Distribution of Strontium in Dedolomites from the French Jura

Abstract

STRONTIUM is a major trace element in limestones and dolomites, in which it appears to be housed in the lattices of the carbonate minerals. With relatively few exceptions, strontium ranges from 10,000 to 1,000 p.p.m. in Recent marine carbonate sediments, from 1,000 to 100 p.p.m. in limestones and from 200 to 60 p.p.m. in dolomites. Evidently the strontium content of sedimentary carbonate rocks generally decreases with diagenetic evolution. The diagenetic series does not end with dolomites, however, but continues into the dedolomites—rocks in which dolomite has been replaced by calcite—but there is so far no information about the distribution of strontium in dedolomites.