engleski

The influence of acid rains on the lithothamnian limestone on the gallery of the Mary's Ascension cathedral, Zagreb, Croatia

Urban, environmental pollution, caused by acid rains and damages of stone elements on Cathedral of Zagreb are described. On the surfaces of limestone elements that are in the "shade", the black scabs have developed. The outer crusts, and inner powdery matter of the black scabs have been investigated by microscopy, and analyzed by means of x-ray, thermal and chemical analyses. They contain gypsum, calcite, soot, and sporadic fly ash.

Damages of limestone; Cathedral of Zagreb; Pollution; Acid rain

1-09-286