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- Bravo_Lake_Formation abstract "The Bravo Lake Formation is a mafic volcanic belt and large igneous province located at the northern margin of the Trans-Hudson orogeny on central Baffin Island, Nunavut, Canada. It is exposed along a nearly continuous east-west passage for 120 km (75 mi) and changes in stratigraphic thickness from 1 to 2.5 kilometers. The formation is a rare alkaline-suite that formed as a result of submarine rifting during the Paleoproterozoic period. The Bravo Lake Formation is surprisingly undeformed by the Himalayan-scale forming event during the Trans-Hudsonian orogeny.The stratigraphy of the Bravo Lake Formation starts with a basic section of iron-oxide rich sandstones, psammites, and semi-pelites which cover a series of deformed pillow lavas which expand in viscosity towards the west, and volcanic/clastic deposits and ultramafic sills. The lower volcanic section is covered by garnet and diopside bearing calc-silicate layers and finely layered metasediments composed of course-grained actinolite, hornblende and biotite followed by pelites and semi-pelites that are intruded by separate sills. In the Ridge Lake area, the volcanic belt includes an interlayered series of amphibolite, gabbro, iron formation, sulfidic schist and metasediments.Geochemical results of pillow lavas and chill boundaries along five transects across the volcanic belt suggest the existence of three chemically different magma types within the Bravo Lake Formation.Lavas of the volcanic belt display geochemical characteristics similar to modern ocean-island-basalt groups. They range from moderately to intensely fractionated. REE-profiles are similar to those from tholeiitic basalts to extremely alkaline lavas in Hawaii.".
- Bravo_Lake_Formation wikiPageExternalLink sub_program.asp?sess=98&form=10&abs_no=439.
- Bravo_Lake_Formation wikiPageID "13783010".
- Bravo_Lake_Formation wikiPageRevisionID "543220331".
- Bravo_Lake_Formation hasPhotoCollection Bravo_Lake_Formation.
- Bravo_Lake_Formation subject Category:Baffin_Island.
- Bravo_Lake_Formation subject Category:Landforms_of_Qikiqtaaluk_Region.
- Bravo_Lake_Formation subject Category:Large_igneous_provinces.
- Bravo_Lake_Formation subject Category:Proterozoic_volcanism.
- Bravo_Lake_Formation subject Category:Volcanic_belts.
- Bravo_Lake_Formation subject Category:Volcanism_of_Nunavut.
- Bravo_Lake_Formation point "68.51666666666667 -73.3".
- Bravo_Lake_Formation type AdministrativeDistrict108491826.
- Bravo_Lake_Formation type District108552138.
- Bravo_Lake_Formation type LargeIgneousProvinces.
- Bravo_Lake_Formation type Location100027167.
- Bravo_Lake_Formation type Object100002684.
- Bravo_Lake_Formation type PhysicalEntity100001930.
- Bravo_Lake_Formation type Region108630985.
- Bravo_Lake_Formation type State108654360.
- Bravo_Lake_Formation type YagoGeoEntity.
- Bravo_Lake_Formation type YagoLegalActorGeo.
- Bravo_Lake_Formation type YagoPermanentlyLocatedEntity.
- Bravo_Lake_Formation type SpatialThing.
- Bravo_Lake_Formation comment "The Bravo Lake Formation is a mafic volcanic belt and large igneous province located at the northern margin of the Trans-Hudson orogeny on central Baffin Island, Nunavut, Canada. It is exposed along a nearly continuous east-west passage for 120 km (75 mi) and changes in stratigraphic thickness from 1 to 2.5 kilometers. The formation is a rare alkaline-suite that formed as a result of submarine rifting during the Paleoproterozoic period.".
- Bravo_Lake_Formation label "Bravo Lake Formation".
- Bravo_Lake_Formation sameAs m.03cj4fr.
- Bravo_Lake_Formation sameAs Q4958451.
- Bravo_Lake_Formation sameAs Q4958451.
- Bravo_Lake_Formation sameAs Bravo_Lake_Formation.
- Bravo_Lake_Formation lat "68.51666666666667".
- Bravo_Lake_Formation long "-73.3".
- Bravo_Lake_Formation wasDerivedFrom Bravo_Lake_Formation?oldid=543220331.
- Bravo_Lake_Formation isPrimaryTopicOf Bravo_Lake_Formation.