Relative ages of visibly crystalline calcite in late Paleozoic limestones

Many geologists who have examined limestones under the microscope are aware that coarsely crystalline or visibly crystalline calcite poses problems. For example, several generations of calcite formed by different processes may be present in a single specimen. It is the purpose of this paper to consider the classification, origin, and age relations of different types of calcite that have been observed in late Paleozoic limestones. Improved understanding of the different types of visibly crystalline calcite should help in interpreting conditions of sedimentation and diagenesis of limestone.