CHARAS PROJECT, THE SAVEVENICE AREA

Marine engines has not catalytic mufflers as cars does;

The sulphur emissions are, obviously, much higher than for cars;

Result of this is the air is full of sulphur dioxide (sulphurous anhydride);

Definition: CALCITE - it is crystalline calcium carbonate (CaCO3);

Venice is built mainly with "Istria's stones", very rich of CALCITE veins;

Without these veins stones lacks coesion, becoming a sort of "rock mosaic";

So without these veins, stones will FALL or become really UNSTALBE (physically, i mean);

A formula:

The forumla translated:

The carbonic anhydride is a gas, so it will "fly away";

So: marine engines and their sulphur emissions transforms CALCITE into CHALK;

Umidity (water in the air) and rain dissolves the chalk;

Istria's stone becomes "rock mosaics", because the sulphur destroy it's CALCITE veins;

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