Alpha Ridge
E75802
Alpha Ridge is a major submarine volcanic ridge in the Arctic Ocean, extending beneath the polar ice and playing a key role in the region’s geological structure and continental shelf debates.
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
geologic feature
ⓘ
submarine volcanic ridge ⓘ |
| ageCharacterization | Mesozoic to early Cenozoic ⓘ |
| associatedWith |
High Arctic Large Igneous Province
ⓘ
Lomonosov Ridge ⓘ Alpha–Mendeleev Ridge complex ⓘ
surface form:
Mendeleev Ridge
|
| claimedAsNaturalProlongationBy |
Canada
ⓘ
Russia ⓘ |
| coveredBy | perennial sea ice ⓘ |
| discoveredBy | geophysical surveys ⓘ |
| extendsBeneath | Arctic sea ice ⓘ |
| formedBy | mantle plume activity (hypothesized) ⓘ |
| formedDuring |
Cretaceous
ⓘ
surface form:
Cretaceous period
|
| forms | major topographic high on Arctic seafloor ⓘ |
| geologicalNature |
igneous province
ⓘ
volcanic ⓘ |
| has | thick igneous crust ⓘ |
| hasUncertain | crustal affinity ⓘ |
| importantFor |
Arctic tectonic reconstructions
ⓘ
paleogeographic reconstructions ⓘ understanding Arctic Ocean evolution ⓘ |
| influences | regional crustal structure of the Arctic Ocean ⓘ |
| isDifficultToStudyBecause |
permanent ice cover
ⓘ
remote Arctic location ⓘ |
| isKeyStructureIn | Amerasia Basin opening models ⓘ |
| locatedIn |
Nansen Basin
ⓘ
surface form:
Arctic Basin
Arctic Ocean ⓘ |
| locatedOn | oceanic crust ⓘ |
| maximumWaterDepthAbove | approximately 1000–2000 meters (order of magnitude) ⓘ |
| morphologicalType | submarine ridge ⓘ |
| orientation | roughly north-south ⓘ |
| partOf | Arctic Ocean seafloor ⓘ |
| partOfDebate | Arctic continental shelf delimitation ⓘ |
| relatedTo |
Amerasian Basin
ⓘ
surface form:
Amerasia Basin
Canada Basin ⓘ |
| relevantTo |
United Nations Convention on the Law of the Sea
ⓘ
extended continental shelf claims ⓘ |
| separates | Canada Basin and Makarov Basin ⓘ |
| studiedUsing |
bathymetric mapping
ⓘ
gravity anomaly data ⓘ magnetic anomaly data ⓘ seismic reflection data ⓘ |
| subjectOf |
geopolitical interest
ⓘ
marine geological research cruises ⓘ |
| tectonicSetting | intraplate volcanic province (interpreted) ⓘ |
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.