The Gordon Limestone is characterized by low Mn, moderate Na and high Sr concentrations, similar to those in modern tropical aragonitic carbonates. Mn reflects predominantly original aragonite mineralogy, oxidizing peritidal conditions and the influence of meteoric water. Sr and Na concentrations generally decrease with increasing Mn. Na concentrations are similar in limestones and dolomitic limestones because of the lack of appreciable freshwater influence during dolomitization. Sr concentrations decrease with increasing Mg concentrations, indicating dolomitization in predominantly marine waters. Similar amounts of Mn in both limestones and dolomitic limestones indicate prevalence of oxidizing conditions during their formation.