The study of the stratigraphy of the Taconic sequence in• western New England and eastern New York is hampered by problems of nomenclature.During the course of years, geologists have proposed many stratigraphic names for various rock units in different parts of the Taconic region.Although most of these names refer to lithostratigraphic units, some refer to biostratigraphic units.A num.ber of names have, by definition or by usuage, gradually acquired chronostratigraphic significance.The precise meaning of yet other names has never been clearly defined.Intensive fieldwork in the Taconic region, especially since 1950, has resulted in a proliferation of new names and of modifications of old names to new acceptations.On the one hand, a particular name may be used by the same worker or different workers for subtly or obviously different rock units ; on the other hand, different names may be applied to the same rock unit by different workers.To aid field investigators to traverse this nomenclatorial labyrinth, published stratigraphic names that are currently useful or have been recently used in Taconic geology are compiled in this study.A synonymy is prepared for each name.Each synonymy, as a rule, includes only names that have been used for the same lithostratigraphic unit in geologically contiguous regions.For areas that are not contiguous, rock units and their names are compared and discussed in the text, but no synonymies are produced because of the risk of serious mistakes.The distinction between lithostratigraphic units and chronostratigraphic units is important for Taconic geology because of the possibility of significant lateral facies transitions within the stratigraphic section.In this study, the term "correlation" is reserved for comparison of time units; for comparison of lithic units the term "equivalence" is used.
'%3e%3cpath fill='%23012169' d='M0 0v30h60V0z'/%3e%3cpath stroke='%23fff' stroke-width='6' d='m0 0 60 30m0-30L0 30'/%3e%3cpath stroke='%23C8102E' stroke-width='4' d='m0 0 60 30m0-30L0 30' clip-path='url(%23b)'/%3e%3cpath stroke='%23fff' stroke-width='10' d='M30 0v30M0 15h60'/%3e%3cpath stroke='%23C8102E' stroke-width='6' d='M30 0v30M0 15h60'/%3e%3c/g%3e%3c/svg%3e)