(View of St. Audries Bay) - 2002
St Audries bay is most interesting for the geology of Somerset. To the East the bay exposes nearly the whole sequence of rocks from the Upper Triassic Mercia Mudstones and to the West of the bay, the beds succeed down to the Lower Jurassic Blue Lias beds. The Aldergrove beds (alternating gray mudstones and limestones) are well exposed. The Lower parts of the Blue Lias beds can be seen higher up walking further West.
(The Lower Lias, Shale and Limestone layers can clearly be seen) - 2002
(The Triassic Beds) - 2002
(Lower Lias Exposed on Foreshore) - 2003 [Sent in by Terri]
|
|
Late |
Volgian |
Portlandian |
|
142 to 147 |
| Tithonian |
| 147 to 150 |
|
Late |
150 to 154 |
| Early |
|
Corallian |
154 to 159.4 |
| Late Oxford Clay |
Middle |
Callovian |
Middle Oxford Clay |
159 to 165 |
| Early Oxford Clay |
| Kellaways |
| Late Cornbrash |
| Bathonian |
Early Cornbrash |
165 to 170 |
| Forest Marble |
| Frome Formation |
| Wattonensis Beds |
| Fullers Earth |
| Zigzag Beds |
| Bajocian |
Late Inferior Oolite |
170 to 177 |
| Middle Inferior Oolite |
| Aalenian |
Early Inferior Oolite |
177 to 180.1 |
| Scissum Beds |
| Bridport Sands |
Early |
Toarcian (Late Lias) |
180 to 190 |
| Pliensbachian (Middle and Early Lias) |
190 to 195 |
| Sinemurian (Early Lias) |
195 to 201 |
| Hettangian (Early Lias) |
201 to 205.7 |
|
Triassic |
Late |
Rhaetian |
Penarth group |
206 to 210 |
| Mercia Mudstone group |
| Norian |
210 to 220 |
| Carnian |
220 to 227.4 |
Middle |
Ladinian |
227 to 233 |
| Anisian |
233 to 241.7 |
Early |
Scythian |
Olenekian |
242 to 244 |
| Induan |
244 to 248.2 |
| Dunrobin Bay Formation |
Lady's Walk Shale |
Golspie |
| White Sandstone |
Golspie |
| Carbonaceous Siltstone |
Golspie |
Mercia Mudstone Group (Norian, Carnian, Ladinian)
210 - 233 MYA |
FORMATIONS AND DEPOSITS |
LOCATIONS |
M
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R
C
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M
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D
S
T
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G
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P
|
Red (Keuper) Marls |
Aust
Watchet
St Audries Bay
Doniford Bay
Blue Anchor |
| Tea Green Marls |
Aust
Lilstock
Blue Anchor |
| Blue Anchor Formation |
|
| Sully Beds |
|
|
1:250 000 Geological Map of St Audries Bay
Geological Maps are sold either Flat or Folded for Solid, or Seabed geology. Special editions may be available for certain locations. For a complete list click the link below.
Click here to BUY ONLINE from our Store |
|
1: 50 000 Geological Map of St Audries Bay
Geological Maps are sold either Flat or Folded for Solid, Drift or combined geology. Special editions and memoirs are available for certain locations. For a complete list of
1: 50 000 maps, click the link below.
Click here to BUY ONLINE from our Store |
