10 October 2018 4 9K Report

Looking at my Messinian sea sediments with the SEM, I found many foraminifers completely dissolved (the calcite wall was replaced by other mineral, but the shape of the original wall was intact). This dissolution doesn't affect the coccolith present at the same level, that were with no clear sign of dissolution.

In the literature this is widely reported ( Chiu and Broecker 2008), but I didn't found any explanation for this. Is a matter of a different surface area to volume ratio? Is a matter of incorporation of Mg in the wall text? Someone has some explanation?

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