Ti in limestones has implication for the detrital input into chemical sediments and for the weathering of this limestones. Further evidence would be speculative based on the scarcity of the information presented on the environment See: DILL, H.G. (2007) Grain morphology of heavy minerals from marine and continental placer deposits, with special reference to Fe -Ti oxides.- Sedimentary Geology DILL, H.G. and KLOSA, D. (2011) Heavy-mineral-based provenance analysis of Mesozoic continental-marine sediments at the western edge of the Bohemian Massif, SE Germany:With special reference to Fe-Ti minerals and the crystal morphology of heavy minerals. - International Journal of Earth Sciences, 100: 1497-1513.

S may help to describe the redox conditions depending on the valence state of sulphur is present in the limestone (sulphide, e.g. pyrite, sulphate, e.g. gypsum or anhydrite)

H.G.Dill