NAC
Western North American Craton
craton
east of Canadian Cordillera
Archean to Mesozoic
Archean to Cretaceous
Archean, Proterozoic, Cambrian, Ordovician, Devonian, Mississippian, Jurassic, Cretaceous
Czs
Cenozoic (Quaternary and Tertiary) overlap assemblage
Cenozoic
Tertiary and Quaternary
Tertiary, Quaternary
NSV
North Asian Craton Margin - Verkhoyansk fold belt
craton margin
Archean, Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous
NSC
North Asian Craton
eastern part of North Asian Craton
KT
Kote'nyi terrane
passive continental margin terrane
New Siberian Islands
Paleozoic and Mesozoic
Ordovician to Jurassic
Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
io
Indigirka-Oloy sedimentary-volcanic-plutonic assemblage
Jurassic overlap assemblage
southeastern to northwestern Russian Northeast
Mesozoic
Jurassic and Cretaceous
Middle Jurassic to Early Cretaceous
Middle Jurassic, Late Jurassic, Early Cretaceous
BE
Bennett terrane
East Siberian Sea
Paleozoic
Cambrian and Ordovician
Cambrian, Ordovician
HE
Henrietta terrane
Mississippian and Pennsylvanian
Mississippian, Pennsylvanian
SA
South Anyui terrane
accretionary wedge and subduction zone terrane-B oceanic rocks
northern part of Russian Northeast
Pennsylvanian to Jurassic
Pennsylvanian, Permian, Triassic, Jurassic
KOKN
Kular-Nera terrane
accretionary wedge and subduction zone terrane-A turbidites
central part of Russian Northeast
Permian to Jurassic
Permian, Triassic, Jurassic
vk
Verkhoyansk collisional granite belt
Cretaceous overlap assemblage
southern and western parts of Russian Northeast
Late Jurassic and Early Cretaceous
Late Jurassic, Early Cretaceous
NAM
North American Craton Margin
between North American Craton and terranes of Canadian Cordillera
Proterozoic to Mesozoic
Proterozoic to Cretaceous
Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Permian, Triassic, Cretaceous
KOV
Omulevka terrane
south-central part of Russian Northeast
Late Proterozoic to Mesozoic
Late Proterozoic to Triassic
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic
KOM
Munilkan terrane
oceanic crust, sea mount, and ophiolite terrane
northwestern part of Russian Northeast
Late Proterozoic and Paleozoic
Late Proterozoic and Cambrian
Late Proterozoic, Cambrian
ud
Uda volcanic-plutonic belt
southern part of Russian Northeast)
AA
Arctic Alaska superterrane
northern Alaska and western Seward Peninsula
Late Proterozoic to Cretaceous
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous
oc
Okhotsk-Chukotka volcanic-plutonic belt
eastern Russian Northeast
Cretaceous
Cretaceous, Early Tertiary
AU
Argun terrane
cratonal terrane
northwestern part of Russian Southeast
Archean to Paleozoic
Archean to Permian
Archean, Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian
co
Colville sedimentary basin
northern Alaska
Mesozoic and Cenozoic
Cretaceous and Tertiary
Cretaceous, Tertiary
bu
Bureya sedimentary basin
Jurassic and Early Cretaceous
Jurassic, Early Cretaceous
KOAL
Alazeya terrane
island arc terrane
north-central part of Russian Northeast
Devonian to Jurassic
Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
OL
Oldoi terrane
Silurian to Permian
Silurian, Devonian, Mississippian, Permian
CH
Chukotka terrane
Proterozoic to Jurassic
Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
uo
Umlekan-Ogodzhin volcanic-plutonic belt
Early Cretaceous and Late Jurassic overlap assemblage
northeastern part of Russian Southeast
Jurassic, Cretaceous
TD
Tukuringra-Dzhagdi terrane
northern part of Russian Southeast
Proterozoic and Paleozoic
Proterozoic to Permian
Proterozoic, Silurian, Devonian, Pennsylvanian, Permian
PC
Porcupine terrane
northeastern Alaska and northwestern Yukon Territory
Late Proterozoic to Permian
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Pennsylvanian, Permian
AG
Angayucham terrane
east- and west-central Alaska, and southern Brooks Range
Devonian, Mississippian, Pennsylvanian,  Permian, Triassic, Jurassic
rc
Rauhcha sedimentary basin
northeastern part of Russian Northeast
Late Jurassic to mid-Cretaceous
om
Omineca-Selwyn plutonic belt
eastern Canadian Cordillera, interior and northern Alaska, and northern Russian Northeast
mid-Cretaceous
Mid-Cretaceous
KOR
Rassokha terrane
Late Proterozoic to Jurassic
Late Proterozoic, Cambrian, Ordovician, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
KOP
Prikolyma terrane
Late Archean to Mesozoic
Late Archean to Jurassic
Late Archean, Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
KOKT
Khetachan terrane
Triassic and Jurassic
Triassic, Jurassic
NU
Nutesyn terrane
Mississippian to Cretaceous
Mississippian, Jurassic, Cretaceous
CO
Coldfoot terrane
metamorphosed continental margin terrane
southern Brooks Range, Alaska
Proterozoic to Mississippian
Proterozoic, Cambrian, Silurian, Devonian, Mississippian
KOAG
Argatas terrane
Ordovician to Triassic
Ordovician, Devonian, Mississippian, Permian, Triassic
KL
Kholondzhikansk terrane
turbidite basin terrane
GN
Gonzha terrane
western part of Russian Southeast
Archean to Mississippian
Archean, Proterozoic, Cambrian, Ordovician, Devonian, Mississippian
kn
Kandik River sedimentary overlap assemblage
east-central Alaska
Late Triassic, Jurassic, Early Cretaceous
KOO
Omolon terrane
southeastern part of Russian Northeast
Archean to Devonian
Archean, Proterozoic, Cambrian, Ordovician, Silurian, Devonian
KOL
Eropol subterrane of Oloy terrane
north- to east-central part of Russian Northeast
KOB
Beryozovka terrane
RB
Ruby terrane
northern west-central Alaska
Late Proterozoic to Devonian
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian
cm
Carmacks volcanic field
northern Canadian Cordillera
Late Cretaceous
Ks
YT
Yukon-Tanana terrane
east-central Alaska, southeastern Alaska, and western Canadian Cordillera
cf
Cordilleran sedimentary foreland basin
U.S.A. Pacific Northwest and Canadian Cordillera
Jurassic to Tertiary
Late Jurassic to early Tertiary
Late Jurassic, Cretaceous, Early Tertiary
SM
Slide Mountain terrane
east-central part of Canadian Cordillera
Devonian to Permian
Devonian, Mississippian, Pennsylvanian, Permian
CZ
Crazy Mountains terrane
SV
Seventymile terrane
east-Central Alaska
Mississippian to Triassic
Mississippian, Pennsylvanian, Permian, Triassic
NSS
North Asian Craton - Stanovoy block
southern part of North Asian Craton
Archean and Mesozoic
Archean, Jurassic, Cretaceous
CA
Cassiar terrane
eastern part of Canadian Cordillera
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Permian, Triassic
WS
Wickersham terrane
Cambrian
ST
Stikinia terrane
southeastern Alaska and west-central Canadian Cordillera
LG
Livengood terrane
Cambrian to Devonian
Cambrian, Ordovician, Silurian, Devonian
KOAC
Aluchin terrane
km
Kuskokwim Mountains sedimentary, volcanic, and plutonic belt
early Tertiary and Late Cretaceous overlap assemblage
southwestern Alaska
Late Cretaceous and early Tertiary
Late Cretaceous, Early Tertiary
OH
Okhotsk terrane
Archean to Jurassic
Archean, Proterozoic, Cambrian, Ordovician, Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
cn
Coast-North Cascade plutonic belt
southeastern Alaska, western Canadian Cordillera, and northern U.S.A. Pacific Northwest
UB
Uniya-Bom terrane
KOY
Yarakvaam terrane
GR
Gar terrane
Late Proterozoic and Mesozoic
Late Proterozoic and Triassic
Late Proterozoic, Triassic
MM
Mamyn terrane
continental margin arc terrane
Archean and Proterozoic
Archean, Proterozoic
VL
Viliga terrane
East-central part of Russian Northeast
Mississippian to Jurassic
Mississippian, Pennsylvanian, Permian, Triassic, Jurassic
KY
Koyukuk terrane
west-central Alaska
VE
Vel'may terrane
Triassic
MA
Manley terrane
Triassic to Cretaceous
Triassic, Jurassic, Cretaceous
DY
Dorsey terrane
ua
Upper Amur sedimentary assemblage
Jurassic
QN
Quesnellia terrane
central part of Canadian Cordillera
tt
Tahtsa-Twin Sisters-Francois Lake magmatic assemblage
NS
Nora-Sukhotin terrane
Proterozoic, Silurian, Devonian, Mississippian
ko
Khingan-Okhotsk volcanic-plutonic belt
CC
Cache Creek terrane
WY
Windy terrane
metamorphic terrane
central and eastern Alaska Range, Alaska
Silurian to Cretaceous
Silurian, Triassic, Jurassic, Cretaceous
SD
Seward terrane
Seward Peninsula, Alaska and Chukotsk Peninsula, Northeastern Russian Northeast
Late Proterozoic to Pennsylvanian
Late Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian
WP
West Pekulney terrane
Archean, Permian, Jurassic
LN
Lan terrane
Cambrian to Triassic
Cambrian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic
bs
Bering Sea volcanic belt
Quaternary and late Tertiary overlap assemblage
Bering Sea, Seward Peninsula, and southwestern Alaska
late Tertiary and Quaternary
Late Tertiary, Quaternary
sk
Skeena sedimentary assemblage
northern British Columbia, Canadian Cordillera
Early Cretaceous
KO
Kootenay terrane
southeastern part of Canadian Cordillera
Cambrian to Permian
Cambrian, Ordovician, Devonian, Mississippian, Permian
BL
Baladek terrane
Late Proterozoic, Cambrian, Ordovician, Mississippian, Triassic, Jurassic
MO
Monashee terrane
Proterozoic and Cambrian
Proterozoic, Cambrian
PK
Pekul'ney terrane
bo
Bowser sedimentary assemblage
central and southern Canadian Cordillera
ns
Nelson plutonic suite
southeastern Canadian Cordillera
kk
Kamchatka-Koryak volcanic belt
Kamchatka Peninsula and eastern Russian Northeast
Late Cretaceous to Miocene
Late Cretaceous, Early Tertiary, Middle Tertiary
NX
Nixon Fork terrane
central and west-central Alaska
Proterozoic, Cambrian, Ordovician, Silurian, Devonian, Permian
pn
Penzhina sedimentary basin
Middle and Late Cretaceous
cb
Columbia River Basalt Group
U.S.A. Pacific Northwest and southern and central Canadian Cordillera
Tertiary
Miocene
WR
Wrangellia superterrane
southern Alaska, southeastern Alaska, and western Canadian Cordillera
gg
Gravina-Nutzotin-Gambier volcanic-plutonic-sedimentary belt
eastern-southern Alaska, southeastern Alaska, and Canadian Cordillera
ZL
Zolotogorskiy terrane
Devonian to Cretaceous
Devonian, Mississippian, Pennsylvanian, Permian, Jurassic, Cretaceous
ML
Maclaren terrane
eastern Alaska Range, Alaska
wr
Wrangell volcanic field
eastern-southern Alaska
Tertiary to Recent
middle Tertiary to Recent
Middle Tertiary, Late Tertiary, Quaternary
YO
York terrane
western Seward Peninsula, northwestern Alaska
Ordovician to Mississippian
Ordovician, Silurian, Mississippian
BU
Bureya superterrane
Archean to Cambrian
Archean, Proterozoic, Cambrian
GL
Galam terrane
Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian
MK
McKinley terrane
central Alaska Range, Alaska
Pennsylvanian to Cretaceous
Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous
AY
Ayansk terrane
Ordovician to Permian
Ordovician, Silurian, Devonian, Pennsylvanian, Permian
kh
Kahiltna sedimentary and volcanic assemblage
southern and southwestern Alaska
Late Jurassic and Cretaceous
Late Jurassic, Cretaceous
PA
Penzhina-Anadyr terrane
western part of Koryak Highlands, eastern Russian Northeast
Late Proterozoic, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic
KM
Kony-Murgal terrane
Permian to Cretaceous
Permian, Triassic, Jurassic, Cretaceous
ka
Kamloops volcanic belt
middle Tertiary overlap assemblage
early Tertiary
Early Tertiary
at
Alaska Range-Talkeetna Mountains volcanic-plutonic belt
southern Alaska
DL
Dillinger terrane
MAI
Mainitskiy terrane
to
Torom sedimentary basin
kb
Kuibiveem sedimentary assemblage
kw
Kuskokwim Group
Southwestern Alaska
CG
Chugach terrane
southern and southeastern Alaska
MY
Mystic terrane
central Alaska
Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Triassic
UL
Ulban terrane
AK
Avekova terrane
east-central part of Russian Northeast
Archean, Proterozoic, Devonian, Mississippian, Permian
YA
Yakutat terrane
southern Alaska and northern Gulf of Alaska
TL
Talovsiy terrane
Koryak Highlands, eastern Russian Northeast
PW
Prince William terrane
coastal southern Alaska
Cretaceous and early Tertiary
sf
Sanak-Baranof plutonic belt
BD
Badzhal terrane
MT
Methow terrane
southern Canadian Cordillera and northern U.S.A. Pacific Northwest
sb
Spences Bridge volcanic-plutonic belt
southern British Columbia, Canadian Cordillera
WA
Wallowa terrane
southeastern part of U.S.A. Pacific Northwest
BR
Bridge River terrane
Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous
CD
Cadwallader terrane
southern part of Canadian Cordillera
sp
Sakhalin-Primorye volcanic belt
Sea of Japan and adjacent areas
KI
Kilbuck-Idono terrane
southwestern and west-central Alaska
Late Archean and Early Proterozoic
Late Archean, Early Proterozoic
IZ
Izee terrane
ca
Cascade volcanic-plutonic belt
central and southern Canadian Cordillera and U.S.A. Pacific Northwest
late Eocene to Quaternary
EK
Ekonay terrane
eastern Koryak Highlands, Northeastern Russian Northeast
Paleozoic to Cenozoic
Pennsylvanian to Tertiary
Pennsylvanian to early Tertiary
Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous, Early Tertiary
AV
Alkatvaam terrane
northeastern Koryak Highlands, Russian Northeast
Triassic to Tertiary
Triassic to early Tertiary
Triassic, Jurassic, Cretaceous,  early Tertiary
WK
West Kamchatka terrane
western Kamchatka Peninsula, Koryak Highlands, and Russian Northeast
ia
Interior Alaska volcanic belt
west-central Alaska and Saint Lawrence Island, Alaska
middle Tertiary
Middle Tertiary
CK
Chilliwack River terrane
southern British Columbia, Canadian Cordillera and northern U.S.A. Pacific Northwest
OF
Olds Ferry terrane
al
Aleutian volcanic arc
Alaska Peninsula, Aleutian Islands, and Komandorsky Islands
early Tertiary to Recent
AM
Amur River terrane
YN
Yanranay terrane
eastern part of Russian Northeast
BA
Baker terrane
Permian and Triassic
Permian, Triassic
NA
Nason terrane
north-central part of U.S.A. Pacific Northwest
wk
West Kamchatka sedimentary basin
western Kamchatka Peninsula and adjacent Sea of Okhotsk
EA
Easton terrane
southeastern Canadian Cordillera and northwestern U.S.A. Pacific Northwest
es
East Sikhote-Alin volcanic-plutonic belt
eastern part of Russian Southeast
PR
Pacific Rim terrane
southwestern Canadian Cordillera and northwestern U.S.A. Pacific Northwest
SHT
Shmidt terrane
Sakhalin Island, Russian Southeast
OK
Olyutorka-Kamchatka terrane
Koryak Highlands and Kamchatka Peninsula
sn
Skonun sedimentary assemblage
Queen Charlotte Island, Canadian Cordillera
Miocene and Pliocene
Middle Tertiary, Late Tertiary
gb
Georgia Basin sedimentary assemblage
Late Cretaceous and Tertiary
kc
Central Kamchatka volcanic belt
central Kamchatka Peninsula
Eocene to Quaternary
TG
Togiak terrane
NY
Nyac terrane
ek
East Kamchatka volcanic belt
eastern Kamchatka Peninsula
Pliocene to Recent
SZ
Siletzia terrane
western part of U.S.A. Pacific Northwest
KB
Khabarovsk terrane
east-central part of Russian Southeast
Devonian, Mississippian, Pennsylvanian, Permian, Triassic, Jurassic, Cretaceous
IK
Iruneiskiy terrane
Kamchatka Peninsula
OC
Olympic Core terrane
early and middle Tertiary
Early and Middle Tertiary
KLM
Kiselevka-Manoma terrane
central part of Russian Southeast
VT
Vetlovskiy terrane
ZT
Zhuraviesk-Tumnin terrane
ck
Central Kamchatka volcanic and sedimentary basin
Oligocene to Recent
GS
Grindstone terrane
Permian
HO
Hoh terrane
SMA
Samarka terrane
GD
Goodnews terrane
Ordovician, Devonian, Mississippian, Permian, Triassic, Jurassic
KHA
Khanka superterrane
southern part of Russia Southeast
Cambrian, Ordovician, Silurian, Devonian, Mississippian, Permian, Triassic
KE
Kema terrane
AN
Anui terrane
Ordovician and Silurian
Ordovician, Silurian
LD
Laoelin-Grodekovsk terrane
southwestern part of Russian Southeast
Silurian and Permian
Silurian, Permian
KV
Kamyshovy terrane
WSA
West Sakhalin terrane
ANV
Aniva terrane
oo
Oregon-Olympic sedimentary forearc basin
U.S.A. Pacific Northwest and offshore of Vancouver Island, Canadian Cordillera
Eocene to Miocene
Early Tertiary, Middle Tertiary
NAB
Nabilsky terrane
TR
Terpeniya terrane
SB
Stolbovskoy terrane
northern Kamchatka Peninsula
SR
Sredinnyi-Kamchatka terrane
southern Kamchatka Peninsula
Archean, Proterozoic, Devonian, Mississippian, Pennsylvanian, Permian, Jurassic, Cretaceous
KS
Kamchatskiy Mys terrane
TU
Taukha terrane
southeastern part of Russian Southeast
KRO
Kronotskiy terrane
southeastern Kamchatka Peninsula
GZ
Ganal'skiy terrane
southern part of Kamchatka Peninsula
ejck
East-Japan_Chisima-Kuril volcanic-plutonic belt
Hokkaido Island, Japan: Chishima Islands, Kuril Islands
Neogene to Recent
ih
Ishikari-Tenpoku-Hidaka sedimentary-volcanic basin
Hokkaido Island, Japan
Cretaceous to Recent
Cretaceous and late Paleogene to Recent
Cretaceous, Tertiary, Quaternary
SY
Sorachi-Yezo terrane
HI
Hikada terrane
KK
Kamuikotan terrane
os
Oshima sedimentary-volcanic basin
late Paleogene to Quaternary
OS
Oshima terrane
TO
Tokoro terrane
Jurassic to early Tertiary
Jurassic, Cretaceous, Early Tertiary
NE
Nemuro terrane
Hokkaido Island, Japan, and Lesser Kuril Islands, Russian Southeast