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Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is garnet-rich and magnetite-rich (a magnet sticks to it).

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
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Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Meta-iron formation in the Precambrian of Montana, USA.

This iron formation sample was metamorphosed at least twice during the Archean. At about 3.2 Ga, the protolith iron formation lithology (depositional age ~3.3 Ga) was subjected to granulite facies metamorphism. At about 2.8 Ga, the rock was subjected to upper amphibolite facies metamorphism.

The rock is magnetite-rich (a magnet sticks to it) and also has quartz and garnet.

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)
-----------------------
Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.

Quinteto Toninho Ferraguti é formado por Josué dos Santos (saxofone soprano), Vinicius Gomes (violão), Toninho Ferragutti (acordeon), Richard Metairon (contrabaixo) e Cléber Almeida (bateria). São Paulo. 06.05.18


Mais em: rogeriostella.wordpress.com/2018/05/07/toninho-ferragutti...

Acordeonista e compositor, Toninho Ferragutti apresenta gratuitamente o material do disco “A Gata Café” em São Paulo. 06.05.18


Mais em: rogeriostella.wordpress.com/2018/05/07/toninho-ferragutti...