...F IG . 4. Simplified geologic map of the 10,000 km 2 1.44 Ga Harp Lake Intrusive Suite, south-central Labrador, Canada, showing significant areas of olivine-bearing anorthosite typical of nearly all of the largest Proterozoic anorthosite plutonic suites (modified from Emslie, 1980...

...R. E. Meyers; R. F. Emslie Abstract The Harp olivine diabase dikes, of Neohelikian age, form an east-northeast trending swarm that cuts rocks of the Harp Lake Complex in central Labrador. The petrography, and rock and mineral chemistry of the dikes indicate that they are transitional in character...

... studies of many other Proterozoic anorthosite – mangerite – charnockite – granite (AMCG) suites such as the Harp Lake complex, the Michikamau intrusion, the Mealy Mountains Igneous Suite, the Mistastin batholith, the Atikonak River Complex, and numerous other complexes along the north shore of the St...

.... Mafic magmatism during the late Elsonian is represented, from north to south, by the Nutak, Nain, and Harp dykes (possibly including the Schefferville dykes); the Seal Lake Group; and the Mealy dykes (Fig.  8 ). The Harp dykes are a suite of east-northeast-trending intrusions emplaced...

.... , The Michikamau anorthositic intrusion, Labrador , Canad. J. Earth Sci. , 2 , 385 – 399 , 1965 . 15. Emslie , R.F. , Geology and petrology of the Harp Lake Complex , Central Labrador: an example of Elsonian magmatism, Geol. Surv. Canad. Bull...

...Fig. 1. Regional map of Labrador showing the Nain Plutonic Suite’s Coastal and Interior Trend AMCG associations as well as major structural corridors in the region. Peralkaline igneous centres are shown in red. H – Harp Lake intrusion; HT – Hettasch intrusion; K – Kiglapait intrusion; MA...

...E. Irving; R. F. Emslie; J. K. Park Abstract The remanent magnetism of anorthositic rocks from the Harp Lake Complex consists of two antiparallel components, M and H , defined on the basis of their coercivities. M has remanent coercivities generally in the range 100–1000 Oe (7.96 × 10 3 –7.96 × 10...

...F IG 2. Generalized geology of northern Labrador, showing the locations of the Nain Plutonic Suite and Harp Lake intrusion, locations of the Voisey’s Bay deposits, and locations of more detailed maps in other figures. ...

... anorthosite ( Martignole et al. 1993 ) (Pe in Fig. 1 ) and the 1327 ± 16 Ma ( Hébert et al. 2005 ) De La Blache massif (D in Fig. 1 ), both occurring within the “cold orogenic lid” region of the eastern Grenville Province. The rest—and collectively more voluminous—(Michikamau, Harp Lake, and Nain intrusive...

.... This signature disappears some 35 km off the coast, and Funck et al. (2000 b ) were not able to determine whether or not the NPS continued seaward. Onshore, the magnetic signature of the NPS and other Elsonian intrusions (Harp Lake Intrusive Suite, Mistastin batholith) is variable with both positive...

... by petrological models keyed to deep, protracted fractionation of the basic magmas. In some cases, field evidence is consistent with a back-arc setting ( e.g., Mistastin, Michikamau, and Harp Lake massifs: Rivers & Corrigan 2000 , Rivers 2008b ). In other instances, reactivation along major fault zones...

... to the A-type rapakivi suite of Fennoscandia, the anorthositic rocks of the complex have been considered as being of massif type ( cf. Ashwal 1993 ). The rock types of the complex have previously been compared to those of the Harp Lake complex of Labrador ( Alviola et al. 1999 ). The Ahvenisto complex...

... area (defined as maximum–minimum contours intersected in each 10-km square cell). The predominant mapped surficial unit ( Klassen et al. 1992 ) is present to a greater or lesser extent over the entire study area with the exception of the SE (over the Harp Lake Intrusive Suite; Emslie 1980...

... of debate ( Morse 1982 ; Emslie et al. 1994 ). It has been suggested that the presence of Al–Fe-rich gabbros found in close proximity to anorthosite plutons, e.g., the NPS ( Royse et al. 1999 ) and the Laramie, Harp Lake, Adirondacks, and Kiglapait intrusions ( Olson and Morse 1990 ), are important...

.... Geology and petrology of the Harp Lake Complex, CentralLabrador: An example of Elsonian magmatism. Bulletin of the Geological Survey of Canada, 293. Emslie R.F. Tobi A. Touret J.L.R. Proterozoic anorthosite massif The Deep Proterozoic Crust in the North Atlantic provinces 1985...

... anorthosites, are olivine-saturated and lie on the OpUIlO surface. Magmas that crystallized both the Kiglapait intrusion and Harp Lake anorthosites underwent relative reduction ( Fig. 8C ) and increases in silica activity ( Fig. 8D ) during differentiation. The Nain anorthosite in the Puttuaaluk Lake area...