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Journal Article

Bastnaesite in fractures of the Eye-Dashwa lakes pluton, Atikokan, northwestern Ontario Available to Purchase

D. C. Kamineni, M. Bonardi
Published: 01 February 1983
The Canadian Mineralogist (1983) 21 (1): 115–119.
View PDF for article title, Bastnaesite in fractures of the <span class="search-highlight">Eye</span>-Dashwa <span class="search-highlight">lakes</span> <span class="search-highlight">pluton</span>, Atikokan, northwestern Ontario
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Journal Article

Fractures and fracture infillings of the Eye–Dashwa Lakes pluton, Atikokan, Ontario Free

Denver Stone, D. Choudari Kamineni
Published: 01 April 1982
Canadian Journal of Earth Sciences (1982) 19 (4): 789–803.
DOI: https://doi.org/10.1139/e82-066
...Denver Stone; D. Choudari Kamineni Abstract Fractures in the Eye–Dashwa pluton near Atikokan, Ontario can be subdivided on the basis of their filling materials. These materials include aplite, epidote, chlorite, and gypsum–carbonate–clay, listed in order of decreasing age established from...
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Journal Article

Palygorskite from fracture zones in the Eye-Dashwa Lakes granitic pluton, Atikokan, Ontario Available to Purchase

D. Choudari Kamineni, Lise Y. Griffault, Robert Kerrich
Published: 01 March 1993
The Canadian Mineralogist (1993) 31 (1): 173–183.
View PDF for article title, Palygorskite from fracture zones in the <span class="search-highlight">Eye</span>-Dashwa <span class="search-highlight">Lakes</span> granitic <span class="search-highlight">pluton</span>, Atikokan, Ontario
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Journal Article

Characteristics of radionuclide sorption on fracture-filling minerals in the Eye-Dashwa Lakes Pluton, Atikokan, Ontario Available to Purchase

D. C. Kamineni, T. T. Vandergraaf, K. V. Ticknor
Published: 01 November 1983
The Canadian Mineralogist (1983) 21 (4): 625–636.
View PDF for article title, Characteristics of radionuclide sorption on fracture-filling minerals in the <span class="search-highlight">Eye</span>-Dashwa <span class="search-highlight">Lakes</span> <span class="search-highlight">Pluton</span>, Atikokan, Ontario
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Journal Article

Mapping of apparent magnetic susceptibility and the identification of fractures: A case study from the Eye-Dashwa Lakes pluton, Atikokan, Ontario Available to Purchase

Madeline D. Lee, William A. Morris, Hernan A. Ugalde
Journal: Geophysics
Published: 09 June 2010
Geophysics (2010) 75 (3): B147–B156.
DOI: https://doi.org/10.1190/1.3427636
...) surveys, which was done in this study for the Eye-Dashwa Lakes pluton near Atikokan, Ontario. Susceptibility logs of cores directly link alteration to systematic changes in the amount and composition of magnetic minerals. The surficial distribution of alteration zones was originally estimated from...
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View PDF for article title, Mapping of apparent magnetic susceptibility and the identification of fractures: A case study from the <span class="search-highlight">Eye</span>-Dashwa <span class="search-highlight">Lakes</span> <span class="search-highlight">pluton</span>, Atikokan, Ontario
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Image
(a) Aerial photograph of the Eye-Dashwa Lakes pluton area. The primary regional scale trend is visible (northwest-southeast) along with a secondary othogonal trend (northeast-southwest). The red box indicates the study site. (b) Diurnally corrected and leveled-ground total-magnetic-intensity data set with survey-line layout. The TMI data set was terrain-corrected for the source-sensor distance (2m); however, the effects were negligable. (c) Known topography of the study site derived from the TMI survey.

(a) Aerial photograph of the Eye-Dashwa Lakes pluton area. The primary regi... Available to Purchase

Published: 09 June 2010
Figure 1. (a) Aerial photograph of the Eye-Dashwa Lakes pluton area. The primary regional scale trend is visible (northwest-southeast) along with a secondary othogonal trend (northeast-southwest). The red box indicates the study site. (b) Diurnally corrected and leveled-ground total-magnetic
Journal Article

Interpretation of magnetic susceptibility: a new approach to geophysical evaluation of the degree of rock alteration Free

P. Lapointe, W. A. Morris, K. L. Harding
Published: 01 March 1986
Canadian Journal of Earth Sciences (1986) 23 (3): 393–401.
DOI: https://doi.org/10.1139/e86-041
...P. Lapointe; W. A. Morris; K. L. Harding Abstract Magnetic susceptibility measurements on cores from boreholes in the Eye–Dashwa lakes pluton, an Archean granitic pluton near Atikokan, Ontario, give a quantitative evaluation of the alteration level of these rocks. The histogram of the 5406 magnetic...
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Journal Article

Magmatism, metamorphism and deformation at Hemlo, Ontario, and the timing of Au-Mo mineralization in the Golden Giant Mine Available to Purchase

Roger J. Kuhns, F. J. Sawkins, Emi Ito
Journal: Economic Geology
Published: 01 July 1994
Economic Geology (1994) 89 (4): 720–756.
DOI: https://doi.org/10.2113/gsecongeo.89.4.720
...-alkalic granodioritic Cedar Creek stock and Cedar Lake pluton occur near the deposit. Feldspar porphyry sills and dikes generated from the stock and pluton cut the earlier porphyries, mineralized rocks, and many of the fabric elements. The Golden Giant rocks have been regionally metamorphosed...
View PDF for article title, Magmatism, metamorphism and deformation at Hemlo, Ontario, and the timing of Au-Mo mineralization in the Golden Giant Mine
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Photographs of representative felsic and mafic volcanic, high-level intrusive, and plutonic rocks in the Big Campbell (a–f) and Cleaver Lake (g, h) thrust sheets, Finlayson Lake district. (a) 17MM-005: Grass Lakes plutonic suite: foliated and deformed, massive plagioclase feldspar-quartz granodiorite; (b) 18MM-105: massive, equigranular, moderately foliated granodiorite; (c) 17MM-061: Grass Lakes plutonic suite, high-level quartz-orthoclase feldspar porphyritic rock with rare blue quartz eyes that cuts Kudz Ze Kayah deposit footwall; (d) 18MC015/96DM-065: North Lakes intrusion, fine to medium-grained gabbro to diorite intruded by Grass Lakes plutonic suite granitic dikes; (e) 18MM-132: Kudz Ze Kayah formation (Krakatoa zone), high-level chlorite-altered mafic dike in the Krakatoa deposit footwall; (f) 17MM-054: Wind Lake formation, deformed and altered pillow basalts with possible outer selvage; (g) P99-24: Simpson Range plutonic suite, equigranular hornblende granodiorite; (h) 18MM-108: Cleaver Lake formation, high-level quartz-porphyritic intrusive rock. Hammer (35 cm) for scale in (d) and pen (10 cm) for scale in (f). Qtz = quartz; Or = orthoclase; Pl = plagioclase; Hbl = hornblende.

Photographs of representative felsic and mafic volcanic, high-level intrusi... Open Access

Published: 20 June 2022
granodiorite; (b) 18MM-105: massive, equigranular, moderately foliated granodiorite; (c) 17MM-061: Grass Lakes plutonic suite, high-level quartz-orthoclase feldspar porphyritic rock with rare blue quartz eyes that cuts Kudz Ze Kayah deposit footwall; (d) 18MC015/96DM-065: North Lakes intrusion, fine to medium
Image
Estimated δD and δ18O of fluids involved in specified events in the evolution of the southern Superior Province. Reference fields or lines are magmatic water, metamorphic water, ocean water (0W), the meteoric water line (MWL), Alberta and Gulf Coast oilfield brines, and lines for clays at specified temperatures in equilibrium with ambient meteoric water. (A) Archean: 0W, Archean ocean water; involved in regional alteration of volcanic rocks; 1, magmatic water from syntectonic tonalitic granitoid rocks; 2, hydrothermal ore-fluids of lode gold deposits; 3, meteoric water involvement in Eldridge gold deposit, Lac Flavrion pluton, Noranda; citrine-selenite and hematitic overprinting of Larder Lake–Cadillac deformation fault in the Macassa mine, unknown age; 4, fluids for muscovite epidote fractures, Eye-Dashwa lake pluton; 5, magmatic fluids for Pontiac S-type granite Li, Mo, U mineralization; 6, Larder Lake Cadillac deformation zone reactivation at 2510 Ma. (B) Proterozoic and Phanerozoic fluid activity: 7, Paleoproterozoic sedimentary formation brines, locally involved in Ag, Co, -sulpharsenide deposits; 8, adularia vein systems in Eye-Dashwa Lakes granite; 9, hematite chlorite overprinting of 4; 10, brines that alone plot to the left of the MWL from specified mining districts in the Shield; 11, Quaternary glacial waters involved in δD-shifting of Archean serpentines and clays in Quaternary fracture systems; 12, ambient ground waters at Atikokan and the Underground Research Laboratory (URL) that are in isotopic equilibrium with clays of 11.

Estimated δD and δ 18 O of fluids involved in specified events in the evolu... Available to Purchase

Published: 02 April 2000
in Eldridge gold deposit, Lac Flavrion pluton, Noranda; citrine-selenite and hematitic overprinting of Larder Lake–Cadillac deformation fault in the Macassa mine, unknown age; 4, fluids for muscovite epidote fractures, Eye-Dashwa lake pluton; 5, magmatic fluids for Pontiac S-type granite Li, Mo, U
Image
Comparison of initial Nd, Pb, and Sr isotopic values from a variety of post-2.7 Ga potassic and ultrapotassic igneous suites across the southern Superior Province. Data for the Falcon Island pluton (FP); Roaring River pluton (RP) (Stern and Hanson 1991); Eye-Dashwa pluton (EP) (Henry et al. 1998); Sturgeon Lake pluton (SP), Poohbah Lake pluton (PP), Otto pluton (OP) (Ben Othman et al. 1990; Tilton and Bell 1994), Lac Shortt (LC) and Dolodau (DC) carbonatite dykes (Tilton and Bell 1994). The pre-2.7 Ga depleted mantle field (DM) derived from data on the Mulcahy intrusion (Morrison et al. 1985; Carignan et al. 1995); Abitibi subprovince mineral separates and whole-rock analyses (Machado et al. 1986; Lehaye and Arndt 1995); and Noranda and Matagami whole-rock volcanic and galena analyses (Vervoort et al. 1994). Old crustal field (CC) derived from plutonic suites from the Winnipeg River subprovince (Gower et al. 1983; Corfu 1988, Beakhouse and McNutt 1991); the Opatica and Pontiac subprovinces (Carignan et al. 1993; Bédard and Ludden 1997); and the Quetico subprovince (Henry et al. 1998).

Comparison of initial Nd, Pb, and Sr isotopic values from a variety of post... Available to Purchase

Published: 10 November 2000
Fig. 5. Comparison of initial Nd, Pb, and Sr isotopic values from a variety of post-2.7 Ga potassic and ultrapotassic igneous suites across the southern Superior Province. Data for the Falcon Island pluton (FP); Roaring River pluton (RP) ( Stern and Hanson 1991 ); Eye-Dashwa pluton (EP) ( Henry
Book Chapter

U-Pb Geochronology of Ordovician Plutonism, Bathurst Mining Camp, New Brunswick Available to Purchase

Author(s)
V. J. McNicoll, J. B. Whalen, R. A. Stern
Book: Massive Sulfide Deposits of the Bathurst Mining Camp, New Brunswick, and Northern Maine
Series: Economic Geology Monograph Series
Publisher: Society of Economic Geologists
Published: 01 January 2003
DOI: 10.5382/Mono.11.11
EISBN: 9781629490069
..., SLF = Spruce Lake Formation. Histograms of silica (wt %) for Tetagouche Group calc-alkalic felsic volcanic formations (b) and Ordovician granitoid plutons (d). Fig. 5. Y/TiO 2 vs. Zr/TiO 2 plot for northern and central Ordovician granitoid plutons for which good geochronologic ages exist...
Abstract
View PDF for content titled, U-Pb Geochronology of Ordovician <span class="search-highlight">Plutonism</span>, Bathurst Mining Camp, New Brunswick
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Abstract Thermal ionization mass spectrometry (TIMS) and SHRIMP U-Pb zircon dating techniques were employed in this study to obtain intrusion ages and information on xenocrystic zircon from granitoid rocks of the Bathurst Mining Camp, New Brunswick. Emplacement ages were obtained for the South Little River Lake (470 ± 3 Ma), Sweat Hill (476 ± 20 Ma), Mullin Stream Lake (465 ± 3 Ma), Serpentine River (466 ± 2 Ma (min)), and South Renous River (469 ± 7 Ma) plutons. Published U-Pb ages for calc-alkalic felsic volcanic formations of the Bathurst Mining Camp indicate that volcanism occurred between 472 and 466 Ma; units hosting the volcanogenic massive sulfide (VMS) deposits are ca. 472 Ma. Within analytical error, our ages for the South Little River and Sweat Hill plutons, along with previously published ages for the Popple Depot (474 ± 4 Ma), Meridian Brook (472.3 ± 4 Ma), and Sweat Hill plutons (476 Ma) overlap VMS deposit formation. The Mullin Stream Lake and Serpentine River plutons are most likely younger than the VMS-related volcanic formations.

Journal Article

The role of fluids during formation and evolution of the southern Superior Province lithosphere: an overview Available to Purchase

Robert Kerrich, John Ludden
Published: 02 April 2000
Canadian Journal of Earth Sciences (2000) 37 (2-3): 135–164.
DOI: https://doi.org/10.1139/e99-098
... in Eldridge gold deposit, Lac Flavrion pluton, Noranda; citrine-selenite and hematitic overprinting of Larder Lake–Cadillac deformation fault in the Macassa mine, unknown age; 4, fluids for muscovite epidote fractures, Eye-Dashwa lake pluton; 5, magmatic fluids for Pontiac S-type granite Li, Mo, U...
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View PDF for article title, The role of fluids during formation and evolution of the southern Superior Province lithosphere: an overview
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Journal Article

ZTEM and VTEM airborne EM and magnetic results over the Lalor copper‐gold volcanogenic massive sulfide deposit region, near Snow Lake, Manitoba Available to Purchase

Jean M. Legault, Geoffrey Plastow, Shengkai Zhao, Nasreddine Bournas, Alexander Prikhodko, Marta Orta
Journal: Interpretation
Published: 22 April 2015
Interpretation (2015) 3 (2): SL83–SL94.
DOI: https://doi.org/10.1190/INT-2014-0245.1
... ore bodies, and its top is interpreted to lie below a décollement (fault) contact with overturned hanging wall rocks at the surface. The Chisel Lake pluton is a nearby (Figure  3 ) late 1.8     km × 9.8     km layered ultramafic intrusion that truncates the Chisel Lake VMS deposit...
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View PDF for article title, ZTEM and VTEM airborne EM and magnetic results over the Lalor copper‐gold volcanogenic massive sulfide deposit region, near Snow <span class="search-highlight">Lake</span>, Manitoba
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Journal Article

Early Paleozoic collisional structures in the modern elevation pattern of the Olkhon region (Baikal rift system) Available to Purchase

T.M. Skovitina, V.S. Fedorovsky
Published: 01 September 2007
Russ. Geol. Geophys. (2007) 48 (9): 697–706.
DOI: https://doi.org/10.1016/j.rgg.2006.12.013
... Cenozoic continental rift. Why the elevation pattern, developing just before our eyes, would retain numerous features of the prerift geological history and highlight the basement structure in the area that experienced extremely intense rifting responsible for the deepest basin of Lake Baikal? Answering...
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View PDF for article title, Early Paleozoic collisional structures in the modern elevation pattern of the Olkhon region (Baikal rift system)
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Journal Article

Microtexture and water content of alkali feldspar by Fourier-transform infrared microspectroscopy Available to Purchase

Satoshi Nakano, K. Makino, T. Eriguchi
Published: 01 October 2001
Mineralogical Magazine (2001) 65 (5): 675–683.
... of the San’yo granites in the inner zone of southwest Japan ( Ishihara, 1971 ). Their southern members around Lake Biwa have formed a huge ring complex (~40 × 50 km) related to the formation of the Koto cauldron ( Sawada and Itaya, 1994 ). The Yasu granite pluton (~3 × 10 km) is inside the ring complex...
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Journal Article

Nd and Pb isotopes from the Lake of the Woods greenstone belt, northwestern Ontario: implications for mantle evolution and the formation of crust in the southern Superior Province Available to Purchase

John A. Ayer, Jaroslav Dostal
Published: 10 November 2000
Canadian Journal of Earth Sciences (2000) 37 (12): 1677–1689.
DOI: https://doi.org/10.1139/e00-067
...Fig. 5. Comparison of initial Nd, Pb, and Sr isotopic values from a variety of post-2.7 Ga potassic and ultrapotassic igneous suites across the southern Superior Province. Data for the Falcon Island pluton (FP); Roaring River pluton (RP) ( Stern and Hanson 1991 ); Eye-Dashwa pluton (EP) ( Henry...
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View PDF for article title, Nd and Pb isotopes from the <span class="search-highlight">Lake</span> of the Woods greenstone belt, northwestern Ontario: implications for mantle evolution and the formation of crust in the southern Superior Province
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Journal Article

A Review of Rare-Element (Li-Cs-Ta) Pegmatite Exploration Techniques for the Superior Province, Canada, and Large Worldwide Tantalum Deposits Available to Purchase

JULIE B. SELWAY, FREDERICK W. BREAKS, ANDREW G. TINDLE
Published: 01 January 2005
Exploration and Mining Geology (2005) 14 (1-4): 1–30.
DOI: https://doi.org/10.2113/gsemg.14.1-4.1
... geochronology. The age of the Separation Rapids pluton is 2644 ± 2 Ma (U-Pb on monazite; Labri et al., 1999 ), which is similar to a 2640 ± 7 Ma date obtained for the Greer Lake fertile granite, Manitoba (U-Pb on etched tantalite; Baadsgaard & Černý, 1993 ) within the same Bird River-Separation Rapids...
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View PDF for article title, A Review of Rare-Element (Li-Cs-Ta) Pegmatite Exploration Techniques for the Superior Province, Canada, and Large Worldwide Tantalum Deposits
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Journal Article

Terrane assemblage of the Leinster Massif, SE Ireland, during the Lower Palaeozoic Available to Purchase

M. D. MAX, A. J. BARBER, J. MARTINEZ
Published: 01 December 1990
Journal of the Geological Society (1990) 147 (6): 1035–1050.
DOI: https://doi.org/10.1144/gsjgs.147.6.1035
... Ma) and Leinster (404 Ma) stitching plutons. Fault movement ceased before the deposition of Late Devonian and Carboniferous sediments on a linking unconformity across the massif. 3 Present address: Naval Research Laboratory, Code 5110, Washington DC 203/5-5000, USA 18 10 1988 16...
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Book Chapter

Structural geology of the subprovince boundaries in the Archean Superior Province of northern Minnesota and adjacent Ontario Available to Purchase

Author(s)
Robert L. Bauer, Dyanna M. Czeck, Peter J. Hudleston, Basil Tikoff
Book: Archean to Anthropocene: Field Guides to the Geology of the Mid-Continent of North America
Series: GSA Field Guide
Publisher: Geological Society of America
Published: 01 January 2011
DOI: 10.1130/2011.0024(10)
EISBN: 9780813756240
... central) produced by dextral shear. Figure 22. AMS results from the Burntside Lake pluton, shown in hemisphere, equal-area stereonet projections. (A) Pole to field foliations (n = 102). (B) Field lineations (n = 6). (C) Pole to magnetic foliation (n = 39). (D) Magnetic lineation (n = 39...
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ABSTRACT The geometric, kinematic, and deformational features along the subprovince boundaries of the Archean Superior Province are keys to understanding the tectonic amalgamation of the province. This field trip investigates the structural geology along two of the subprovince boundaries—the Wabigoon-Quetico and Quetico-Vermilion—of the Superior Craton. These boundaries separate the relatively high-grade gneisses of the Quetico Belt from typical low-grade granite-greenstone terranes to its north (Wabigoon) and south (Wawa). Both boundaries are characterized by different styles of transpressional deformation and strike-slip tectonism. Along the Wabigoon-Quetico boundary, deformation is recorded by a variety of structures controlled by competence contrast of heterogeneous lithologies at a variety of scales: from weak greenstones surrounding more competent gneiss domes to deformed polymictic conglomerates. Along the Quetico-Vermilion boundary, we will emphasize the role of plutonism and pluton geometry on subsequent deformation. Lastly, we characterize multiple deformation episodes in the Vermilion district in Minnesota.