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![Simplified geologic sketch map of the <span class="search-highlight">Labrieville</span> massif showing locations ...]()
![Chondrite-normalized rare-earth element (REE) abundances in <span class="search-highlight">Labrieville</span> lam...]()
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![F ig 4. Plot of wt percent Fe 2 O 3 (T) versus parts per
million Sc in who...]()
![F ig . 1. Photomicrographs illustrating textures of nelsonites (plane-polar...]()
![F ig . 2. Photomicrographs illustrating textures of oxide-apatite gabbronor...]()
![F ig . 10. Chondrite-normalized REE plots for apatites from (A) St. Urbain,...]()
![F ig . 14. Calculated REE patterns for melts in equilibrium with apatite fr...]()
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![Chondrite-normalized REE plot for Montpelier and Roseland samples. Data for...]()
![Whole-rock normative feldspar compositions for Montpelier (A) and Roseland ...]()
![Schematic representation of the system FeO–Fe 2 O 3 –TiO 2 illustrating co...]()
![Total intensity aeromagnetic map of the region shown in Fig. 2 . Warm colo...]()
![Various whole-rock comparisons between Montpelier and Roseland, and the St-...]()
1-20 OF 78 RESULTS FOR
Labrieville
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Journal Article
Mesoproterozoic lamprophyres in the Labrieville Massif, Quebec: clues to the origin of alkalic anorthosites?
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 17 July 2002
Canadian Journal of Earth Sciences (2002) 39 (6): 983–997.
...Brent E. Owens; Paul B. Tomascak Abstract Mesoproterozoic lamprophyre dikes occur at four localities within the ∼1010 Ma Labrieville anorthosite in the Grenville Province of southern Quebec. All dikes are thin (<20 cm wide), oriented ∼N57 W, and steeply dipping. Three are biotite lamprophyres...
FIGURES
| View All (8)
Journal Article
Significance of pyroxene megacrysts for massif anorthosite petrogenesis: Constraints from the Labrieville, Quebec, pluton
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 February 1995
American Mineralogist (1995) 80 (1-2): 144–161.
...Brent E. Owens; Robert F. Dymek Abstract Newly discovered orthopyroxene and clinopyroxene megacrysts (OPMs and CPMs) in the Labrieville massif provide additional constraints on megacryst origins and their significance in massif anorthosite petrogenesis. Pyroxene megacrysts (~ 1–15 cm across) occur...
Journal Article
Fe-Ti-P-rich rocks and massif anorthosite; problems of interpretation illustrated from the Labrieville and St-Urbain plutons, Quebec
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 March 1992
The Canadian Mineralogist (1992) 30 (1): 163–190.
Journal Article
Mineralogy of the labrieville anorthosite, quebec
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 1966
American Mineralogist (1966) 51 (11-12): 1671–1711.
...Alfred T. Anderson, Jr. Abstract The Labrieville anorthosite massif is an example of crystallization differentiation in a plutonic environment. As in other St. Urbain-type anorthosites (characterized in particular by andesine anti-perthite and hemo-ilmenite), the lithologic sequence is: anorthosite...
Image
Simplified geologic sketch map of the Labrieville massif showing locations ...
in Mesoproterozoic lamprophyres in the Labrieville Massif, Quebec: clues to the origin of alkalic anorthosites?
> Canadian Journal of Earth Sciences
Published: 17 July 2002
Fig. 1. Simplified geologic sketch map of the Labrieville massif showing locations and orientations of lamprophyre dikes. Dike sizes are greatly exaggerated. The inset shows the location of the Labrieville massif (LBV) relative to the Lac-Saint-Jean (LSJ) and Saint-Urbain (STU) massifs. AMB
Image
Chondrite-normalized rare-earth element (REE) abundances in Labrieville lam...
in Mesoproterozoic lamprophyres in the Labrieville Massif, Quebec: clues to the origin of alkalic anorthosites?
> Canadian Journal of Earth Sciences
Published: 17 July 2002
Fig. 2. Chondrite-normalized rare-earth element (REE) abundances in Labrieville lamprophyres. Normalizing values are REE concentrations reported by Anders and Ebihara ( 1982 ) multiplied by 1.38, which represents a least-squares best-fit to the earlier chondrite composite data of Haskin et al
Journal Article
Rediscovery of the Mattawa Anorthosite Massif, Grenville Province, Quebec
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 07 December 2005
Canadian Journal of Earth Sciences (2005) 42 (10): 1699–1718.
...- to post-tectonic ∼1060–1010 Ma andesine anorthosite belt that includes the Château-Richer, St. Urbain, and Labrieville massifs. The dominant rock type at MAT is foliated andesine anorthosite or leuconorite, and orientations of foliations indicate that the pluton has the shape of a dome. MAT contains...
FIGURES
| View All (12)
Journal Article
Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite Gabbronorites) Associated with Massif Anorthosites
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 July 2001
Economic Geology (2001) 96 (4): 797–815.
... the Château-Richer, Labrieville, and St. Urbain massifs in Quebec; from the Roseland massif in Virginia; and from the Carthage massif in New York. Our data set includes X-ray fluorescence (XRF) and instrumental neutron activation (INA) analyses of whole-rock samples, as well as electron-microprobe (EMP...
FIGURES
| View All (17)
Image
F ig 4. Plot of wt percent Fe 2 O 3 (T) versus parts per million Sc in who...
in Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite
Gabbronorites) Associated with Massif Anorthosites
> Economic Geology
Published: 01 July 2001
F ig 4. Plot of wt percent Fe 2 O 3 (T) versus parts per
million Sc in whole-rock samples of nelsonite and oxide-apatite gabbronorite.
Symbols for nelsonites are explained in Figure 3 . Symbols for oxide-apatite
gabbronorites are the following: STU = St. Urbain, LBV-I = Labrieville-inner,
LBV-O
Image
F ig . 1. Photomicrographs illustrating textures of nelsonites (plane-polar...
in Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite
Gabbronorites) Associated with Massif Anorthosites
> Economic Geology
Published: 01 July 2001
F ig . 1. Photomicrographs illustrating textures of nelsonites (plane-polarized
light; each photograph covers an area of approximately 2 cm ×
3 cm; white = apatite, dark = Fe-Ti oxide). A. St. Urbain–Bignell
(sample STU85-692). B. Labrieville (sample LV88-116B). C. Roseland (sample
RLD95-960). Note
Image
F ig . 2. Photomicrographs illustrating textures of oxide-apatite gabbronor...
in Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite
Gabbronorites) Associated with Massif Anorthosites
> Economic Geology
Published: 01 July 2001
F ig . 2. Photomicrographs illustrating textures of oxide-apatite gabbronorites
(plane-polarized light; each photograph covers an area of approximately 2 cm ×
3 cm; black = Fe-Ti oxide, gray = pyroxene, white = plagioclase + apatite). A.
St. Urbain (CHV80-205). B. Labrieville–inner
(LV87-071). C
Image
F ig . 10. Chondrite-normalized REE plots for apatites from (A) St. Urbain,...
in Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite
Gabbronorites) Associated with Massif Anorthosites
> Economic Geology
Published: 01 July 2001
F ig . 10. Chondrite-normalized REE plots for apatites from (A) St. Urbain, (B) Labrieville, and (C) Roseland. OAGN = oxide-apatite gabbronorites.
Image
F ig . 14. Calculated REE patterns for melts in equilibrium with apatite fr...
in Petrogenesis of Apatite-Rich Rocks (Nelsonites and Oxide-Apatite
Gabbronorites) Associated with Massif Anorthosites
> Economic Geology
Published: 01 July 2001
F ig . 14. Calculated REE patterns for melts in equilibrium with apatite from
St. Urbain, Labrieville, and Roseland. D-values are taken from Roelandts and
Duchesne (1978). OAGN = oxide-apatite gabbronorites.
Journal Article
Temporal evolution and nature of Ti–Fe–P mineralization in the anorthosite–mangerite– charnockite–granite (AMCG) suites of the south-central Grenville Province, Saguenay – Lac St. Jean area, Quebec, Canada ,
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 28 November 2005
Canadian Journal of Earth Sciences (2005) 42 (10): 1865–1880.
...-type Lac St. Jean Anorthositic Suite, ( iii ) a 1082–1045 Ma unnamed plutonic suite, and ( iv ) the 1020–1008 Ma andesine-type Valin Anorthositic Suite. The Valin Anorthositic Suite includes the 1016 ± 2 Ma andesine-type Mattawa Anorthosite, the 1010–1008 Ma andesine-type Labrieville Alkalic...
FIGURES
| View All (5)
Journal Article
Comparative Petrology of the Montpelier and Roseland Potassic Anorthosites, Virginia
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 November 2016
The Canadian Mineralogist (2016) 54 (6): 1563–1593.
... in similarly young, alkalic anorthosites in the Grenville Province of Québec ( e.g ., St-Urbain, Labrieville, Château-Richer, Mattawa). Such differences indicate that the Virginia anorthosites crystallized under low f O 2 conditions compared to their Québec counterparts, despite higher silica activity. We...
FIGURES
| View All (19)
Image
Chondrite-normalized REE plot for Montpelier and Roseland samples. Data for...
in Comparative Petrology of the Montpelier and Roseland Potassic Anorthosites, Virginia
> The Canadian Mineralogist
Published: 01 November 2016
Fig. 12. Chondrite-normalized REE plot for Montpelier and Roseland samples. Data for Roseland from Owens & Dymek (1999) . Also shown for comparison is a field for anorthosites from the Labrieville, Québec massif ( Owens & Dymek 2001 ). Normalizing values from Boynton (1984) .
Image
Whole-rock normative feldspar compositions for Montpelier (A) and Roseland ...
in Comparative Petrology of the Montpelier and Roseland Potassic Anorthosites, Virginia
> The Canadian Mineralogist
Published: 01 November 2016
Fig. 13. Whole-rock normative feldspar compositions for Montpelier (A) and Roseland (B), with compositions of Labrieville and St-Urbain plotted for comparison (massive and gneissic varieties at Montpelier are not distinguished on A). Isotherms calculated at 5 kb using the SOLVCALC program of Wen
Image
Schematic representation of the system FeO–Fe 2 O 3 –TiO 2 illustrating co...
in Comparative Petrology of the Montpelier and Roseland Potassic Anorthosites, Virginia
> The Canadian Mineralogist
Published: 01 November 2016
Fig. 18. Schematic representation of the system FeO–Fe 2 O 3 –TiO 2 illustrating compositions of the ilmenite + rutile assemblages at Montpelier and Roseland, and typical ilmenite ss compositions at St-Urbain and Labrieville. Also shown is the experimentally determined rutile + ilmenite ss
Image
Total intensity aeromagnetic map of the region shown in Fig. 2 . Warm colo...
in Rediscovery of the Mattawa Anorthosite Massif, Grenville Province, Quebec
> Canadian Journal of Earth Sciences
Published: 07 December 2005
Fig. 3. Total intensity aeromagnetic map of the region shown in Fig. 2 . Warm colors (red, purple) indicate high intensity; cool colors (pale green, blue) indicate lower intensity. c and b, core and border zones at Mattawa, respectively; LBV, Labrieville Anorthosite Massif; MAT, Mattawa
Image
Various whole-rock comparisons between Montpelier and Roseland, and the St-...
in Comparative Petrology of the Montpelier and Roseland Potassic Anorthosites, Virginia
> The Canadian Mineralogist
Published: 01 November 2016
Fig. 17. Various whole-rock comparisons between Montpelier and Roseland, and the St-Urbain and Labrieville, Québec, anorthosites. (A) wt.% K 2 O versus wt.% Na 2 O; (B) wt.% K 2 O versus ppm Ba; (C) wt.% K 2 O versus ppm Rb; and (D) ppm Sr versus ppm Ba.
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