourth of the Na and Mg at flood time, when the river clay removes the greatest percentage of these three ions. When the results of this study of clay-cation behavior are applied to a world average river, it is calculated that between 11 per cent and 47 per cent of the K delivered by the river is removed within a few weeks. This process is not important for Mg and probably not for Na. Some of these ions may be removed by amorphous material but all changes are explainable without any reaction with amorphous material. River clay loses cation exchange capacity after exposure to sea water but there is no evidence to indicate which clay mineral is changing. The behavior of the major cations other than Mg must depend upon their concentration in sea water and upon the properties of the clay minerals. The Mg content of the clay also depends upon pH. The Mg content rises rapidly with the pH, or with a limited amount of water lowers the pH of the solution, probably as a result of magnesium hydroxide absorption. This may be an important mechanism in controlling the pH of the oceans.
No associations
LandOfFree
Geochemistry and halmyrolysis of clay minerals, Rio Ameca, Mexico does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Geochemistry and halmyrolysis of clay minerals, Rio Ameca, Mexico, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geochemistry and halmyrolysis of clay minerals, Rio Ameca, Mexico will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1851324