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 |
How this entity was disambiguated
This entity first appeared as the object of triple T4731517 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mercia Mudstone Group Context triple: [Cheshire Basin, contains, Mercia Mudstone Group]
-
A.
Sherwood Sandstone Group
The Sherwood Sandstone Group is a major Triassic sandstone rock sequence in the UK, notable as an important aquifer and hydrocarbon reservoir across several sedimentary basins.
-
B.
Oxford Clay
Oxford Clay is a Jurassic-age marine sedimentary rock formation in England renowned for its exceptionally well-preserved fossils, especially marine reptiles and invertebrates.
-
C.
London Clay Formation
The London Clay Formation is an early Eocene marine clay deposit in southeast England, renowned for its rich fossil content and its importance in shaping the geology and engineering properties of the London area.
-
D.
Millstone Grit
Millstone Grit is a coarse-grained Carboniferous sandstone formation in northern England, notably forming the rugged moorland landscapes of the Pennines.
-
E.
Yorkshire Jurassic limestone belt
The Yorkshire Jurassic limestone belt is a geological formation in northern England characterized by extensive Jurassic-age limestone deposits that have historically been quarried for building stone and industrial use.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mercia Mudstone Group Target entity description: 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.
-
A.
Sherwood Sandstone Group
The Sherwood Sandstone Group is a major Triassic sandstone rock sequence in the UK, notable as an important aquifer and hydrocarbon reservoir across several sedimentary basins.
-
B.
Oxford Clay
Oxford Clay is a Jurassic-age marine sedimentary rock formation in England renowned for its exceptionally well-preserved fossils, especially marine reptiles and invertebrates.
-
C.
London Clay Formation
The London Clay Formation is an early Eocene marine clay deposit in southeast England, renowned for its rich fossil content and its importance in shaping the geology and engineering properties of the London area.
-
D.
Millstone Grit
Millstone Grit is a coarse-grained Carboniferous sandstone formation in northern England, notably forming the rugged moorland landscapes of the Pennines.
-
E.
Yorkshire Jurassic limestone belt
The Yorkshire Jurassic limestone belt is a geological formation in northern England characterized by extensive Jurassic-age limestone deposits that have historically been quarried for building stone and industrial use.
- F. None of above. chosen
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mercia Mudstone Group Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.