| Computer Code: |
HBY |
Preferred Map Code: |
Hby |
| Status Code: |
Pending Upgrade |
| Age range: |
Tremadoc Series (O1)
— Tremadoc Series (O1) |
| Lithological Description: |
Green-grey shaly mudstones, siltstones and fine-grained sandstones. |
| Definition of Lower Boundary: |
Not defined. |
| Definition of Upper Boundary: |
Defined by facies change to Stiperstones Quartzite Formation. May be non-sequence at top. |
| Thickness: |
c.800m |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Not Entered (?)
|
| Previous Name(s): |
Shineton Shales [Obsolete Name and Code: Use HBY, SHSH]
(-2234)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Habberley, Shropshire. |
| Reference(s): |
| Lapworth, C . 1887. The Ordovician rocks of Shropshire. British Association for the Advancement of Science. Report for 1886. Birmingham Meeting 662. |
| Whittard, W F. 1931. The geology of the Ordovician and Valentian rocks of the Shelve Country, Shropshire. Proceedings of the Geologists' Association, Vol.42, 322-344. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E165
|
