Hawkesbury Sandstone
E352233
Hawkesbury Sandstone is a prominent Triassic sedimentary rock formation in the Sydney region of Australia, known for its thick, cliff-forming sandstone beds that shape much of the local landscape and geology.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hawkesbury Sandstone canonical | 4 |
| Nepean sandstone | 3 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Triassic sandstone
ⓘ
geologic formation ⓘ sedimentary rock unit ⓘ |
| age | Middle Triassic ⓘ |
| associatedWith | sclerophyll vegetation communities ⓘ |
| color |
light grey
ⓘ
yellowish brown ⓘ |
| contains |
channel-fill structures
ⓘ
conglomeratic lenses ⓘ cross-bedding ⓘ |
| controls | cliffed coastline around Sydney ⓘ |
| depositionalEnvironment |
braided river system
ⓘ
fluvial ⓘ |
| economicUse |
building stone in Sydney
ⓘ
dimension stone ⓘ |
| erosionResistance | high ⓘ |
| forms |
cliffs
ⓘ
escarpments ⓘ rocky plateaus ⓘ |
| geologicPeriod | Triassic ⓘ |
| geologicUnitOf | eastern Australia ⓘ |
| hasFossils |
rare plant fossils
ⓘ
trace fossils ⓘ |
| influences |
Sydney region topography
ⓘ
soils of the Sydney sandstone region ⓘ |
| lithology | sandstone ⓘ |
| locatedIn |
Australia
ⓘ
New South Wales ⓘ Greater Sydney region ⓘ
surface form:
Sydney region
|
| namedAfter | Hawkesbury River ⓘ |
| notableExposure |
Blue Mountains
ⓘ
surface form:
Blue Mountains escarpment
Ku-ring-gai Chase National Park NERFINISHED ⓘ Royal National Park ⓘ South Head ⓘ
surface form:
Sydney Harbour cliffs
|
| notableFeature | prominent jointing and fracturing ⓘ |
| overlies | Narrabeen Group ⓘ |
| partOf | Sydney Basin ⓘ |
| permeability | locally high along fractures ⓘ |
| porosity | generally low to moderate ⓘ |
| primaryLithology | quartz sandstone ⓘ |
| regionalSignificance | major structural unit of the Sydney Basin ⓘ |
| stratigraphicRank | formation ⓘ |
| texture | medium- to coarse-grained ⓘ |
| thickness | up to about 250 m ⓘ |
| typicalCement | siliceous cement ⓘ |
| underlies | Wianamatta Group ⓘ |
| weatheringStyle | forms overhangs and rock shelters ⓘ |
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nepean sandstone
this entity surface form:
Nepean sandstone
this entity surface form:
Nepean sandstone