Mercia Mudstone Group
E468064
The Mercia Mudstone Group is a thick sequence of predominantly red mudstones and siltstones of Triassic age widely distributed across parts of the UK, forming an important component of its subsurface geology.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mercia Mudstone Group canonical | 3 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
lithostratigraphic group ⓘ |
| chronostratigraphicRange |
Anisian
NERFINISHED
ⓘ
Carnian ⓘ Ladinian ⓘ Norian NERFINISHED ⓘ Rhaetian ⓘ |
| color | red ⓘ |
| contains |
dolomite
ⓘ
evaporite beds ⓘ gypsum ⓘ halite ⓘ sandstone interbeds ⓘ |
| country | United Kingdom ⓘ |
| environmentOfDeposition |
continental playa
ⓘ
sabkha ⓘ shallow marine ⓘ |
| extendsBeneath |
Cheshire Basin
NERFINISHED
ⓘ
East Irish Sea Basin NERFINISHED ⓘ English Midlands NERFINISHED ⓘ Wessex Basin NERFINISHED ⓘ |
| geologicAge | Triassic ⓘ |
| geologicPeriod | Late Triassic NERFINISHED ⓘ |
| hasSubunit |
Arden Sandstone Formation
NERFINISHED
ⓘ
Blue Anchor Formation ⓘ Branscombe Mudstone Formation NERFINISHED ⓘ Brooks Mill Mudstone Formation NERFINISHED ⓘ Sidmouth Mudstone Formation NERFINISHED ⓘ Tarporley Siltstone Formation NERFINISHED ⓘ Twyning Mudstone Formation NERFINISHED ⓘ |
| isAssociatedWith | low permeability aquitards ⓘ |
| isMappedOn | British Geological Survey maps NERFINISHED ⓘ |
| isSourceOf | engineering geological hazards ⓘ |
| lithology |
mudstone
ⓘ
siltstone ⓘ |
| maximumThickness | over 1000 m ⓘ |
| namedBy | British Geological Survey NERFINISHED ⓘ |
| notableIn |
hydrogeology of the UK
ⓘ
subsurface geology of the UK ⓘ |
| overlies |
Sherwood Sandstone Group
NERFINISHED
ⓘ
older Permian strata ⓘ |
| partOf | Mesozoic stratigraphy of the United Kingdom ⓘ |
| previousName | Keuper Marl NERFINISHED ⓘ |
| region |
England
ⓘ
Wales ⓘ |
| underlies |
Lias Group
NERFINISHED
ⓘ
Penarth Group NERFINISHED ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.