Strontium (Sr) associated with silicate or carbonate fraction?

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Pierre Sabatier

Hi,

One way is to decarbonate your sample and analyse both the attack residue and the bulk sample.

Best regards

Pierre

Praveen Kumar Mishra

Pierre Sabatier: Unfortunately, we haven't done such analysis.

I already have the Sr data from bulk sediments. Now is it possible to calculate the Sr fraction in both carbonate and silicate fractions?

Aie...

Not so easy, Sr is mostly associated to Marine carbonate, thus in lake terrigenious carbonate and not in lake carbonate productivity. By this way Ca/Sr could be used as in lake carbonate productivity.

If you do not have terrigenious carbonate you can try estimate the Sr in silicate during a period oh high terrigenious inputs: flood deposit or late glacial period (all Sr = silicate end member). But if you have different terrigenious sources or terrigenious carbonate for me it is impossible with just these data....