29:
113:
120:
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761:
771:
333:
faults, many residences have been built in the
Tualatin Mountains, though much of the northern portion is undeveloped land within the 5,000-acre (20 km)
580:
616:
178:
69:
626:
462:
112:
650:
357:
flows that were part of the larger
Columbia River basalts. Human settlement goes back 10,000 years to the area's earliest known residents, the
318:
The highest peak in the range is Dixie
Mountain at 1,609 feet (490 m). Other notable peaks include Cornell Mountain at 1,270 feet (390m),
547:
A gravity study through the
Tualatin Mountains, Oregon: Understanding crustal structure and earthquake hazards in the Portland urban area
453:
756:
553:
Landslides in the
Portland, Oregon Metropolitan Area Resulting from the Storm of February 1996: Inventory Map, Database and Evaluation
546:
423:
383:
in the 19th century. The Great Plank Road (Canyon/Jefferson Road) was a major factor in the early growth of the city of
Portland.
28:
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458:
418:
694:
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171:
62:
675:
597:
566:
292:
256:
249:
636:
665:
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284:
164:
689:
448:
364:
660:
684:
334:
228:
611:
715:
730:
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367:(the Sunset Highway) is the principal transportation link through the hills, traveling through the
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725:
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323:
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390:
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750:
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549:(R. Blakely, K. Cruikshank, A. Johnson, M. Beeson, K. Walsh, & R. Wells, 2001)
606:
372:
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380:
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84:
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has run roughly parallel to US 26 through the hills, including a section
346:
337:. The landscape, inside and outside the park, is predominantly forested.
349:
era, and range up to over 1,000 feet (300 m). Composed mainly of
558:
405:
The
Tualatin Mountains are home to the transmitter for iHeartMedia's
350:
288:
133:
52:
406:
215:
562:
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at 1,073 feet (327 m), and
Pittock Hill, location of the
555:(S.F. Burns, W.J. Burns, D.H. James, & J.C. Hinkle, 1998)
525:
In Search of
Ancient Oregon: A Geological and Natural History
375:
connecting the agricultural
Tualatin Basin to the navigable
371:, Tanner Creek Canyon, and over the crest of Sylvan Hill.
329:
Despite steep slopes, periodic landslides, and multiple
33:
West slope of the mountains from Beaverton looking north
353:, the mountains were formed by several flows of the
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18:
541:Southwest Hills Resource Protection Plan
463:United States Department of the Interior
435:
283:) are a range on the western border of
16:Mountain range in Oregon, United States
767:Landforms of Washington County, Oregon
443:
441:
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762:Landforms of Multnomah County, Oregon
7:
772:Landforms of Columbia County, Oregon
543:(Portland Bureau of Planning, 1992)
454:Geographic Names Information System
132:location of Tualatin Mountains in
14:
424:Southwest Hills, Portland, Oregon
307:of western Multnomah County and
118:
111:
27:
503:Portland Parks & Recreation
459:United States Geological Survey
291:, United States. A spur of the
419:List of Oregon mountain ranges
1:
345:The hills date from the late
373:This route through the hills
293:Northern Oregon Coast Range
250:Columbia River Basalt Group
788:
57:1,609 ft (490 m)
757:Mountain ranges of Oregon
477:"Tualatin Mountain Range"
395:tunneled deep underground
301:Washington County, Oregon
105:
26:
505:: City of Portland. 2008
523:Bishop, Ellen Morris.
194:45.58056°N 122.79583°W
85:45.52639°N 122.75306°W
612:South Saddle Mountain
527:. Timber Press, 2003.
716:Pacific Coast Ranges
683:Four highest peaks:
644:Five highest peaks:
605:Five highest peaks:
499:"Council Crest Park"
449:"Tualatin Mountains"
295:, they separate the
199:45.58056; -122.79583
90:45.52639; -122.75306
731:Calapooya Mountains
666:Saddle Bag Mountain
379:was developed as a
369:Vista Ridge Tunnels
355:Grande Ronde basalt
271:(also known as the
261:7 million years ago
190: /
81: /
726:Siskiyou Mountains
721:Tualatin Mountains
590:Oregon Coast Range
401:Radio broadcasters
269:Tualatin Mountains
126:Tualatin Mountains
39:Highest point
22:Tualatin Mountains
744:
743:
265:
264:
246:Boring Lava Field
172:Range coordinates
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386:Since 1998, the
377:Willamette River
285:Multnomah County
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165:Multnomah County
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690:Kenyon Mountain
670:
656:Laurel Mountain
631:
627:Saddle Mountain
592:
587:
537:
535:Further reading
532:
531:
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479:. Tualatin Life
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324:Pittock Mansion
277:Southwest Hills
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651:Grass Mountain
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622:Trask Mountain
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617:Larch Mountain
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391:MAX Light Rail
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305:Portland Basin
297:Tualatin Basin
263:
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241:Volcanic field
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47:Dixie Mountain
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695:Bear Mountain
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685:Bone Mountain
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365:U.S. Route 26
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320:Council Crest
316:
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257:Last eruption
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229:Mountain type
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218: Linnton
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148:United States
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736:Oregon Coast
720:
700:Buzzard Rock
661:Prairie Peak
524:
519:
507:. Retrieved
493:
481:. Retrieved
471:
452:
404:
385:
363:
344:
328:
317:
309:Clark County
276:
272:
268:
266:
607:Rogers Peak
335:Forest Park
303:, from the
197: /
185:122°47′45″W
88: /
76:122°45′11″W
63:Coordinates
751:Categories
646:Marys Peak
430:References
381:plank road
331:earthquake
313:Washington
273:West Hills
234:Lava flows
182:45°34′50″N
73:45°31′35″N
388:west side
101:Geography
53:Elevation
709:See also
676:Southern
598:Northern
509:June 20,
483:June 20,
413:See also
361:people.
347:Cenozoic
281:Portland
211:Topo map
161:District
637:Central
359:Chinook
341:History
223:Geology
145:Country
351:basalt
289:Oregon
156:Oregon
134:Oregon
153:State
511:2011
485:2011
407:KLTH
267:The
216:USGS
44:Peak
299:of
279:of
275:or
753::
501:.
461:,
457:.
451:.
438:^
409:.
397:.
326:.
315:.
311:,
287:,
248:,
582:e
575:t
568:v
513:.
487:.
465:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
