AC
Aluchin
Paleozoic or older
Middle Paleozoic or older
Aluchin Metallogenic Belt of Podiform Cr Deposits (Middle Paleozoic or older), Central Part of Russian Northeast
AD
Anadyr
Cenozoic
Tertiary
early Tertiary
Anadyr Metallogenic Belt of Au Quartz Vein and Associated Deposits (early Tertiary), Eastern Part of Russian Northeast
AKY
Alaska Range and Yukon-Tanana Upland
Paleozoic
Devonian and Mississippian
Alaska Range and Yukon-Tanana Upland Metallogenic Belt of Kuroko Massive Sulfide Deposits (Devonian and Mississippian), Central and East-Central Alaska
AKY/DA
Dawson
Dawson Metallogenic Belt of Volcanogenic Pb-Zn-Cu Massive Sulfide and Sedimentary Exhalative Pb-Cu-Zn-Ba Deposits (Devonian and Mississippian), Northwestern Yukon Territory
AL
Algama
Mesozoic
Cretaceous
mid-Cretaceous
Algama Metallogenic Belt of Stratiform Zr Deposits (mid-Cretaceous), Northern Part of Russian Southeast
AN
Anvil
Cambrian to Silurian
Anvil Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag Deposits (Cambrian to Silurian), Southern Yukon Territory
ANN
Aniva-Nabil
Cretaceous or older
Early Cretaceous or older
Aniva-Nabil Metallogenic Belt of Volcanogenic Mn and Fe and Cyprus Massive Sulfide Deposits (Early Cretaceous or older), Sakhalin Island, Southeastern Part of Russian Far East
AP
Alaska Peninsula
Jurassic
Alaska Peninsula Metallogenic Belt of Granitic Magmatism Deposits (Jurassic), Alaska Peninsula
AP/SA_2
Southern Alaska
Mesozoic and Cenozoic
Cretaceous and Tertiary
Late Cretaceous and early Tertiary
Southern Alaska Metallogenic Belt of Granitic Magmatism Deposits (Late Cretaceous and early Tertiary), Central and Northern Part of Southern Alaska
AP_2
Alaska Peninsula and Aleutian Islands
middle Tertiary
Alaska Peninsula and Aleutian Islands Metallogenic Belt of Igneous Arc Deposits (middle Tertiary), Western-Southern Alaska
AR
Alaska Range
Triassic
Late Triassic
Alaska Range Metallogenic Belt of Besshi Massive Sulfide Deposits (Late Triassic), Central and Eastern-Southern Alaska
AR/TM_2
Talkeetna Mountains-Alaska Range
Early Jurassic
Talkeetna Mountains-Alaska Range Metallogenic Belt of Kuroko Massive Sulfide Deposits (Early Jurassic), Northern Part of Southern Alaska
AR_2
Ariadny
Late Jurassic
Ariadny Metallogenic Belt of Zoned Mafic-Ultramafic Ti Deposits (Late Jurassic), Southern Part of Russian Southeast
ARW
Pennsylvanian and Permian
Alaska Range-Wrangell Mountains Metallogenic Belt of Granitic Magmatism Deposits (Pennsylvanian and Permian), Central and Eastern-Southern Alaska
ARW/ESA
Eastern-Southern Alaska
Jurassic and Cretaceous
Late Jurassic and Early Cretaceous
Eastern-Southern Alaska Metallogenic Belt of Granitic Magmatism Deposits (Late Jurassic and Early Cretaceous), Eastern-Southern Alaska
AT
Adycha-Taryn
Cretaceous and early Tertiary
Adycha-Taryn Metallogenic Belt of Clastic Sediment-Hosted Sb-Au, Au-Ag Epithermal Vein, and Ag-Sb Polymetallic Vein Deposits (Cretaceous and early Tertiary), Western Part of Russian Northeast
AT_2
Arctic
Arctic Metallogenic Belt of Kuroko and Kipushi Massive Sulfide Deposits (Devonian and Mississippian), Northern Alaska
AX
Alexander
Alexander Metallogenic Belt of Volcanogenic Cu-Pb-Zn and Carbonate-Hosted Massive Sulfide Deposits (Triassic), Southeastern Alaska
AY
Allakh-Yun
Allakh-Yun Metallogenic Belt of Au Quartz Vein Deposits and Associated W-Sn Quartz Vein Deposits (Late Jurassic and Early Cretaceous), Southern Part of Russian Northeast
BA
Bayonne
Bayonne Metallogenic Belt of Porphyry Mo and Cu-Mo-W-Zn Skarn Deposits (mid-Cretaceous), Southern British Columbia
BA/CB
BE
Berezovka
Devonian
Late Devonian
Berezovka River Metallogenic Belt of KurokoMassive Sulfide Deposits (Late Devonian), Central Part of Russian Northeast
BI
Bilyakchan
Late Proterozoic
Bilyakchan Metallogenic Belt of Sediment-Hosted Cu and Basaltic Cu Deposits (Late Proterozoic), Southwestern Part of Russian Northeast
BK
Bulkley
Late Cretaceous
Bulkley Metallogenic Belt of Porphyry Cu-Mo and Polymetallic Vein Deposits (Late Cretaceous), Central British Columbia
BK/SK_2
Skeena
Skeena Metallogenic Belt of Porphyry Cu-Mo; Porphyry Mo; Ag Polymetallic Vein and Au-Ag Epithermal Vein Deposits (early Tertiary), Central British Columbia
BN
Baranof
Baranof Metallogenic Belt of Au Quartz Vein Deposits (early Tertiary), Southeastern Alaska
BR
Britannia
Britannia Metallogenic Belt of Volcanogenic Cu-Zn Massive Sulfide Deposits (Late Jurassic and Early Cretaceous), Southern British Columbia
BR_2
Brooks Range
Brooks Range Metallogenic Belt of Granitic Magmatism Deposits (Devonian), Northern Alaska
BZ
Badzhal-Ezop
Badzhal-Ezop Metallogenic Belt of Sn Greisen, Sn Skarn, and Sn Quartz Vein Deposits (Late Cretaceous), West-Central Part of Russian Southeast
CA
Cassiar
Cassiar Metallogenic Belt of Porphyry Mo-W; W Skarn, Zn-Pb-Ag Manto, Sn Skarn, and Au Skarn Deposits (mid-Cretaceous), Southern Yukon Territory
CA/YT
Yukon-Tanana Upland
Yukon-Tanana Upland Metallogenic Belt of Au-Quartz Vein Deposits (mid-Cretaceous), East-Central Alaska
CA_2/SRM
Cathedral
Cambrian
Middle Cambrian
Cathedral Metallogenic Belt of Southeast Missouri Zn-Pb-Ag Deposits (Middle Cambrian), Southern British Columbia
Southern Rocky Mountains
Paleozoic to Cenozoic
Early Paleozoic through Triassic
Southern Rocky Mountains Metallogenic Belt of Stratabound Ba-Mg-Ca Deposits (Early Paleozoic through Triassic), Southern British Columbia
CAR
Chersky-Argatass
Chersky-Argatass Ranges Inferred Metallogenic Belt of Kuroko Massive Sulfide Deposits (Late Jurassic), West-Central Part of Russian Northeast
CB
Cariboo
Middle Jurassic to Early Cretaceous
Cariboo Metallogenic Belt of Au Quartz Vein Deposits (Middle Jurassic to Early Cretaceous), Southern British Columbia
CD
Chokurdak
Early and mid-Cretaceous
Chokurdak Metallogenic Belt of Granitoid-Related Sn Greisen, Sn-Polymetallic Vein, Sn Greisen, and Au-Ag Epithermal Vein Deposits (Early and mid-Cretaceous),
Northern Part of Russian Northeast
CF
Catface
Eocene
Catface Metallogenic Belt of Porphyry Cu-Mo-Au and Au-Ag Polymetallic Vein Deposits (Eocene), Vancouver Island
CH
Chukotka
Early Cretaceous
Chukotka Metallogenic Belt of Au Quartz Vein and Sn and Sn-W Polymetallic Vein Deposits (Early Cretaceous), Northern Part of Russian Northeast
CH_2
Churchill
Churchill Metallogenic Belt of Cu Vein Deposits (Late Proterozoic), Northern British Columbia
CK
Central Kamchatka
middle and late Tertiary
Central Kamchatka Metallogenic Belt of Au-Ag Epithermal and Porphyry Cu-Mo Deposits (middle and late Tertiary), Kamchatka Peninsula
CKY
Central Koryak
Central Koryak Metallogenic Belt of Igneous Arc Deposits (Late Cretaceous and early Tertiary), East-Central Part of Russian Northeast
CM
Chugach Mountains
Chugach Mountains Metallogenic Belt of Au Quartz Vein Deposits (early Tertiary), Southern Alaska
CM_2
Coast
Triassic and Jurassic
Late Triassic and Early Jurassic
Coast Metallogenic Belt of Volcanogenic Cu-Zn-Au-Ag Massive Sulfide Deposits (Late Triassic and Early Jurassic), Northern British Columbia
CMN
Copper Mountain (North)
Copper Mountain (North) Metallogenic Belt of Porphyry Cu-Au Deposits (Jurassic), Northern British Columbia
CMS
Copper Mountain (South)
Copper Mountain (South) Metallogenic Belt of Porphyry Cu-Au Deposits (Jurassic), Southern British Columbia
CMS/GU
Guichon
Guichon Metallogenic Belt of Porphyry Cu-Mo-Au and Au Skarn Deposits (Late Triassic and Early Jurassic), Southern British Columbia
CR
Clark Range
Clark Range Metallogenic Belt of Sediment-Hosted Cu-Ag Deposits (Late Proterozoic), Southern British Columbia
CR/PR
Purcell
Middle Proterozoic
Purcell Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag Deposits (Middle Proterozoic), Southern British Columbia
CS
Cassiar Asbestos
mid-Cretaceous?
Cassiar Asbestos Metallogenic Belt of Serpentinite-Hosted Asbestos Deposits (mid-Cretaceous?), Northern British Columbia
CS_2
Central Sakhalin
early Tertiary?
Central Sakhalin Metallogenic Belt of Au Quartz Vein and Talc Deposits (early Tertiary?), Sakhalin Island, Southeastern Part of Russian Far East
CSE
Central-Southeastern Alaska
Oligocene
Central-Southeastern Alaska Metallogenic Belt of Porphyry Mo and Cu Deposits (Oligocene), Southeastern Alaska
CSE/YK
Yakobi
Yakobi Metallogenic Belt of Gabbroic Ni-Cu Deposits (Tertiary), Southeastern Alaska
DA
DE
Dempster
Dempster Metallogenic Belt of Sedimentary Exhalative Ba, Sedimentary-exhalative Ni-Zn-PGE-Au, and Kuroko Zn-Pb-Cu Massive Sulfide Deposits (Devonian and Mississippian),
Northwestern Yukon
DE/GM
Gillespie
Early Proterozoic
Gillespie Metallogenic Belt of  Sedimentary Exhalative Zn-Cu-Pb-Au-Ag Deposits (Early Proterozoic), Southern Yukon Territory
DE/GM/WR_2
Wernecke
Wernecke Metallogenic Belt of U-Cu-Fe (Au-Co) Vein and Breccia Deposits (Early Proterozoic), Central Yukon Territory
DE/NCO
Northern Cordilleran
Late Proterozoic and Paleozoic
Late Proterozoic to Devonian
Northern Cordillera Metallogenic Belt of Southeast Missouri Zn-Pb Deposits (Late Proterozoic to Devonian), Central Yukon Territory
DE_2
Dogdo-Erikit
Dogdo-Erikit Metallogenic Belt of Au-Ag Epithermal Vein, Sn-polymetallic vein (Southern Bolivian type?), and Volcanic-Hosted Hg (Plamennoe type) Deposits
(Late Cretaceous and early Tertiary), West-Central Part of Russian Northeast
DP
Darpir
Darpir Metallogenic Belt of Sn and Associated Felsic-Magmatism Deposits (Early Cretaceous), Western Part of Russian Northeast
DP/SH_2
Shamanikha
Shamanikha Metallogenic Belt of Au Quartz Vein and Cu-Ag Quartz Vein Deposits (Late Jurassic and Early Cretaceous), Central Part of the Russian Northeast
DZ
Dzhardzhan River
Late Proterozoic through Late Paleozoic
Dzhardzhan River Metallogenic Belt of Southeast Missouri Pb-Zn, Sediment-Hosted Cu and Sandstone-Hosted U deposits (Late Proterozoic through late Paleozoic),
Northern Part of Eastern Siberia
DZ_2
Dzhugdzhur
Early and Middle Proterozoic
Dzhugdzhur Metallogenic Belt of Anorthosite-hosted, Apatite Ti-Fe Deposits (Early and Middle Proterozoic), Northern Part of Russian Southeast
EAAB
Eastern Asia-Arctic: Anuyi-Beringovsky
Eastern Asia-Arctic Metallogenic Belt: Anuyi-Beringovsky Zone of Au-Ag Epithermal Vein and Disseminated Gold Sulfide Deposits (Late Cretaceous), Northeastern Part of Russian Northeast
EAAB/EACH
Eastern Asia-Arctic: Chukotka
Eastern Asia-Arctic Metallogenic Belt: Chukotka Zone of Igneous-Related Hg Deposits (Late Cretaceous), Northeastern Part of Russian Northeast
EAAB/EACH/EACN
Eastern Asia-Arctic: Chaun
Eastern Asia-Arctic Metallogenic Belt: Chaun Zone of Granitic-Magmatism- Related Deposits (Late Cretaceous), Northeastern Part of Russian Northeast
EAAB/EACN
EAAB/OL
Oloy
Late Jurassic and Early Cretaceous?
Oloy Metallogenic Belt of Porphyry Cu-Mo and Au-Ag Epithermal Vein Deposits (Late Jurassic and Early Cretaceous?), North-Central Part of Russian Northeast
EACH
EACH/EACN
EACN
EAKN
Eastern Asia-Arctic: Korkodon-Nayakhan
Eastern Asia-Arctic Metallogenic Belt: Korkodon-Nayakhan Zone of Porphyry Mo and Granitoid-Related Au Deposits (Late Cretaceous), East-Central Part of Russian Northeast
EAKY
Eastern Asia-Arctic: Koni-Yablon
Eastern Asia-Arctic Metallogenic Belt: Koni-Yablon Zone of Porphyry Cu-Mo and Cu-Mo Skarn Deposits (Cretaceous), Southern Part of Russian Northeast
EAKY/EAOH
Eastern Asia-Arctic: Okhotsk
mainly Late Cretaceous and early Tertiary
Eastern Asia-Arctic Metallogenic Belt: Okhotsk Zone of Au-Ag Epithermal Vein Deposits (mainly Late Cretaceous and early Tertiary), Southeastern Part of Russian Northeast
EAKY/OL
EAOH
EAOM
Eastern Asia-Arctic: Omsukchan
Eastern Asia-Arctic Metallogenic Belt: Omsukchan Zone of Sn Polymetallic Vein, Sn Silicate-Sulfide, Porphyry Sn, Ag Epithermal Vein, Porphyry Mo- Cu, Associated Deposits (Late Cretaceous),
Southeastern Part of Russian Northeast
EAR
Eastern Alaska Range
Eastern Alaska Range Metallogenic Belt of Gabbroic Ni-Cu Deposits (Late Triassic), Southern Alaska
EAVK
Eastern Asia-Arctic: Verkhne-Kolyma
Eastern Asia-Arctic metallogenic belt: Verkhne-Kolyma Zone of Sn-Ag Polymetallic Vein, (Southern Bolivian type), Sn Polymetallic Vein, Rhyolite-Hosted Sn,
and Granitoid-Related Au Deposits (Cretaceous), Southeastern Part of Russian Northeast
ECA
East-Central Alaska
Early Cretaceous to early Tertiary
East-Central Alaska Metallogenic Belt of Granitic Magmatism Deposits (Early Cretaceous to early Tertiary), East-Central Alaska
EK
East Kamchatka
Miocene
East-Kamchatka Metallogenic Belt of Au-Ag Epithermal Deposits (Miocene), Central and Southern Kamchatka Peninsula
EK/KU_2
Kuril
Tertiary and Quaternary
middle Tertiary to Holocene
Kuril Metallogenic Belt of Au-Ag Epithermal Vein, Cu-Pb-Zn Polymetallic Vein, Sn silica-sulfide vein, Sn Vein, Sulfur-sulfide (Volcanic S), Kuroko Massive Sulfide,
and Porphyry Mo Deposits (middle Tertiary to Holocene), Kuril Islands, East-Central Part of Russian Far East
ES
Easten Seward Peninsula (Kiwalik Mountain)
Devonian? and Missippian?
Eastern Seward Peninsula (Kiwalik Mountain) Metallogenic Belt of Kuroko Massive Sulfide Deposits (Devonian? and Missippian?), Northwestern Alaska
ESA
ESM
Easten Seward Peninsula
Late Jurassic?
Eastern Seward Peninsula and Marshall Metallogenic Belt of Podiform Cr Deposits (Late Jurassic?), Northwestern Alaska
FI
Finlayson Lake
Finlayson Lake Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag-Cu-Au Deposits (Devonian and Mississippian), Southern Yukon Territory
FL
Francois Lake
Francois Lake Metallogenic Belt of Porphyry Mo Deposits (Late Jurassic and Early Cretaceous), Central British Columbia
FLB
Fish Lake-Bralorne
Fish Lake-Bralorne Metallogenic Belt of Porphyry Cu-Mo and Polymetallic Ag-Au Vein Deposits (Late Cretaceous and early Tertiary), Southern British Columbia
FLB/OC
Owl Creek
Oligocene and Miocene
Owl Creek Metallogenic Belt of Porphyry Cu-Mo; Porphyry Mo and Au Polymetallic Vein Deposits (Oligocene and Miocene), Southern British Columbia
FLB/TY
Tyaughton-Yalakom
Tyaughton-Yalakom Metallogenic Belt of Hg-Au-W-Sb Polymetallic Vein Deposits (Eocene), Southern British Columbia
FM
Fortymile
Cretaceous?
Fortymile Alaska Metallogenic Belt of Podiform Cr and Serpentinite-Hosted Asbestos Deposits (Cretaceous?), East-Central Alaska
FR
Fish River
Fish River Metallogenic Belt of Sedimentary P and Fe Deposits (Early Cretaceous), Northern Yukon Territory
FR_2
Frances Lake
Frances Lake Metallogenic Belt of Volcanogenic Zn-Cu-Pb Massive Sulfide Deposits (Devonian and Mississippian), Southern Yukon Territory
GA
Gataga
Gataga Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag-Ba Deposits (Devonian and Mississippian), Northern British Columbia
GB
Gambier
Gambier Metallogenic Belt of Porphyry Cu-Mo and Zn-Pb-Cu Skarn Deposits (early Tertiary), Southern British Columbia
GL
Galam
Galam Metallogenic Belt of Volcanogenic Fe, Volcanogenic Mn, and Sedimentary P Deposits (Cambrian), Northern Part of Russian Southeast
GL_2
Galore Creek
Galore Creek Metallogenic Belt of Porphyry Cu-Au Deposits (Late Triassic and Early Jurassic), Northern British Columbia
GL_2/TC
Texas Creek
Late Triassic to Middle Jurassic
Texas Creek Metallogenic Belt of Porphyry Cu-Mo-Au and Au-Ag Polymetallic Vein Deposits (Late Triassic to Middle Jurassic), Northern British Columbia
GR
Gar
Gar Metallogenic Belts of Volcanogenic Fe Deposits and Stratiform Cu and Pb-Zn Deposits (Late Proterozoic), Western Part of Russian Southeast
GU
HP/MP
Howards Pass
Silurian
Howards Pass Metallogenic Belt of Sedimentary Exhalative Zn-Pb Deposits (Silurian), Southern Yukon Territory
MacMillan Pass
Devonian and Early Mississippian
Macmillan Pass Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag-Ba Deposits (Devonian and Early Mississippian), Central Yukon Territory
IN
Ingenika
Ingenika Metallogenic Belt of Southeast Missouri Zn-Pb-Ag-Ba Deposits (Late Proterozoic to Devonian), Northern British Columbia
IP
Island Porphyry
Island Porphyry Metallogenic Belt of Porphyry Cu-Mo; Cu Skarn, and Fe and Cu Skarn Deposits (Jurassic), Vancouver Island
IR
Iruneiskiy
Iruneiskiy Metallogenic Belt of Porphyry Cu Deposits (Late Jurassic), Southern Kamchatka Peninsula
JU
Juneau
Juneau Metallogenic Belt of Au Quartz Vein Deposits (early Tertiary), Southeastern Alaska
KB
Kabarga
Early Cambrian
Kabarga Metallogenic Belt of Ironstone (Superior Fe) Deposits (Early Cambrian), Southern Russian Southeast
KB_2
Kobuk
Kobuk Metallogenic Belt of Podiform Cr Deposits (Jurassic), Northern Alaska
KE
Kedon
Middle Paleozoic
Kedon Metallogenic Belt of Au-Ag Epithermal Vein, Porphyry Mo, Fe Skarn, and Associated Deposits (Middle Paleozoic), Central Part of Russian Northeast
KH
Khingan
Khingan Metallogenic Belt of Sn Greisen and Sn Quartz Vein Deposits (Late Cretaceous and early Tertiary), Western Part of Russian Southeast
KH_2
Koryak Highlands
Koryak Highlands Metallogenic Belt of Zoned Mafic-Ultramafic PGE Deposits (Late Cretaceous), East-Central Part of Russian Northeast
KI
Kilbuck
Kilbuck Metallogenic Belt of Ironstone (Superior Fe) Deposits (Early Proterozoic), Southwestern Alaska
KK
Ketchikan
Late Paleozoic
Ketchikan Metallogenic Belt of Kuroko Massive Sulfide Deposits (Late Paleozoic), Southeastern Alaska
KL
Klotassin
Klotassin Porphyry Metallogenic Belt of Porphyry Cu-Au-Ag Deposits (Early Jurassic), Southern Yukon Territory
KL_2
Klukwan-Duke
Klukwan Duke Metallogenic Belt of Mafic-Ultramafic Ti-Fe-Cr-PGE Deposits (mid-Cretaceous), Southeastern Alaska
KM
Kema
mid-Cretaceous to early Tertiary
Kema Metallogenic Belt of Ag-Au Epithermal Vein, and Porphyry Cu-Mo Deposits (mid-Cretaceous to early Tertiary), Eastern Part of Russian Southeast
KO
Kondyor
Jurassic?
Kondyor Metallogenic Belt of Zoned Mafic-Ultramafic PGE-Cr Deposits (Jurassic?), Northern Part of Russian Southeast
KO_2
Kootenay
Kootenay Metallogenic Belt of Sedimentary Exhalative Zn-Pb Deposits (Cambrian), Southern British Columbia
KOD
Kodiak Island and Border Ranges
Early or Middle Jurassic
Kodiak Island and Border Ranges Metallogenic Belt of Podiform Cr Deposits (Early or Middle Jurassic), Southern Coastal Alaska
KR
Khamna River
Khamna River Metallogenic Belt of Carbonatite-Related Nb, Ta, and REE Deposits (Devonian), Southern Part of Eastern Siberia
KR/SD
Sette-Daban
Sette-Daban Range Metallogenic Belt of Southeast Missouri Pb-Zn, Sediment-Hosted Cu, and Basaltic Cu Deposits (Late Proterozoic), Southern Part of Eastern Siberia
KS
Kootenay-Shuswap
Kootenay-Shuswap Metallogenic Belt of Volcanogenic Zn-Pb-Cu-Ag-Au Massive Sulfide Deposits (Devonian and Mississippian), Southern British Columbia
KS/MO
Monashee
Monashee Metallogenic Belt of Sedimentary Exhalative Zn-Pb-Ag Deposits (Late Proterozoic), Southern British Columbia
KU
Kular
Kular Metallogenic Belt of Au Quartz Vein, Granitoid-Related Au, Au- REE Quartz Vein, and Sn Quartz Vein Deposits (Early Cretaceous), Northern Part of Eastern Siberia
KU_2
KUY
Kuyul
Middle or Late Jurassic
Kuyul Metallogenic Belt of Podiform Cr, PGE and Associated Deposits (Middle or Late Jurassic), East-Central Part of Russian Northeast
KV
Kvinumsky
Kvinumsky Metallogenic Belt of Hornblende Peridotite Cu-Ni Deposits (Early Cretaceous), Southern Kamchatka Peninsula
LA
Lower Amur
Lower Amur Metallogenic Belt of Au-Ag Epithermal Vein, Porphyry Cu, and Sn Greisen Deposits (mid-Cretaceous to early Tertiary), Northern Part of Russian Southeast
LG
Laoelin
Laoelin Metallogenic Belt of Au Quartz Vein and As Quartz Vein Deposits (Late Jurassic and Early Cretaceous), Southern Part of Russian Southeast
LG_2
Laoelin-Grodekovsk
Permian
Laoelin-Grodekovsk Metallogenic Belt of Porphyry Cu-Mo and Au-Ag Epithermal Vein Deposits (Permian), Southern Part of Russian Southeast
LI
Liard
Liard Metallogenic Belt of Southeast Missouri(?) Ba-F Deposits (Devonian), Northern British Columbia
LO
Left Omolon
Left Omolon Belt of Porphyry Mo-Cu and Mo-Cu Skarn Deposits (Early Cretaceous), East-Central Part of Russian Northeast
LZ
Luzhkinsky
Luzhkinsky Metallogenic Belt of Sn Greisen, Sn Polymetallic Vein, Sn silica-sulfide vein, and Porphyry Sn Deposits (mid-Cretaceous to early Tertiary),
Southern Part of Russian Southeast
MA
Mainits
Mainits Metallogenic Belt of Massive Sulfide Deposits (Late Jurassic and Early Cretaceous), Eastern Part of Russian Northeast
MC
Maclaren
Maclaren Metallogenic Belt of Au Quartz Vein Deposits (early Tertiary), Northern Part of Eastern-Southern Alaska
MO
MP
MP/NCO
MS
Mount Sicker
Middle and Late Proterozoic
Mount Sicker Metallogenic Belt of Volcanogenic Massive Sulfide Zn-Cu-Pb-Au-Ag Deposits (Devonian), Vancouver Island
MY
Mystic
Triassic?
Mystic Metallogenic Belt of Besshi Massive Sulfide and Bedded Barite Deposits (Triassic?), West-Central Alaska
NB
North Bureya
North Bureya Metallogenic Belt of Au-Ag Epithermal Vein and Granitoid-Related Au Deposits (Early Cretaceous), Northwestern Part of Russian Southeast
NBR
Northwestern Brooks Range
Mississippian and Pennsylvanian
Northwestern Brooks Range Metallogenic Belt of Sedimentary-Exhalative Zn-Pb, Bedded Barite, and Vein Sulfide Deposits (Mississippian and Pennsylvanian), Northwestern Alaska
NCO
NCO/RAP
Rapitan
Rapitan Metallogenic Belt of Sedimentary Iron Formation Deposits (Late Proterozoic), Central Yukon Territory
NCO/WR_2
NEK
Northeastern Koyukuk River
Northeastern Koyukuk River Metallogenic Belt of Igneous Arc Deposits (Late Cretaceous and early Tertiary), Central Alaska
NO
Nome
Nome Metallogenic Belt of Au Quartz Vein Deposits (Early and mid-Cretaceous), Seward Peninsula
NS
Nelson
Nelson Metallogenic Belt of Ag Polymetallic Vein; Ag-Pb-Zn Manto; Au-Ag Epithermal Vein, Porphyry Mo, Paleoplacer U and Deposits (Eocene), Southern British Columbia
NWK
Northwestern Koyukuk Basin
Northwestern Koyukuk Basin Metallogenic Belt of Felsic Plutonic U Deposits (Late Cretaceous), West-Central Alaska
NWK/WCA
West-Central Alaska
West-Central Alaska Metallogenic Belt of Porphyry Cu-Au Deposits (Late Cretaceous), West-Central Alaska
OC
OK
Oroek
Oroek Metallogenic Belt of Ironstone and Sediment-Hosted Cu Deposits (Middle and Late Proterozoic), West-Central Part of Russian Northeast
OL
OM
Omolon
Archean and Early Proterozoic
Omolon Metallogenic Belt of Ironstone (Superior Fe) Deposits (Archean and Early Proterozoic), Central Part of Russian Northeast
OR
Omulevka River
Ordovician
Middle Ordovician
Omulevka River Metallogenic Belt of Austrian Alps W and Kipushi Cu-Pb-Zn Deposits (Middle Ordovician), West-Central Part of Russian Northeast
OT
Olyutor
Miocene and Pliocene
Olyutor Metallogenic Belt of Igneous-Arc-Related Deposits (Miocene and Pliocene), Kamchatka Peninsula
PC
Pinchi Lake
Eocene and Oligocene
Pinchi Lake Metallogenic Belt of Hg Epithermal Vein and Sb-Au Vein Deposits (Eocene and Oligocene), Central British Columbia
PK
Pekulney
Pekulney Metallogenic Belt of Basaltic Cu Deposits (Late Jurassic and Early Cretaceous), Eastern Part of Russian Northeast
PR
PR/SRM
PW
Prince William Sound
Prince William Sound Metallogenic Belt of Besshi and Cyprus Massive Sulfide Deposits (early Tertiary), Eastern-Southern Alaska
PW_2
Prince of Wales Island
Ordovician and Silurian
Prince of Wales Island Metallogenic Belt of Granitic-Magma-Related Deposits (Ordovician and Silurian), Southeastern Alaska
PW_2/WSE
Western-Southeastern Alaska
Western-Southeastern Alaska Metallogenic Belt of Granitic-Magma-Related Deposits (Late Jurassic and Early Cretaceous), Southeastern Alaska
RA
Rassokha
Rassokha Metallogenic Belt of Basaltic Cu and Sediment-Hosted Cu Deposits (Ordovician), Western Part of Russian Northeast
RAP
RL
Robb Lake
Robb Lake Metallogenic belt of Southeast Missouri Zn-Pb Deposits (Devonian), Northern British Columbia
RL_2
Rossland
Middle Jurassic
Rossland Metallogenic Belt of Au-Ag Polymetallic Vein Deposits (Middle Jurassic), Southern British Columbia
RS
Redstone
Redstone Metallogenic Belt of Sediment-Hosted Cu-Ag Deposits (Late Proterozoic), Central Yukon Territory
SA
Samarka
Samarka Metallogenic Belt of W Skarn, and Porphyry Cu-Mo Deposits (Early Cretaceous), West-Central Part of Russian Southeast
SA_2
SBR
Southern Brooks Range
Southern Brooks Range Metallogenic Belt of Au Quartz Vein Deposits (Early and mid-Cretaceous), Northern Alaska
SCT
Schmidt and Terpeniya Peninsulas
Schmidt and Terpeniya Peninsulas Metallogenic Belt of Podiform Cr Deposits (Late Cretaceous), Sakhalin Island, Southeastern Part of Russian Far East
SD
SEL
Selenyakh River
Devonian to Permian
Selenyakh River Metallogenic Belt of Southeast Missouri Pb-Zn, Stratabound Hg and Au, and Pb-Zn Vein Deposits (Devonian to Permian), Northwestern Part of Russian Northeast
SG
Sergeevka
Sergeevka Metallogenic Belt of Granitoid-Related Au Deposits (Late Cretaceous), Southern Part of Russian Southeast
SG/TK
Taukha
Taukha Metallogenic Belt of B Skarn, Pb-Zn Skarn, Pb-Zn Polymetallic Vein, and Related Deposits (mid-Cretaceous to early Tertiary), Eastern Part of Russian Southeast
SH
Sakhalin Island
late Tertiary?
Sakhalin Island Metallogenic Belt of Silica-Carbonate or Volcanic-Hosted Hg Deposits (late Tertiary?), Sakhalin Island, Southeastern Part of Russian Far East
SH_2
SK
Selemdzha-Kerbi
Selemdzha-Kerbi Metallogenic Belt of Au Quartz Vein Deposits (Late Jurassic and Early Cretaceous), Northwestern Part of Russian Southeast
SK_2
SK_3
South Khingan
Late Proterozoic and Early Paleozoic
South Khingan Metallogenic Belt of Ironstone (Superior Fe) Deposits (Late Proterozoic and Early Paleozoic), Southern part of Russian Southeast
SL
Surprise Lake
Surprise Lake Metallogenic Belt of Porphyry Mo-W-Cu, and Au-Ag Polymetallic Vein Deposits (Late Cretaceous and early Tertiary), Northern British Columbia
SP
Seward Peninsula
Seward Peninsula Metallogenic Belt of Granitic Magmatism Deposits (Late Cretaceous), Northwestern Alaska
SR
Sinuk River
Sinuk River Metallogenic Belt of Massive Sulfide-Barite and Stratabound Fe Deposits (Late Proterozoic), Northwestern Alaska
SR_2
Sredinny
Cretaceous and early Tertiary?
Sredinny Metallogenic Belt of Au Quartz Vein and Metamorphic REE Vein(?) Deposits (Cretaceous and early Tertiary?), Southern Kamchatka Peninsula
SRM
Paleozoic and Mesozoic
ST
Stanovoy
Stanovoy Metallogenic Belt of Granitoid-Hosted Au Deposits (Cretaceous?), Northern Part of the Russian Southeast
SU
Sustut
Sustut Metallogenic Belt of Basaltic Cu Deposits (Late Triassic), Northern British Columbia
SW
Selwyn
Selwyn Metallogenic Belt of W-Cu Skarn, Zn-Pb-Ag Skarn, and Zn-Pb-Ag Manto Deposits (mid-Cretaceous), Southern Yukon Territory
SWA
Southwestern Alaska
Late Triassic and Jurassic?
Southwestern Alaska Metallogenic Belts of Zoned Mafic-Ultramafic PGE Deposits (Late Triassic and Jurassic?), Southwestern Alaska
SWK
Southwestern Kuskokwim Mountains
Southwestern Kuskokwim Mountains Metallogenic Belt of Granitic-Magmatism- Related Deposits (Late Cretaceous and early Tertiary), Southwestern Alaska
TAM
Tamvatney-Mainits
Tamvatney-Mainits Metallogenic Belt of Podiform Cr Deposits (Late Jurassic and Early Cretaceous), East-Central Part of the Russian Northeast
TC
TK
TM
Talkeetna Mountains
Cretaceous or Tertiary
Late Cretaceous or early Tertiary
Talkeetna Mountains Metallogenic Belt of Au Quartz Vein Deposits (Late Cretaceous or early Tertiary), Northern Part of Southern Alaska
TM_2
TO
Tommot River
Late Devonian?
Tommot River Metallogenic Belt of Carbonatite-Related Nb, Ta, and REE Deposits (Late Devonian?), North-Central Part of Russian Northeast
TO_2
Tompon
Tompon Metallogenic Metallogenic Belt of Cu, W, Sn Skarn, and Sn Quartz Vein Deposits (Early Cretaceous), West-Central Part of Eastern Siberia
TO_3
Toodoggone
Toodoggone Metallogenic Belt of Au-Ag Epithermal Vein Deposits (Early Jurassic), Northern British Columbia
TR
Tracy
Tracy Metallogenic Belt of Kuroko Massive Sulfide Deposits (Devonian and Mississippian), Southeastern Alaska
TS
Tombstone
Tombstone Metallogenic Belt of Ag Polymetallic Vein, Au-Sb Vein, and W-Sn-Au Skarn and Cu Deposits (mid-Cretaceous), Central Yukon Territory
UB
Ust-Belaya
Early Paleozoic
Ust-Belaya Metallogenic Belt of Podiform Cr Deposits (Early Paleozoic), Northeastern Part of Russian Northeast
UL
Ulkan
Ulkan Metallogenic Belt of Felsic Plutonic REE Deposits (Early and Middle Proterozoic), Northwestern Part of Russian Southeast
URS
Urultun and Sudar Rivers
Devonian and Carboniferous
Urultun and Sudar Rivers Metallogenic Belt of Southeast Missouri Pb-Zn, Carbonate-Hosted Hg, Basaltic Cu, and Volcanogenic Mn Deposits
(Devonian and Carboniferous), West Central Part of Rusian Northeast
VI
Verkhoyansk-Indigirka
Verkhoyansk-Indigirka (Dulgalak) Metallogenic Belt of Clastic Sediment-Hosted Hg and Sb-Au Vein Deposits (Late Cretaceous and early Tertiary), Western Part of Russian Nort
VI/VV
Vostochno-Verkhoyansk
Vostochno-Verkhoyansk Metallogenic Belt of Ag Polymetallic Vein Deposits (Late Cretaceous and early Tertiary), Western Part of Russian Northeast
VK
Verkhoyansk
Verkhoyansk Metallogenic Belt of Au Quartz Vein, Au-Sn Polymetallic Vein Deposits (Late Jurassic and Early Cretaceous), Western Part of Russian Northeast
VT
Vatyn
Vatyn Metallogenic Belt of Volcanogenic Mn and Fe Deposits (Early Cretaceous), Southeastern Part of Russian Northeast
VV
VY
Verkhne-Yudomsky
Verkhne-Yudomsky (Yuzhno-Verkhoyansk) Metallogenic Belt of Sn Polymetallic Vein (Southern Bolivian type) Deposits (Cretaceous), Western Part of Russian Northeast
VZ
Voznesenka
Voznesenka Metallogenic Belt of Korean Pb-Zn Deposits (Cambrian), Southern Part of Russian Southeast
WCA
WH
Whitehorse
Whitehorse Metallogenic Belt of Cu-Fe Skarn, Porphyry Cu-Au-Ag, and Au-Ag Polymetallic Vein Deposits (mid-Cretaceous), Southern Yukon Territory
WR
Wrangell Mountains
Wrangell Mountains Metallogenic Belt of Cu-Ag Quartz Vein and Kennecott Cu Deposits (mid-Cretaceous), Eastern-South Alaska
WSE
YA
Yana-Kolyma
Yana-Kolyma Metallogenic Belt of Au Quartz Vein, Sn Vein and Greisen, W Vein and Clastic-Sediment-Hosted Hg Deposits (Late Jurassic and Early Cretaceous), Central Part of Russian Northeast
YA_2
Yarkhodon
Yarkhodon Metallogenic Belt of Southeast Missouri Pb-Zn Deposits (Devonian), West-Central Part of Russian Northeast
YA_3
Yaroslavka
Late Cambrian
Yaroslavka Metallogenic Belt of Fluorite and Sn Greisen Deposits (Late Cambrian), Southern Part of Russian Southeast
YK
YP
Yana-Polousnen
Yana-Polousnen Metallogenic Metallogenic Belt of Granitoid-Related Sn Quartz Vein, W Vein, Sn Greisen, Co-, Au-, and Sn-Skarn, Sn-Silicate Sulfide Vein and Related Deposits (Early Cretaceous),
Central Part of Russian Northeast
YR
Yukon River
Yukon River Metallogenic Belt of Podiform Cr Deposits (Jurassic), West-Central Alaska
YS
Yasachnaya River
Yasachnaya River Metallogenic Belt of Pb-Zn Skarn, Porphyry Cu, and Cu-Ag Vein Deposits (Late Jurassic), Western Part of Russian Northeast
YT