... 95 = 9°. This pole position suggests that the east component was acquired after the rotation of this part of the Grenville Orogen. The cores from 3 sites exhibited two clear end-points during a.f. demagnetization and thus contain both the northwest and the east component.The Helikian Shabogamo Gabbro...

...R. D. Dallmeyer Abstract Biotite from a gabbro sill of the Shabogamo intrusive suite in southwestern Labrador records a well defined 40 Ar/ 39 Ar plateau age of 1353 ± 17 Ma. This is similar to the 1375 ± 60 Ma dates recorded by Sm–Nd and Rb–Sr whole-rock isotopic systems of the suite. Together...

...Ronald F. Emslie; Michael A. Hamilton; Charles F. Gower Abstract The Michael Gabbro (1426 Ma) and the Shabogamo Gabbro (1459 Ma) represent two large diabase intrusive episodes that affected the northwestern margin of the northeastern Grenville Province. Both have sustained variable effects...

... equivalent units within the Grenville Province. The nomenclature of the Knob Lake Group will thus replace that of the Gagnon Group. Two other changes in terminology are proposed in accordance with a recent amendment to the Code of Stratigraphic Nomenclature . Shabogamo Gabbro is renamed Shabogamo Intrusive...

...-equilibration continued to near 530 °C or perhaps lower.A whole-rock Rb–Sr (errorchron) age for the Mealy dykes yielded 1380 ± 54 Ma, Sr 1 = 0.7028 ± 0.0002, which, within precision estimates, is the same as published ages for other basic rocks in the region including Shabogamo gabbros, Seal Lake basalts...

... Proterozoic Knob Lake Group, and a newly recognized unit, the Equus Lake formation. Both are intruded by the Middle Proterozoic Shabogamo gabbro. Structural elements in the rocks record evidence of a polyorogenic history that is attributed to both the ca. 1800 Ma Hudsonian and the ca. 1000 Ma Grenvillian...

... (in part modified from Ketchum and Davidson 2000 , Indares et al. 2000 ). Red bars, ages of granitoid plutons; green bars, mafic dyke swarms, gabbros, and volcanic rocks. AG, Algonquin gabbro; AV, arc (or back-arc) volcanics; F-T, Fe–Ti gabbro; SD, Sudbury diabase; SG, Shabogamo gabbro; diagonal striping...

... known as the Michael gabbro in eastern Labrador and the Shabogamo gabbro in western Labrador and eastern Québec. The two suites are subalkaline to mildly alkaline tholeiites with very similar major and trace element chemistry and a “within-plate” signature. Gower et al. ( 1990 b ) interpreted them...

...Aphrodite Indares Abstract Undeformed lenses of olivine–orthopyroxene–gabbro belonging to the 1429 Ma Shabogamo Intrusive Suite (Parautochthonous Belt of the eastern Grenville Province) host the first occurrence of eclogite mineral assemblages reported from the Grenville Province. These rocks...

... à échelle régionale.Les gabbros de la séquence intrusive de Shabogamo sont mis en place dans les roches volcaniques et volcanoclastiques du groupe du lac Blueberry lesquels sont datées provisoirement à 1540 ± 40 Ma. Les roches volcaniques sont par conséquent d'âge équivalent, et probablement reliées aux...

... and Ryan 1996 ). Mafic magmatism during the early Elsonian is represented by a swarm of roughly east-northeast-trending, sheet-like bodies (mostly dykes) termed the Michael gabbro in eastern Labrador and the Shabogamo gabbro in western Labrador (Fig.  6 ). Collectively, the two suites form a belt...

... ). The survey area, near Shabogamo Lake, straddles the border between Québec and Labrador. This data set was selected because it contained both uncompensated and compensated magnetic data as well as aircraft attitude information from a triaxial fluxgate magnetometer. Two Piper Navajo PA-31 airplanes were used...

... with variable amounts of iron oxides. The Nault graphitic schists overlying the Wabush Formation are rarely found in the area of the mines. The Shabogamo Formation includes gabbro and olivine gabbro dikes and sills which intrude all of the formations. Within and adjacent to the Wabush Formation, the gabbro...

...), SG-MG: Shabogamo–Michael gabbros, ca. 1470–1460 Ma, 9). Age references: 1) Hamilton et al. (2004) , 2) Emslie & Hunt (1990) , 3) Higgins & van Breemen (1992 , 1996) , 4) van Breemen & Higgins (1993) , 5) Machado & Martignole (1988) , 6) McLelland et al. (2004) , 7...

.... 251 – 262 . Rogers , C. , Cousens1 , B. , Ernst , R.E. and Soderlund , U. ( 2019 ) Phosphorus and Potassium Metasomatic Enrichment in the Mantle Source of the c. 1450–1425Ma Michael–Shabogamo Gabbro of Eastern Laurentia . Jour. Petrol. v. 60 ( 1 ), pp. 57 – 84...

... of the MIZ consists of the parautochthonous Molson Lake and Gagnon terranes (Fig.  1 ). The Molson Lake terrane, located east of the MIZ, is part of the 1650 Ma Trans-Labrador batholith and contains sills of the 1459 Ma Shabogamo gabbro ( Connelly et al. 1995 ). The latter was partially transformed...

... mésoprotérozoïques, connus en tant que Suite intrusive de Shabogamo ( Rivers 1983 a ; Brown et al. 1992 ; van Gool et al. 2008 ). Ces gabbros se sont mis en place sous forme de filon-couches dans la stratigraphie préalablement plissée des roches méta-sédimentaires paléoprotérozoïques du Groupe de Knob Lake...