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NARROW
Format
Article Type
Journal
Publisher
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
-
Arctic region (1)
-
Asia
-
Far East
-
China
-
Xizang China
-
Gangdese Belt (2)
-
Lhasa Block (1)
-
-
-
-
-
Australasia
-
Australia
-
Tasmania Australia (1)
-
-
New Zealand
-
Otago Schist (1)
-
-
-
Canada
-
Arctic Archipelago (1)
-
Cassiar Mountains (2)
-
Eastern Canada
-
Baffin Island (1)
-
Meguma Terrane (1)
-
Ontario (1)
-
Quebec (2)
-
-
Nunavut
-
Baffin Island (1)
-
-
Stikinia Terrane (2)
-
Ungava (1)
-
Western Canada
-
British Columbia
-
Queen Charlotte Islands (1)
-
Vancouver Island (1)
-
-
Canadian Cordillera (6)
-
Canadian Rocky Mountains (1)
-
Northwest Territories (1)
-
Selwyn Basin (1)
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Yukon Territory
-
Klondike (1)
-
Whitehorse Yukon Territory (1)
-
-
-
-
Europe
-
Southern Europe
-
Iberian Peninsula
-
Spain
-
Andalusia Spain
-
Huelva Spain (1)
-
-
-
-
-
-
Mexico
-
Guerrero Terrane (2)
-
-
North America
-
Canadian Shield
-
Slave Province (2)
-
Superior Province
-
Abitibi Belt (1)
-
-
-
North American Cordillera
-
Canadian Cordillera (6)
-
-
Rocky Mountains
-
Canadian Rocky Mountains (1)
-
-
Slide Mountain Terrane (1)
-
Tintina Fault (2)
-
Western Canada Sedimentary Basin (1)
-
Yukon-Tanana Terrane (8)
-
Yukon-Tanana Upland (2)
-
-
Pacific Ocean (1)
-
Quesnel Lake (1)
-
Quesnellia Terrane (2)
-
South America
-
Argentina (2)
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Chile
-
Aisen del General Carlos Ibanez del Campo Chile
-
Aisen Chile (1)
-
-
-
Patagonia (1)
-
Peru (2)
-
-
South Island (1)
-
United States
-
Alaska
-
Alaska Peninsula (1)
-
Alaska Range (1)
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Big Delta Quadrangle (1)
-
Healy Quadrangle (1)
-
-
-
-
commodities
-
barite deposits (1)
-
gems (3)
-
metal ores
-
base metals (3)
-
cobalt ores (1)
-
copper ores (9)
-
gold ores (17)
-
lead ores (3)
-
lead-zinc deposits (3)
-
molybdenum ores (3)
-
polymetallic ores (3)
-
silver ores (6)
-
zinc ores (3)
-
-
mineral deposits, genesis (16)
-
mineral exploration (5)
-
-
elements, isotopes
-
boron
-
B-11/B-10 (1)
-
-
chemical ratios (1)
-
hydrogen
-
D/H (3)
-
-
isotope ratios (15)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
Rb-87/Sr-86 (1)
-
Sm-147/Nd-144 (4)
-
-
stable isotopes
-
B-11/B-10 (1)
-
D/H (3)
-
Nd-144/Nd-143 (7)
-
O-18/O-16 (4)
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (1)
-
Pb-208/Pb-206 (1)
-
Rb-87/Sr-86 (1)
-
S-34/S-32 (1)
-
Sm-147/Nd-144 (4)
-
Sr-87/Sr-86 (1)
-
-
-
metals
-
alkali metals
-
rubidium
-
Rb-87/Sr-86 (1)
-
-
-
alkaline earth metals
-
strontium
-
Rb-87/Sr-86 (1)
-
Sr-87/Sr-86 (1)
-
-
-
lead
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (1)
-
Pb-208/Pb-206 (1)
-
-
precious metals (2)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (7)
-
Sm-147/Nd-144 (4)
-
-
samarium
-
Sm-147/Nd-144 (4)
-
-
-
-
oxygen
-
O-18/O-16 (4)
-
-
sulfur
-
S-34/S-32 (1)
-
-
-
fossils
-
Chordata
-
Vertebrata (1)
-
-
Invertebrata
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
-
microfossils
-
Conodonta (1)
-
-
Plantae (1)
-
-
geochronology methods
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Ar/Ar (13)
-
K/Ar (2)
-
paleomagnetism (2)
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Pb/Pb (5)
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Rb/Sr (2)
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Re/Os (1)
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Sm/Nd (1)
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U/Pb (33)
-
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geologic age
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Cenozoic
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Tertiary
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Neogene
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Miocene
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middle Miocene (1)
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upper Miocene (1)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene (4)
-
Oligocene
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upper Oligocene (1)
-
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
-
Middle Cretaceous (2)
-
Upper Cretaceous (1)
-
-
Jurassic
-
Bonanza Group (1)
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (1)
-
Talkeetna Formation (1)
-
-
Middle Jurassic (1)
-
Upper Jurassic (1)
-
-
Triassic
-
Upper Triassic (2)
-
-
-
Paleozoic
-
Cambrian
-
Middle Cambrian (1)
-
Mount Read Volcanics (1)
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (1)
-
-
Mississippian
-
Lower Mississippian (1)
-
-
-
Devonian
-
Upper Devonian (4)
-
-
lower Paleozoic (1)
-
middle Paleozoic (2)
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Permian (3)
-
upper Paleozoic (1)
-
-
Phanerozoic (1)
-
Precambrian
-
Archean
-
Neoarchean (2)
-
Yellowknife Group (1)
-
-
Sleepy Dragon Complex (1)
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic (1)
-
Neoproterozoic (1)
-
Paleoproterozoic (5)
-
Windermere System (2)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
diabase (2)
-
diorites
-
tonalite (1)
-
-
granites (4)
-
monzonites (2)
-
quartz monzonite (1)
-
syenites (1)
-
-
porphyry (1)
-
volcanic rocks
-
andesites
-
boninite (1)
-
-
basalts
-
alkali basalts (1)
-
mid-ocean ridge basalts (1)
-
ocean-island basalts (1)
-
-
pyroclastics
-
tuff (3)
-
-
rhyolites (3)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses
-
orthogneiss (2)
-
paragneiss (1)
-
-
granulites (1)
-
marbles (1)
-
metaigneous rocks
-
metabasalt (1)
-
-
metasedimentary rocks
-
paragneiss (1)
-
-
metavolcanic rocks (4)
-
quartzites (1)
-
schists
-
greenstone (1)
-
-
-
-
minerals
-
halides
-
fluorides
-
fluorite (1)
-
-
-
oxides
-
baddeleyite (1)
-
corundum (1)
-
magnetite (1)
-
sapphire (1)
-
-
phosphates
-
monazite (1)
-
-
silicates
-
framework silicates
-
feldspar group
-
alkali feldspar
-
adularia (2)
-
K-feldspar (1)
-
orthoclase (1)
-
-
-
nepheline group
-
nepheline (1)
-
-
scapolite group
-
scapolite (1)
-
-
-
orthosilicates
-
nesosilicates
-
titanite group
-
titanite (2)
-
-
zircon group
-
zircon (28)
-
-
-
-
ring silicates
-
aquamarine (1)
-
beryl (2)
-
emerald (1)
-
tourmaline group (1)
-
-
sheet silicates
-
clay minerals
-
kaolinite (1)
-
-
mica group
-
biotite (4)
-
muscovite (6)
-
-
sericite (1)
-
-
-
sulfates
-
alunite (2)
-
-
sulfides (1)
-
-
Primary terms
-
absolute age (37)
-
Arctic region (1)
-
Asia
-
Far East
-
China
-
Xizang China
-
Gangdese Belt (2)
-
Lhasa Block (1)
-
-
-
-
-
associations (1)
-
Australasia
-
Australia
-
Tasmania Australia (1)
-
-
New Zealand
-
Otago Schist (1)
-
-
-
barite deposits (1)
-
boron
-
B-11/B-10 (1)
-
-
Canada
-
Arctic Archipelago (1)
-
Cassiar Mountains (2)
-
Eastern Canada
-
Baffin Island (1)
-
Meguma Terrane (1)
-
Ontario (1)
-
Quebec (2)
-
-
Nunavut
-
Baffin Island (1)
-
-
Stikinia Terrane (2)
-
Ungava (1)
-
Western Canada
-
British Columbia
-
Queen Charlotte Islands (1)
-
Vancouver Island (1)
-
-
Canadian Cordillera (6)
-
Canadian Rocky Mountains (1)
-
Northwest Territories (1)
-
Selwyn Basin (1)
-
Yukon Territory
-
Klondike (1)
-
Whitehorse Yukon Territory (1)
-
-
-
-
Cenozoic
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
upper Miocene (1)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene (4)
-
Oligocene
-
upper Oligocene (1)
-
-
-
-
-
Chordata
-
Vertebrata (1)
-
-
continental drift (2)
-
crust (6)
-
deformation (5)
-
diagenesis (1)
-
economic geology (1)
-
Europe
-
Southern Europe
-
Iberian Peninsula
-
Spain
-
Andalusia Spain
-
Huelva Spain (1)
-
-
-
-
-
-
faults (10)
-
folds (1)
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fractures (1)
-
gems (3)
-
geochemistry (17)
-
geochronology (4)
-
geophysical methods (1)
-
geosynclines (1)
-
heat flow (1)
-
hydrogen
-
D/H (3)
-
-
igneous rocks
-
plutonic rocks
-
diabase (2)
-
diorites
-
tonalite (1)
-
-
granites (4)
-
monzonites (2)
-
quartz monzonite (1)
-
syenites (1)
-
-
porphyry (1)
-
volcanic rocks
-
andesites
-
boninite (1)
-
-
basalts
-
alkali basalts (1)
-
mid-ocean ridge basalts (1)
-
ocean-island basalts (1)
-
-
pyroclastics
-
tuff (3)
-
-
rhyolites (3)
-
-
-
inclusions
-
fluid inclusions (5)
-
-
intrusions (24)
-
Invertebrata
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
Rb-87/Sr-86 (1)
-
Sm-147/Nd-144 (4)
-
-
stable isotopes
-
B-11/B-10 (1)
-
D/H (3)
-
Nd-144/Nd-143 (7)
-
O-18/O-16 (4)
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (1)
-
Pb-208/Pb-206 (1)
-
Rb-87/Sr-86 (1)
-
S-34/S-32 (1)
-
Sm-147/Nd-144 (4)
-
Sr-87/Sr-86 (1)
-
-
-
magmas (6)
-
mantle (2)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
-
Middle Cretaceous (2)
-
Upper Cretaceous (1)
-
-
Jurassic
-
Bonanza Group (1)
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (1)
-
Talkeetna Formation (1)
-
-
Middle Jurassic (1)
-
Upper Jurassic (1)
-
-
Triassic
-
Upper Triassic (2)
-
-
-
metal ores
-
base metals (3)
-
cobalt ores (1)
-
copper ores (9)
-
gold ores (17)
-
lead ores (3)
-
lead-zinc deposits (3)
-
molybdenum ores (3)
-
polymetallic ores (3)
-
silver ores (6)
-
zinc ores (3)
-
-
metals
-
alkali metals
-
rubidium
-
Rb-87/Sr-86 (1)
-
-
-
alkaline earth metals
-
strontium
-
Rb-87/Sr-86 (1)
-
Sr-87/Sr-86 (1)
-
-
-
lead
-
Pb-206/Pb-204 (3)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (2)
-
Pb-208/Pb-204 (1)
-
Pb-208/Pb-206 (1)
-
-
precious metals (2)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (7)
-
Sm-147/Nd-144 (4)
-
-
samarium
-
Sm-147/Nd-144 (4)
-
-
-
-
metamorphic rocks
-
gneisses
-
orthogneiss (2)
-
paragneiss (1)
-
-
granulites (1)
-
marbles (1)
-
metaigneous rocks
-
metabasalt (1)
-
-
metasedimentary rocks
-
paragneiss (1)
-
-
metavolcanic rocks (4)
-
quartzites (1)
-
schists
-
greenstone (1)
-
-
-
metamorphism (9)
-
metasomatism (3)
-
Mexico
-
Guerrero Terrane (2)
-
-
mineral deposits, genesis (16)
-
mineral exploration (5)
-
North America
-
Canadian Shield
-
Slave Province (2)
-
Superior Province
-
Abitibi Belt (1)
-
-
-
North American Cordillera
-
Canadian Cordillera (6)
-
-
Rocky Mountains
-
Canadian Rocky Mountains (1)
-
-
Slide Mountain Terrane (1)
-
Tintina Fault (2)
-
Western Canada Sedimentary Basin (1)
-
Yukon-Tanana Terrane (8)
-
Yukon-Tanana Upland (2)
-
-
orogeny (6)
-
oxygen
-
O-18/O-16 (4)
-
-
Pacific Ocean (1)
-
paleogeography (5)
-
paleomagnetism (2)
-
Paleozoic
-
Cambrian
-
Middle Cambrian (1)
-
Mount Read Volcanics (1)
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (1)
-
-
Mississippian
-
Lower Mississippian (1)
-
-
-
Devonian
-
Upper Devonian (4)
-
-
lower Paleozoic (1)
-
middle Paleozoic (2)
-
Permian (3)
-
upper Paleozoic (1)
-
-
paragenesis (1)
-
petrology (1)
-
Phanerozoic (1)
-
Plantae (1)
-
plate tectonics (7)
-
Precambrian
-
Archean
-
Neoarchean (2)
-
Yellowknife Group (1)
-
-
Sleepy Dragon Complex (1)
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic (1)
-
Neoproterozoic (1)
-
Paleoproterozoic (5)
-
Windermere System (2)
-
-
-
-
sea-floor spreading (2)
-
sedimentary rocks
-
clastic rocks
-
black shale (1)
-
sandstone (2)
-
shale (1)
-
-
-
sedimentary structures
-
planar bedding structures
-
imbrication (1)
-
-
-
South America
-
Argentina (2)
-
Chile
-
Aisen del General Carlos Ibanez del Campo Chile
-
Aisen Chile (1)
-
-
-
Patagonia (1)
-
Peru (2)
-
-
stratigraphy (1)
-
structural analysis (1)
-
sulfur
-
S-34/S-32 (1)
-
-
symposia (1)
-
tectonics (14)
-
United States
-
Alaska
-
Alaska Peninsula (1)
-
Alaska Range (1)
-
Big Delta Quadrangle (1)
-
Healy Quadrangle (1)
-
-
-
-
sedimentary rocks
-
sedimentary rocks
-
clastic rocks
-
black shale (1)
-
sandstone (2)
-
shale (1)
-
-
-
siliciclastics (1)
-
volcaniclastics (2)
-
-
sedimentary structures
-
sedimentary structures
-
planar bedding structures
-
imbrication (1)
-
-
-
-
sediments
-
siliciclastics (1)
-
volcaniclastics (2)
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
U–Pb geochronology, Nd–Sm geochemistry, structural setting, and tectonic significance of Late Devonian and Paleogene intrusions in northern Yukon and northeastern Alaska Available to Purchase
Detrital zircon geochronology of quartzose metasedimentary rocks from parautochthonous North America, east-central Alaska Open Access
Origin of Scapolite-hosted Sapphire (corundum) Near Kimmirut, Baffin Island, Nunavut, Canada Available to Purchase
Mesozoic magmatism and timing of epigenetic Pb-Zn-Ag mineralization in the western Fortymile mining district, east-central Alaska: Zircon U-Pb geochronology, whole-rock geochemistry, and Pb isotopes Open Access
High-Precision U-Pb Zircon Chronostratigraphy of the Mount Read Volcanic Belt in Western Tasmania, Australia: Implications for VHMS Deposit Formation Available to Purchase
Geology and Geochronology of the Xietongmen (Xiongcun) Cu-Au Porphyry District, Southern Tibet, China Available to Purchase
Extracting ore-deposit-controlling structures from aeromagnetic, gravimetric, topographic, and regional geologic data in western Yukon and eastern Alaska Available to Purchase
The Cerro Bayo District, Chilean Patagonia: Late Jurassic to Cretaceous Magmatism and Protracted History of Epithermal Ag-Au Mineralization Available to Purchase
Magmatic and Metallogenic Framework of West-Central Yukon and Eastern Alaska Available to Purchase
Abstract A magmatic and metallogenic framework for the northern Yukon-Tanana terrane of west-central Yukon and eastern Alaska is proposed, which contextualizes syngenetic, intrusion-related, and orogenic styles of mineralization in the region. The framework applies to bedrock gold and base metal enrichments in the Dawson Range, White Gold, Klondike, Sixtymile, and Fortymile districts, which are historically known for their placer gold endowment, but which host few significant bedrock mineral resources. New field and geochronological (U-Pb, 40 Ar/ 39 Ar, 187 Re/ 187 Os) data, along with contributions from exploration companies, provide the key constraints on this framework. Sedimentary exhalative Pb-Zn mineralization and porphyry-style Cu-Au mineralization are associated with Late Devonian to Early Mississippian (365-342 Ma) rocks of the Finlayson assemblage and Simpson Range plutonic suite, respectively—both of which formed in a continental arc built on pre-Late Devonian continental margin sediments (Snowcap assemblage) along the ancient Pacific margin of North America. By the Late Permian, these assemblages had rifted away from North America, and W-dipping subduction of the intervening Slide Mountain Ocean was initiated. Volcanogenic massive sulfide-style Pb-Zn-Cu-(Ag-Au) mineralization formed in subvolcanic to volcanic rocks of the Late Permian (269-253 Ma) Klondike arc assemblage that was built on the Devono-Mississippian arc. Together these assemblages make up the Yukon-Tanana terrane. Gold mineralization formed sparsely with syn- to postmetamorphic Late Permian (253-250 Ma) anatectic melts. Five metallogenic events are recognized that coincide with magmatic episodes superimposed on the Yukon-Tanana terrane: (1) Cu-Au mineralization formed during an Early Jurassic (200-179 Ma) pulse of magmatism and was accompanied by rapid crustal exhumation (e.g., Minto); (2) Au-mineralized breccia complexes, skarns, intermediate-sulfidation epithermal systems, and polymetallic veins are associated with mid-Cretaceous (115-98 Ma) magnetite-series arc magmas in the Dawson Range, whereas age-equivalent Au deposits in the back-arc region to the north are associated with ilmenite-series magmas (e.g., Pogo); (3) variably Cu and Au rich porphyry systems formed within the mid-Cretaceous arc in the early Late Cretaceous (79-72 Ma) (e.g., Casino, Nucleus-Revenue); (4) porphyry Mo and Cu systems and Ag-rich polymetallic veins, carbonate-replacement, and skarn bodies are temporally and spatially associated with NE-trending, sinistral oblique-extensional fault systems in the latest Cretaceous (72-67 Ma); and (5) examples of disseminated U, Cu-Pb-Ag skarn, and Au-Ag epithermal systems are associated with dominantly felsic but locally bimodal Paleocene-Eocene (60-55 Ma) magmatism, emplaced into zones of extension during early activity on the Tintina fault zone. At least two distinct orogenic Au-mineralizing events are recognized. Within a Middle to Late Jurassic hiatus in magmatism, gold mineralization formed at 163 to 155 Ma in brittle-ductile to brittle structures within sinistral fault zones (e.g., White Gold), high-angle reverse faults, and kink folds. A subsequent episode of mid-Cretaceous (96-92 Ma) orogenic gold mineralization formed in structures cutting Paleozoic metamorphic rocks and mid-Cretaceous granitoids (e.g., Moosehorn, Boulevard). Weathering and surficial preservation in this unglaciated region since the Pliocene resulted in economic placer gold endowments in the Klondike, Sixtymile, Fortymile, White Gold, and Dawson Range districts. The framework we describe for the magmatism and metallogeny of west-central Yukon and eastern Alaska provides a testable platform for regional exploration targeting and property-scale exploration in a region with demonstrated mineral potential.