Torridonian Supergroup

E617412

The Torridonian Supergroup is a thick sequence of late Precambrian sedimentary rocks in northwest Scotland, renowned for its ancient red sandstones that rest on the Lewisian gneiss and record early continental environments.

All labels observed (1)

Label Occurrences
Torridonian Supergroup canonical 1

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf sedimentary rock sequence
supergroup
ageInMillionsOfYears approximately 1200 to 1000 Ma
color red
contains alluvial fan deposits
deltaic deposits
paleosols
river channel deposits
country United Kingdom
depositionalEnvironment continental
fluvial
lacustrine
forms prominent mountain scenery
steep-sided sandstone mountains
fossilContent microfossils
stromatolites
geologicalAge Neoproterozoic
linked to: Neoproterozoic Era

late Precambrian
hasSedimentaryStructures cross-bedding
desiccation cracks
ripple marks
hasSubunit Sleat Group
linked to: Torridon Group

Stoer Group
Torridon Group
lithology conglomerate
mudstone
sandstone
siltstone
locatedIn Scottish Highlands
northwest Scotland
namedAfter Torridon
linked to: Torridon Hills
notableExposure Applecross Peninsula
Assynt
Coigach
Loch Maree
overlies Lewisian Gneiss Complex
records early continental weathering
early terrestrial environments
region Caledonian foreland
researchSignificance important for Neoproterozoic paleoclimate studies
key record of Precambrian continental sedimentation
stratigraphicRelationship part of the foreland to the Caledonian Orogeny
tectonicSetting rift-related basin
thickness over 6 kilometres
typeLocality Loch Torridon
unconformablyOverlies Lewisian Gneiss Complex
underlies Cambrian sedimentary rocks

How these facts were elicited

Referenced by (1)

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

Lewisian complex basement overlainUnconformablyBy Torridonian Supergroup