Proterozoic low-sulfidation epithermal Au-Ag mineralization in the Mallery Lake area, Nunavut, Canada

Turner, William; Richards, Jeremy P.; Nesbitt, Bruce E.; Muehlenbachs, Karlis; Biczok, John

doi:10.1007/s001260100181

Cited by 20 publications

(15 citation statements)

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“…Older deposits are recognized where the host volcanic rocks are well preserved, including the Mesozoic deposits of South America and the Paleozoic deposits of Australia. Precambrian examples are known, but these deposits are considered small in terms of economic grade (Dubé et al, 1998;Hallberg, 1994;Turner et al, 2001;Huston et al, 2002Huston et al, , 2008. In the Pilbara, Huston et al (2002) documented vein textures, including colloform banding and bladed textures, associated with 2.75-Ga epithermal Au-Ag deposits in the Mallina basin.…”

Section: Implications For Epithermal Settingsmentioning

confidence: 96%

Early Archean Hot Springs above Epithermal Veins, North Pole, Western Australia: New Insights from Fluid Inclusion Microanalysis

Harris¹,

White²,

McPhie³

et al. 2009

Economic Geology

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Section: Implications For Epithermal Settingsmentioning

confidence: 96%

Early Archean Hot Springs above Epithermal Veins, North Pole, Western Australia: New Insights from Fluid Inclusion Microanalysis

Harris¹,

White²,

McPhie³

et al. 2009

Economic Geology

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“…4). These were studied by Turner (2000) and Turner et al (2001). The zones are mostly associated with Nueltin Granite, or the Pitz Formation, but some occur within the older Baker Lake Group.…”

Section: Economic Geologymentioning

confidence: 99%

The Kivalliq Igneous Suite: Anorogenic bimodal magmatism at 1.75Ga in the western Churchill Province, Canada

Peterson

Scott

LeCheminant

et al. 2015

Precambrian Research

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“…(b) consider the suite to have been the driver for low sulphidation epithermal gold and silver occurrences hosted by the Pitz Formation at Mallery Lake where Turner et al . () and Turner, Heaman, and Creaser () interpreted them as forming ca. 1.4 Ga.…”

Section: Discussionmentioning

confidence: 99%

“…As noted by Peterson et al (2015b), the Kivalliq Igneous Suite has additional economic potential, with precious metals in epithermal settings being of particular relevance to this study. Peterson et al (2015b) consider the suite to have been the driver for low sulphidation epithermal gold and silver occurrences hosted by the Pitz Formation at Mallery Lake where Turner et al (2001) and Turner, Heaman, and Creaser (2003) interpreted them as forming ca. 1.4 Ga.…”

Section: Discussionmentioning

confidence: 99%

Basement geology beneath the northeast Thelon Basin, Nunavut: insights from integrating new gravity, magnetic and geological data

Tschirhart

Jefferson

Morris

2016

Geophysical Prospecting

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Current models for unconformity‐associated uranium deposits predict fluid flow and ore deposition along reactivated faults in >1.76 Ga basement beneath Mesoproterozoic siliciclastic basins. In frontier regions such as the Thelon Basin in the Kivalliq region of Nunavut, little is known about the sub‐basin distribution of units and structures, making exploration targeting very tenuous. We constructed a geological map of the basement beneath the unconformity by extrapolating exposed features into the subsurface. The new map is constrained by detailed geological, geophysical, and rock property observations of outcrops adjacent to the basin and by aeromagnetic and gravity data over the geophysically transparent sedimentary basin. From rock property measurements, it is clear that the diverse magnetic and density characteristics of major rock packages provide quantitative three‐dimensional constraints. Gravity profiles forward modelled in four cross sections define broad synforms of the Amer Belt and Archean volcanic rocks that are consistent with the structural style outside the basin. Major lithotectonic entities beneath the unconformity include: supracrustal rocks of the Archean Woodburn Lake group and Marjorie Hills meta sedimentary gneiss and associated mixed granitoid and amphibolitic gneiss; the Amer Mylonite Zone and inferred mafic intrusions oriented parallel and sub‐parallel; other igneous intrusions of 2.6 Ga, 1.83 Ga, and 1.75 Ga vintage; and the <2.3 Ga to >1.84 Ga Amer Group. Four main brittle regional fault arrays (040°–060°, 075°–90°, 120°, and 150°) controlled development and preservation of the basin. The reactivated intersections of such faults along fertile basement units such as the Rumble assemblage, Marjorie Hills assemblage, Nueltin igneous rocks, and Pitz formation are the best targets for uranium exploration.

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Proterozoic low-sulfidation epithermal Au-Ag mineralization in the Mallery Lake area, Nunavut, Canada

Cited by 20 publications

References 0 publications

Early Archean Hot Springs above Epithermal Veins, North Pole, Western Australia: New Insights from Fluid Inclusion Microanalysis

Early Archean Hot Springs above Epithermal Veins, North Pole, Western Australia: New Insights from Fluid Inclusion Microanalysis

The Kivalliq Igneous Suite: Anorogenic bimodal magmatism at 1.75Ga in the western Churchill Province, Canada

Basement geology beneath the northeast Thelon Basin, Nunavut: insights from integrating new gravity, magnetic and geological data

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