From spectrophotometric and chemical evolutionary modelling of interac
ting and merging galaxies we predict abundances of burst stars and of
globular clusters (GCs) that may be formed in strong bursts. Observati
ons of young GCs in merger remnants confirm the predicted metallicitie
s. We investigate their formation as a result of a strong star burst w
ith a high star formation efficiency over a large volume of the merger
remnant. The evolution of GCs of various metallicities in terms of br
oad band colours and stellar metal indices are modeled. Comparing our
results to the V-I, Mgb and Fe5270 observations of GCs in NGC 7252 lar
gely removes the age - metallicity degeneracy and allows for accurate
age dating as well as for estimating the effects of self - enrichment.