Computer Code: |
HEN |
Preferred Map Code: |
Hen |
Status Code: |
Pending Upgrade |
Age range: |
Telychian Age (ST)
— Telychian Age (ST) |
Lithological Description: |
Pebbly mudstones, conglomerates and sandstones. Rapid lateral facies changes common. |
Definition of Lower Boundary: |
Disconformably overlies Ashgill Formation. |
Definition of Upper Boundary: |
Gradational but taken at base of first thick mudstone unit above the sandstones and conglomerates of the formation. |
Thickness: |
15-80 metres. |
Geographical Limits: |
Central Wales. |
Parent Unit: |
Not Applicable (-)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
Quarry, 300 metres north-north-east of Henfryn, Abbeycwmhir. |
Reference(s): |
none recorded or not applicable |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E179
|