- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Canada
-
Eastern Canada
-
Quebec
-
Abitibi County Quebec (2)
-
-
-
Western Canada
-
Athabasca Basin (1)
-
British Columbia
-
Guichon Creek Batholith (1)
-
-
Saskatchewan (1)
-
-
-
North America
-
Canadian Shield
-
Superior Province
-
Abitibi Belt (1)
-
Pontiac Subprovince (1)
-
-
-
-
-
commodities
-
metal ores
-
copper ores (1)
-
gold ores (4)
-
uranium ores (1)
-
-
mineral deposits, genesis (1)
-
mineral exploration (3)
-
-
geochronology methods
-
paleomagnetism (1)
-
-
geologic age
-
Precambrian
-
Archean
-
Neoarchean (1)
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
monzodiorite (1)
-
-
volcanic rocks (1)
-
-
-
metamorphic rocks
-
metamorphic rocks
-
schists
-
greenschist (1)
-
-
-
-
minerals
-
sulfides (1)
-
-
Primary terms
-
Canada
-
Eastern Canada
-
Quebec
-
Abitibi County Quebec (2)
-
-
-
Western Canada
-
Athabasca Basin (1)
-
British Columbia
-
Guichon Creek Batholith (1)
-
-
Saskatchewan (1)
-
-
-
faults (1)
-
foliation (1)
-
geophysical methods (3)
-
igneous rocks
-
plutonic rocks
-
monzodiorite (1)
-
-
volcanic rocks (1)
-
-
intrusions (1)
-
metal ores
-
copper ores (1)
-
gold ores (4)
-
uranium ores (1)
-
-
metamorphic rocks
-
schists
-
greenschist (1)
-
-
-
metamorphism (1)
-
metasomatism (1)
-
mineral deposits, genesis (1)
-
mineral exploration (3)
-
North America
-
Canadian Shield
-
Superior Province
-
Abitibi Belt (1)
-
Pontiac Subprovince (1)
-
-
-
-
paleomagnetism (1)
-
Precambrian
-
Archean
-
Neoarchean (1)
-
-
-
sedimentary rocks (1)
-
-
sedimentary rocks
-
sedimentary rocks (1)
-
Abstract The Malartic gold camp is located in the southern part of the Archean Superior Province and straddles the Larder Lake-Cadillac fault zone that is between the Abitibi and Pontiac subprovinces. It comprises the world-class Canadian Malartic deposit (25.91 Moz, including past production, reserves, and resources), and smaller gold deposits located along faults and shear zones in volcanic and metasedimentary rocks of the Abitibi subprovince. North of the Larder Lake-Cadillac fault zone, the Malartic camp includes 2714 to 2697 Ma volcanic rocks and ≤2687 Ma turbiditic sedimentary rocks overlain by ≤2679 to 2669 Ma polymictic conglomerate and sandstone of the Timiskaming Group. South of the fault, the Pontiac subprovince comprises ≤2685 Ma turbiditic graywacke and mudstone, and minor ultramafic to mafic volcanic rocks and iron formations of the Pontiac Group. These supracrustal rocks were metamorphosed at peak greenschist to lower amphibolite facies conditions at ~2660 to 2658 Ma, during D 2 compressive deformation, and are cut by a variety of postvolcanic intrusions ranging from ~2695 to 2640 Ma. The Canadian Malartic deposit encompasses several past underground operations and is currently mined as a low-grade, open-pit operation that accounts for about 80% of the past production and reserves in the camp. It dominantly consists of disseminated-stockwork replacement-style mineralization in greenschist facies sedimentary rocks of the Pontiac Group. The mineralized zones are spatially associated with the Sladen fault and ~2678 Ma subalkaline to alkaline porphyritic quartz monzodiorite and granodiorite. Field relationships and isotopic age data for ore-related vein minerals indicate that gold mineralization in the Canadian Malartic deposit occurred at ~2665 to 2660 Ma and was contemporaneous with syn- to late-D 2 peak metamorphism. The smaller deposits in the camp include auriferous disseminated-stockwork zones of the Camflo deposit (1.9 Moz) and quartz ± carbonate-pyrite veins and breccias (0.6 Moz) along faults in chemically and mechanically favorable rocks. The age of these deposits is poorly constrained, but ~2692 Ma postmineral dikes, and ~2625 Ma hydrothermal titanite and rutile from the Camflo deposit highlight a long and complex hydrothermal history. Crosscutting relationships and regional geochronological constraints suggest that an early episode of pre-Timiskaming mineralization occurred at >2692 Ma, shortly after the end of volcanism in the Malartic camp, and postmetamorphic fluid circulation may have contributed to concentration or remobilization of gold until ~2625 Ma. However, the bulk of the gold was concentrated in the Canadian Malartic deposit during the main phase of compressive deformation and peak regional metamorphism.