| Gorstian | |
| Color: | Gorstian |
| Time Start: | 427.4 |
| Time Start Uncertainty: | 0.5 |
| Time End: | 425.6 |
| Time End Uncertainty: | 0.9 |
| Caption Map: | Paleogeography of the late Gorstian, 425 Ma |
| Timeline: | Silurian |
| Name Formality: | Formal |
| Name Accept Date: | 1980[1] |
| Celestial Body: | earth |
| Usage: | Global (ICS) |
| Timescales Used: | ICS Time Scale |
| Chrono Unit: | Age |
| Strat Unit: | Stage |
| Timespan Formality: | Formal |
| Lower Boundary Def: | FAD of the graptolite Saetograptus (Colonograptus) varians |
| Lower Gssp Location: | Pitch Coppice, Ludlow, U.K. |
| Lower Gssp Accept Date: | 1980 |
| Upper Boundary Def: | Imprecise. Near FAD of the graptolite Saetograptus leintwardinensis |
| Upper Def Candidates: | None |
| Upper Gssp Candidates: | None |
| Upper Gssp Location: | Sunnyhill, Ludlow, England |
| Upper Gssp Accept Date: | 1980 |
In the geologic timescale, the Gorstian is an age of the Ludlow Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that is comprehended between 427.4 ± 0.5 Ma and 425.6 ± 0.9 Ma (million years ago), approximately. The Gorstian Age succeeds the Homerian Age and precedes the Ludfordian Age.[2] The age is named after Gorsty village southwest of Ludlow. The base of the age is marked by Saetograptus (Colonograptus) varians. The type section is located in a quarry in the Elton Formation at Pitch Coppice, Shropshire, United Kingdom.