| Alaska |
Alexander |
Oceanic arc |
600 Ma |
Collisional/StrSlip |
140 Ma |
Peninsula arc |
| Alaska |
Brooks-Northslope1 |
Passive margin |
2000 Ma |
|
|
Brookian crust, Baltica origin |
| Alaska |
Brooks-Northslope Mag |
Passive margin |
2000 Ma |
|
|
Brookian crust, Baltica origin |
| Alaska |
Brooks Range |
Passive margin |
2000 Ma |
|
|
Brookian crust, Baltica origin |
| Alaska |
Brooks-Seward |
Passive margin |
2000 Ma |
|
|
Brookian crust, Baltica origin |
| Alaska |
Chugach |
Accretionary wedge |
75-0 Ma |
Underthrusting |
75-0 Ma |
Forearc fragment, Peninsula arc |
| Alaska |
Chulitna-Broad Pass |
Oceanic arc |
380 Ma |
Collisional/StrSlip |
80 Ma |
Peninsula arc |
| Alaska |
Farewell buried |
Back-arc basin |
1000 Ma |
|
|
Farewell platform, Baltica origin |
| Alaska |
Farewell-Innoko-Idono |
Continental arc |
2600-2100 Ma |
Collisional |
135-115 Ma |
Farewell platform, Baltica origin |
| Alaska |
Farewell-Kilbuck |
Continental arc |
2600-2100 Ma |
Collisional |
135-115 Ma |
Farewell platform, continent-marginal arc |
| Alaska |
Farewell-McGrath |
Passive margin |
2000 Ma |
|
|
Farewell platform, Baltica origin |
| Alaska |
Koyukuk-Anvik |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk-Bethel Basin |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc, setting poorly constrained |
| Alaska |
Koyukuk-Holycross |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk-Indian Mountain |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk north |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk-Selawik |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk-Toksook |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Koyukuk-Yukon delta |
Oceanic arc |
175-125 Ma |
Collisional |
135-115 Ma |
Koyukuk arc |
| Alaska |
Laurentia triangle |
Continental arc |
2450-1850 Ma |
Collisional |
1.85 Ga |
Laurentian origin |
| Alaska |
Nyac |
Oceanic arc |
170-110 Ma |
Collisional |
135-110 Ma |
Walrus arc |
| Alaska |
Peninsular-Bristol |
Oceanic arc |
215-185 Ma |
Collisional |
80 Ma |
Peninsula arc |
| Alaska |
Peninsular-Iliamna |
Oceanic arc |
310 Ma |
Collisional |
80 Ma |
Peninsula arc |
| Alaska |
Peninsular-Talkeetna |
Oceanic arc |
215-185 Ma |
Collisional |
80 Ma |
Peninsula arc |
| Alaska |
Peninsular-Tlikakila |
Accretionary wedge |
180 Ma |
Underthrusting |
80 Ma |
Forearc fragment, Penninsula arc |
| Alaska |
Porcupine |
Passive margin |
2000-1000 Ma |
|
1-2 Ga |
Laurentian origin, setting, ages poorly constrained |
| Alaska |
Ruby |
Passive margin |
2000 Ma |
|
|
Laurentian and Baltica origins |
| Alaska |
Taku |
Passive margin |
380 Ma |
Collisional |
140 Ma |
Continental rise |
| Alaska |
Unalakleet north |
Back-arc basin |
175-125 Ma |
Collisional |
135-115 Ma |
Back-arc basin? Koyukuk arc |
| Alaska |
Unalakleet south |
Back-arc basin |
175-125 Ma |
Collisional |
135-115 Ma |
Related to Koyukuk arc |
| Alaska |
Walrus-Goodnews |
Accretionary wedge |
280-135 Ma |
Collisional |
135-115 Ma |
Forearc fragment, Walrus arc |
| Alaska |
Walrus-Togiak |
Oceanic arc |
225-135 Ma |
Collisional |
135-115 Ma |
Walrus arc |
| Alaska |
Wickersham |
Passive margin |
700-350 Ma |
Collisional/StrSlip |
215 Ma |
Continental rise, Laurentian origin |
| Alaska |
Windy-McKinley |
Passive margin |
275 Ma |
Collisional/StrSlip |
100 Ma |
Continental rise, Farewell platform |
| Alaska |
Windy-McKinley |
Passive margin |
275 Ma |
Collisional/StrSlip |
100 Ma |
Continental rise, Farewell platform |
| Alaska |
Wrangellia |
Oceanic arc |
310 Ma |
Collisional |
80 Ma |
Peninsula arc |
| Alaska |
Yakutat-Dangerous |
Large igneous province |
55 Ma |
Collisional/StrSlip |
50-0 Ma |
Oceanic plateau, Yakutat block |
| Alaska |
Yakutat-Malaspina |
Large igneous province |
55 Ma |
Collisional/StrSlip |
50-0 Ma |
Oceanic plateau, Yakutat block |
| Alaska |
Yakutat-Pamplona |
Large igneous province |
55 Ma |
Collisional/StrSlip |
50-0 Ma |
Oceanic plateau, Yakutat block |
| Alaska |
Yukon-Tanana lower |
Passive margin |
700-350 Ma |
Collisional/StrSlip |
215 Ma |
Continental rise |
| Alaska |
Yukon-Tanana upper |
Passive margin |
700-350 Ma |
Collisional/StrSlip |
215 Ma |
Continental rise, Laurentian origin |
| Central and Southwest |
Dakota |
Intracratonic mobile belt |
1848-1750 Ma |
|
|
Orogenic events 1.78-1.74 G; post-tectonic magmatism and cratonization at 1.715 Ga; 50-60 m.y. younger than Trans-Hudson orogenic events in Canada |
| Central and Southwest |
Great Plains |
Lateral-extensional orogen |
1800-1720 Ma |
|
1.71-1.68 Ga |
|
| Central and Southwest |
Mazatzal |
Lateral-extensional orogen |
1720-1650 Ma |
|
1.65-1.62 Ga |
|
| Central and Southwest |
Mid-continent |
Intracontinental rift |
1100-1000 Ma |
|
|
|
| Central and Southwest |
Mid-continent |
Intracontinental rift |
1100-1000 Ma |
|
|
|
| Central and Southwest |
Minnesota River |
Sialic protocontinent |
3600-3000 Ma |
|
|
Cratonized ~2500 Ma |
| Central and Southwest |
Minnesota River |
Sialic protocontinent |
3600-3000 Ma |
|
|
Cratonized ~2500 Ma |
| Central and Southwest |
Mojave |
Lateral-extensional orogen |
1840 Ma |
|
|
Older crustal component >2.0; crustal growth ages 1.84, 1.78-1.76 Ga; includes Elves Chasm gneiss |
| Central and Southwest |
Superior |
Sialic protocontinent |
2750-2600 Ma |
Collisional |
2.7-2.5 Ga |
S-vergent collision with Minnesota River terrane, Great Lakes tectonic zone; Cratonized ~2500 Ma |
| Central and Southwest |
Superior |
Sialic protocontinent |
2750-2600 Ma |
Collisional |
2.7-2.5 Ga |
S-vergent collision with Minnesota River terrane, Great Lakes tectonic zone; Cratonized ~2500 Ma |
| Central and Southwest |
Superior |
Sialic protocontinent |
2750-2600 Ma |
Collisional |
2.7-2.5 Ga |
S-vergent collision with Minnesota River terrane, Great Lakes tectonic zone; Cratonized ~2500 Ma |
| Gulf Coast |
Sabine |
Continental arc |
360-299 Ma |
Collisional |
325-309 Ma |
Late Paleozoic Gondwana microcontinent origin; includes Sabine volcanic arc and Yucatan platform |
| Gulf Coast |
Suwannee-Wiggins |
Passive margin |
530-511 Ma |
Collisional |
325-300 Ma |
Converted to extensional accretionary orogen (forearc basin) |
| Northern Rocky Mountains |
Farmington-Selway |
Intracratonic mobile belt |
1670 Ma |
|
|
Possibly 2 extensional episodes, 2.45 Ga and 1.67 Ga |
| Northern Rocky Mountains |
Great Falls |
Intracratonic mobile belt |
1870-1790 Ma |
|
|
Orogenic events superposed 1.77-1.71 Ga |
| Northern Rocky Mountains |
Grouse Creek |
Sialic protocontinent |
2700-2600 Ma |
|
|
2.57 Ga Albion-Grouse Cr; 2.674 Ga, 2.608 Ga Boulder-Pioneer |
| Northern Rocky Mountains |
Kootenay |
Passive margin |
780-500 Ma |
Collisional |
Jurassic |
Basement age Neoproterozoic to Early Paleozoic |
| Northern Rocky Mountains |
Medicine Hat |
Sialic protocontinent |
3300-2600 Ma |
|
|
|
| Northern Rocky Mountains |
Okanogan |
Oceanic arc |
320-250 Ma |
Collisional |
Mesozoic |
Continent-marginal island arc, Carboniferous-Permian |
| Northern Rocky Mountains |
Pend Oreille |
Sialic protocontinent |
2670-2650 Ma |
|
|
|
| Northern Rocky Mountains |
Wallace |
Intracratonic mobile belt |
1870 Ma |
|
|
1.87 Ga orthogneiss; 1.79 Ga anorthosite |
| Northern Rocky Mountains |
Western Quesnellia |
Oceanic arc |
385-175 Ma |
Collisional |
170 Ma |
Continent-marginal island arc |
| Northern Rocky Mountains |
Wyoming |
Sialic protocontinent |
3500-3200 Ma |
|
|
Includes 3.5-3.2 Ga Montana metasedimentary province; 3.0-2.5 Ga Beartooth-Bighorn magmatic zone, 2.9 Ga Southern accreted terranes; cratonized 3.0-2.8 Ga |
| Southeastern Laurentia and Appalachians |
Carolinia |
Oceanic arc |
670 Ma |
Collisional |
Devonian |
peri-Gondwana origin |
| Southeastern Laurentia and Appalachians |
Charleston |
Oceanic arc |
1000-542 Ma |
Collisional |
|
peri-Gondwana origin, Neoproterozoic |
| Southeastern Laurentia and Appalachians |
ECMA |
Large igneous province |
228-176 Ma |
Magmatic |
|
Late Triassic-Early Jurassic; crustal boundary based on geophysical feature |
| Southeastern Laurentia and Appalachians |
Ganderia |
Passive margin |
630-488 Ma |
Collisional |
455-423 Ma |
Neoproterozoic-Silurian (or younger); Converted to extensional accretionary orogen |
| Southeastern Laurentia and Appalachians |
Laurentides |
Passive margin |
1250-750 Ma |
Collisional |
Late Ordovician-Early Silurian |
peri-Gondwana origin, converted to extensional accretionary orogen |
| Southeastern Laurentia and Appalachians |
Meguma |
Passive margin |
542-472 Ma |
Transpressional |
Famennian |
peri-Gondwana origin, Cambrian-Early Ordovician; converted to rift basin |
| Southeastern Laurentia and Appalachians |
Piedmontia |
Extensional accretionary orogen |
1000-416 Ma |
Collisional |
Devonian and younger |
Laurentian origin, Neoproterozoic-Silurian (or younger) |
| Southeastern Laurentia and Appalachians |
SCAB |
Extensional accretionary orogen |
1400-1100 Ma |
Collisional |
1.1 Ga |
Amazonia origin, Mesoproterozoic; AL-NY lineament is boundary? |
| Southeastern Laurentia and Appalachians |
Shawnee |
Lateral-extensional orogen |
1550-1350 Ma |
in situ cratonization |
1.45-1.35 |
New name for Granite/rhyolite (not in literature) |
| Western Cordillera |
Calaveras-Baker |
Accretionary wedge |
315-215 Ma |
Collisional |
135 Ma |
|
| Western Cordillera |
Cascadia |
Accretionary wedge |
50-0 Ma |
Underthrusting |
50-0 Ma |
Some authors (Brandon and others, 1998) suggest onset of accretion at 35 Ma |
| Western Cordillera |
Foothills-Wallowa |
Oceanic arc |
280-165 Ma |
Collisional |
135 Ma |
Basement to arc as old as 300 Ma in Klamath Mtns (Saleeby, 1982) |
| Western Cordillera |
Franciscan |
Accretionary wedge |
165-50 Ma |
Underthrusting |
165-50 Ma |
In NW CA, accreted rocks as young as 15 Ma (McLaughlin and others, 1982) |
| Western Cordillera |
Golconda-Roberts Mountain |
Accretionary wedge |
380-350 Ma |
Collisional |
350 Ma |
|
| Western Cordillera |
Great Valley |
Oceanic basin |
175-165 Ma |
Magmatic? |
165 Ma |
|
| Western Cordillera |
Salinia |
Lateral-extensional orogen |
1700 Ma |
Strike-slip |
30-0 Ma |
Fragment of Mohave domain? |
| Western Cordillera |
Shoofly-Olds Ferry |
Oceanic arc |
365-187 Ma |
Collisional |
135 Ma |
|
| Western Cordillera |
Siletzia |
Oceanic basin |
60-50 Ma |
Collisional |
50 Ma |
Converted to continental arc. Some authors (Schmandt and Humphreys, 2011) suggest accretion at 55 Ma |
