Portland Fault
E930714
The Portland Fault is a significant geological fault structure in southern England that plays a key role in the tectonic framework and sedimentary history of the Wessex Basin.
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
extensional fault
ⓘ
geological fault ⓘ normal fault ⓘ |
| affects |
hydrocarbon prospectivity in the Wessex Basin
ⓘ
subsurface structure beneath Dorset ⓘ |
| ageOfInitiation | Mesozoic ⓘ |
| associatedWith |
Mesozoic rifting in southern England
ⓘ
formation of the Wessex Basin ⓘ structural evolution of the English Channel margin ⓘ |
| controls |
sedimentary architecture of the Wessex Basin
ⓘ
thickness variations in Mesozoic sedimentary sequences ⓘ |
| country | United Kingdom ⓘ |
| currentActivity | tectonically inactive at present-day surface conditions ⓘ |
| deformationPhase | Mesozoic extension phase of southern England ⓘ |
| evidenceFrom |
regional geological mapping
ⓘ
seismic reflection data ⓘ subsurface well data ⓘ |
| formsBoundaryBetween | structural blocks within the Wessex Basin ⓘ |
| geologicalPeriodActivity |
Cretaceous
ⓘ
Jurassic ⓘ Mesozoic NERFINISHED ⓘ |
| influences |
distribution of Cretaceous sediments in the Wessex Basin
ⓘ
distribution of Jurassic sediments in the Wessex Basin ⓘ |
| laterReactivation | mild inversion during Cenozoic compression ⓘ |
| lithologyInfluence | controls facies changes across the fault ⓘ |
| locatedIn |
Wessex Basin
NERFINISHED
ⓘ
southern England NERFINISHED ⓘ |
| mapScaleSignificance | regional ⓘ |
| movementType | downthrow to the south ⓘ |
| namedAfter | Isle of Portland NERFINISHED ⓘ |
| orientation | approximately east–west ⓘ |
| partOf | tectonic framework of the Wessex Basin ⓘ |
| region | Dorset NERFINISHED ⓘ |
| relatedTo |
Portland–Wight Fault Zone
NERFINISHED
ⓘ
Purbeck Monocline NERFINISHED ⓘ |
| role | major structural lineament in southern England ⓘ |
| significance | key control on the tectono-sedimentary evolution of the Wessex Basin ⓘ |
| studyDiscipline |
basin analysis
ⓘ
petroleum geology ⓘ structural geology ⓘ |
| tectonicSetting | Mesozoic extensional basin ⓘ |
| tectonicStyle | basin-bounding fault ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.