Thames Group

E401565

The Thames Group is a geological rock unit in southeast England, primarily consisting of Paleogene-age marine and estuarine sediments that overlie older formations in the London Basin.

All labels observed (1)

Label Occurrences
Thames Group canonical 2

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf geological group
lithostratigraphic unit
chronostratigraphicPosition early to middle Eocene for much of the succession
contains Harwich Formation
linked to: Oldhaven Formation

London Clay Formation
Reading Formation in some classifications
linked to: Reading Formation

glauconitic sands in some members
country United Kingdom
depositionalEnvironment deltaic in parts
estuarine
marine
extendsTo Greater London area
linked to: Greater London

Thames Estuary area
parts of Essex
parts of Kent
geologicalAge Paleogene
hasColor typically grey to brown clays and silts
hasEconomicUse source of brick clay in southeast England
hasFossils marine invertebrates
microfossils
plant remains
hasStratigraphicCode THAM (BGS code, context-dependent)
hasTypicalThickness several tens to over 100 metres depending on location
isDocumentedIn British Geological Survey Lexicon of Named Rock Units
linked to: BGS OpenGeoscience
isImportantFor hydrogeological studies in the London Basin
understanding Paleogene sea-level changes in southeast England
isPartOfBasinFill London Basin
lithology clay
estuarine sediments
marine sediments
sand
silt
locatedIn London Basin
southeast England
namedAfter River Thames
linked to: Thames
overlies Chalk Group
Lambeth Group
partOf Cenozoic sedimentary succession of the London Basin
Paleogene stratigraphy of the United Kingdom
onshore stratigraphy of southern Britain
recordedBy British Geological Survey
region England
stratigraphicRank group
underlies Bracklesham Group
London Clay Formation where subdivided differently in some schemes

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

London Basin overlainBy Thames Group
Lambeth Group underlies Thames Group