GSSP for Homerian Stage
Definition:
The base of the Homerian Stage is located along the northern bank of a small stream that feeds the tributary to Sheinton Brook in Whitwell Coppice, 500m north of the hamlet of Homer, UK, and coincides with the base of the Cyrtograptus lundgreni Graptolite Biozone.
Location:
The GSSP is located along the northern bank of a small stream that feeds the tributary to Sheinton Brook in Whitwell Coppice, 500m north of the hamlet of Homer at SO 6194 0204.
The GSSP lies within the upper half of the Apedale Member of the Coalbrookdale Formation. The GSSP lies within a continuous mudstone sequence.
Primary Markers:
The base of the Homerian Stage coincides with the base of the Cyrtograptus lundgreni Graptolite Biozone.
Correlation Events:
Graptolite FAD Cyrtograptus lundgreni
Other Locations around the World:
Holland, C. H. and Bassett, M. G., 1989 (eds.). A global standard for the Silurian System. National Museum of Wales, Geological Series 9, Cardiff.
References:
Lethaia 14
Holland, C. H., 1982. The state of Silurian Stratigraphy. Episodes 5/3, p. 21-23, 1982.
Bassett, M. G., 1989. The Wenlock Series in the Wenlock Area. In: Holland, C. H. and Bassett, M. G. (eds.). A global standard for the Silurian System. National Museum of Wales, Geological Series 9, p. 51-73, Cardiff.