Calibrating Early Paleozoic Time Scale
Geology and the concept of deep-time is represented by the geologic time scale. Unfortunately, the
early Paleozoic time scale (Ordovician, Silurian, Devonian) presents serious problems due to problems
with biostratigraphy correlations between the traditional marine timescale and non-marine
stratigraphy. In addition, there are boundaries and stages in these periods of time that have not been
radiometrically dated extensively, and depend mainly on biostratigraphy. Our goal is to use high
resolution zircon geochronology in GSSPs locations in the United Kingdom to obtain accurate dates and
calibrate the geologic time scale.