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