34:
25:
45:
54:
398:
304:
Amato, J. M.; Aleinikoff, J. N.; Akinin, V. V.; McClelland, W. C.; Toro, J.; Dumoulin, J. A.; Till, A. B. (2014). "Age, chemistry, and correlations of
Neoproterozoic–Devonian igneous rocks of the Arctic Alaska–Chukotka terrane: An overview with new U-Pb ages. Reconstruction of a Late Proterozoic to
209:
of the AAC remains enigmatic, hence also details about the microcontinent's ancient, tectonic history. It is, nevertheless, clear from
Neoproterozoic igneous rocks that the AAC was not originally part of Laurentia, but most likely Baltica. The microcontinent was obviously involved in a series of
363:"A synthesis of Jurassic and Early Cretaceous crustal evolution along the southern margin of the Arctic Alaska–Chukotka microplate and implications for defining tectonic boundaries active during opening of Arctic Ocean basins"
439:
458:
305:
Devonian
Continental Margin Sequence, Northern Alaska, its Paleogeographic Significance, and Contained Base-Metal Sulfide Deposits".
432:
62:
The Arctic Alaska-Chukotka terrane (in blue) at 150, 100, 50, and 0 Ma. View centered on the North Pole.
468:
124:
continental fragments now dispersed around the Arctic Ocean; some of which possibly formed the continent
425:
326:
Strauss, J. V.; Hoiland, C. W.; Ward, W. P.; Johnson, B. G.; Nelson, L. L.; McClelland, W. C. (2017).
168:
148:
97:
206:
164:
93:
81:
33:
24:
463:
156:
44:
374:
342:
314:
223:
172:
89:
53:
328:"Orogen transplant: Taconic–Caledonian arc magmatism in the central Brooks Range of Alaska"
160:
197:
histories are apparently distinct. Whether or not they were separate blocks before the
409:
202:
117:
101:
77:
452:
186:
132:
16:
Terrane that includes parts of Alaska, Siberia and the continental shelf between them
397:
109:
85:
182:
152:
113:
318:
105:
327:
144:
121:
219:
198:
194:
190:
405:
175:
140:
136:
125:
116:
seas. Comparable in size to
Greenland, the AAC is the largest of the
346:
379:
362:
277:, Arctic Alaska and Chukotka—One Microplate or Two?, pp. 232–233
286:
189:
histories of Arctic Alaska and
Chukotka are similar but their
155:. The AAC has a complex geological history that includes the
250:
413:
104:
in eastern
Siberia; and the continental shelves of the
246:
244:
151:continents, as well as the ocean floor of the
433:
8:
307:Geological Society of America Special Papers
265:, Arctic Alaska–Chukotka Microplate, p. 220
440:
426:
378:
215:
131:The AAC originated on the shores of the
240:
7:
394:
392:
274:
262:
14:
396:
52:
43:
32:
23:
210:magmatic events, beginning at
70:Arctic Alaska-Chukotka terrane
1:
211:
412:. You can help Knowledge by
205:is disputed. The age of the
459:Geology of the Arctic Ocean
253:, Introduction, pp. 649–652
139:made of fragments from the
80:that today encompasses the
485:
391:
92:of northern Alaska; the
319:10.1130/2014.2506(02)
361:Till, A. B. (2016).
218:, and ending in the
251:Strauss et al. 2017
135:and is a composite
98:New Siberia Islands
153:Panthalassic ocean
94:Chukotka Peninsula
421:
420:
287:Amato et al. 2014
476:
442:
435:
428:
400:
393:
384:
382:
357:
355:
353:
347:10.1130/b31593.1
341:(5–6): 649–676.
332:
322:
290:
284:
278:
272:
266:
260:
254:
248:
217:
213:
90:Seward Peninsula
56:
47:
36:
27:
484:
483:
479:
478:
477:
475:
474:
473:
449:
448:
447:
446:
389:
387:
360:
351:
349:
330:
325:
303:
299:
294:
293:
285:
281:
273:
269:
261:
257:
249:
242:
237:
232:
201:opening of the
66:
65:
64:
63:
59:
58:
57:
49:
48:
39:
38:
37:
29:
28:
17:
12:
11:
5:
482:
480:
472:
471:
466:
461:
451:
450:
445:
444:
437:
430:
422:
419:
418:
401:
386:
385:
380:10.1130/L471.1
373:(3): 219–237.
358:
323:
300:
298:
295:
292:
291:
279:
267:
255:
239:
238:
236:
233:
231:
228:
203:Amerasia Basin
118:Neoproterozoic
102:Wrangel Island
78:microcontinent
61:
60:
51:
50:
42:
41:
40:
31:
30:
22:
21:
20:
19:
18:
15:
13:
10:
9:
6:
4:
3:
2:
481:
470:
469:Geology stubs
467:
465:
462:
460:
457:
456:
454:
443:
438:
436:
431:
429:
424:
423:
417:
415:
411:
408:article is a
407:
402:
399:
395:
390:
381:
376:
372:
368:
364:
359:
348:
344:
340:
336:
329:
324:
320:
316:
312:
308:
302:
301:
296:
288:
283:
280:
276:
271:
268:
264:
259:
256:
252:
247:
245:
241:
234:
229:
227:
225:
221:
214:1.6–1.4
208:
204:
200:
196:
192:
188:
187:Carboniferous
184:
179:
177:
174:
170:
166:
162:
158:
154:
150:
146:
142:
138:
134:
133:Iapetus Ocean
129:
127:
123:
119:
115:
111:
107:
103:
99:
95:
91:
87:
83:
79:
75:
71:
55:
46:
35:
26:
414:expanding it
403:
388:
370:
366:
350:. Retrieved
338:
335:GSA Bulletin
334:
310:
306:
282:
270:
258:
180:
130:
86:Brooks Range
73:
69:
67:
367:Lithosphere
183:Proterozoic
173:Ellesmerian
169:Appalachian
82:North Slope
453:Categories
289:, Abstract
230:References
165:Caledonian
313:: 29–57.
275:Till 2016
263:Till 2016
226:orogeny.
176:orogenies
157:Grenville
145:Laurentia
122:Paleozoic
464:Terranes
224:Cadomian
220:Avalonia
207:basement
199:Mesozoic
195:Jurassic
191:Triassic
161:Timanian
110:Beaufort
406:geology
352:19 July
297:Sources
149:Siberia
141:Baltica
137:terrane
126:Arctida
120:–early
114:Chukchi
76:) is a
171:, and
147:, and
112:, and
106:Bering
100:, and
88:, and
404:This
331:(PDF)
235:Notes
410:stub
354:2018
181:The
68:The
375:doi
343:doi
339:129
315:doi
311:506
74:AAC
455::
369:.
365:.
337:.
333:.
309:.
243:^
216:Ga
212:c.
178:.
163:,
159:,
143:,
128:.
108:,
96:,
84:,
441:e
434:t
427:v
416:.
383:.
377::
371:8
356:.
345::
321:.
317::
222:–
193:–
185:–
167:–
72:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
