Earth Science Conservation Review
| Yate's Corner - site of local interest | Down |
| Site Type: | Inland exposure |
| Site Status: | local interest |
| Council area: | Castlereagh District Council |
| Grid Reference: | J394623 |
| Google maps: | 54.49042,-5.84874 |
| Rocks | |
|---|---|
| Rock Age: | Silurian, Ordovician (Ashgill, Llandovery, Llandeilo) |
| Rock Name: | Strangford Group, Lessans Formation |
| Rock Type: | Mudstone, Siltstone |
| Interest | |
| Fossil Groups: | Graptolite |
Description:
The predominantly argillaceous Lessans Formation (Llandeilo to Ashgill) consists of black graptolitic mudstones and grey barren mudstones and siltstones. The broken succession at Yate's Corner, established from the southeast to the northwest, contains Nemagraptus gracilis, Dicranograptus clingani and Pleurograptus linearis Zone graptolitic mudstones including:
Climactograptus bicornis (Hall)
Cryptograptus tricornis? (Carruthers)
Dicellograptus sextans (Hall) {common}
Dicranograptus sp. {indet.}
?Didymograptus superstes Lapworth {abundant frag.}
Glossopgraptus? {frag.}
Hallograptus bimucronatus (Nicholson)
Nemagraptus gracilis (Hall)
Orthograptus whitfieldi (Hall)
The interval of faulted grey and khaki-brown barren mudstones separates these Ordovician mudstones from pale and medium grey mudstones and siltstones to the north west which contain Coronograptus gregarius Zone graptolites (Llandovery) (Pollock and Wilson, 1961).
Climactograptus bicornis (Hall)
Cryptograptus tricornis? (Carruthers)
Dicellograptus sextans (Hall) {common}
Dicranograptus sp. {indet.}
?Didymograptus superstes Lapworth {abundant frag.}
Glossopgraptus? {frag.}
Hallograptus bimucronatus (Nicholson)
Nemagraptus gracilis (Hall)
Orthograptus whitfieldi (Hall)
The interval of faulted grey and khaki-brown barren mudstones separates these Ordovician mudstones from pale and medium grey mudstones and siltstones to the north west which contain Coronograptus gregarius Zone graptolites (Llandovery) (Pollock and Wilson, 1961).
| Enlander, I., Dempster, M. & Doughty, P., 2024. Yate's Corner - site of local interest, County Down, site summary. [In] Earth Science Conservation Review. https://www.habitas.org.uk/escr/summary.php?item=758. Accessed on 2024-12-26 |
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