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in core samples from both side and main channels, indicating that each turbidity current was likely caused at the same time, by the same event which may be the
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G.B.Griggs, A.G.CareyJr., L.D.Kulm (April 1969). "Deep-sea sedimentation and sediment-fauna interaction in
Cascadia Channel and on Cascadia Abyssal Plain".
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425:"Deep-Sea Turbidites as Guides to Holocene Earthquake History at the Cascadia Subduction Zone— Alternative Views for a Seismic-Hazard Workshop"
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181:, which may begin as a slide or slump, continue as a debris flow, and change into a turbidity current as fluid content increases down slope.
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121:. At this time, apparently the channel built up by turbidity current that proceeded south, along the western part of the
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157:. In Cascadia Channel, burrowing organisms have left many well-preserved burrows of distinct sizes and shapes in
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Gary B. Griggs (September 20, 1973). "Origin and
Development of Cascadia Deep-Sea Channel".
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in the south. The channel is believed to be over 2,200 kilometres (1,400 mi) long.
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from the shore deposited on either the upper slope or the outer shelf, which initiated
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Headed north-south, Cascadia
Channel initially formed on the eastern flank of the
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animal population is four times as abundant compared to the surrounding
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sediment continued to flow, both down the
Cascade channel and the
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suggested that these turbidity currents originated during great
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Cascadia
Paleoseismic History Based on Turbidite Stratigraphy
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Of the turbidites, large storms are not the likely source.
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393:"Cascadia Channel: The Anatomy of a Deep-Sea Channel"
42:. Notably, Cascadia Channel has tributaries, akin to
187:evidence for the occurrence of earthquakes on the
49:Cascadia Channel has two contributing tributaries—
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16:Extensive deep-sea channel of the Pacific Ocean
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488:Deep Sea Research and Oceanographic Abstracts
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520:: CS1 maint: multiple names: authors list (
423:Brian F. Atwater and Gary B. Griggs (2012).
73:, which was actively spreading. In the late
117:features. This led to the initiation of
89:sediment, which horizontally deposited
621:Submarine canyons of the Pacific Ocean
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538:. Pacific Northwest Seismic Reference
81:basement was covered by transparent
26:currently known (as of 1969) of the
261:, reached Cascadia Channel via the
53:from the north, and the outflow of
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616:Geography of the Pacific Northwest
272:
235:. There is a consistent number of
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217:mass movements that can initiate
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452:Journal of Geophysical Research
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626:Coastal and oceanic landforms
555:External links and references
374:
133:, turbidity current from the
508:10.1016/0011-7471(69)90071-0
169:An earthquake can trigger a
125:, also from the west of the
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226:Geological Survey of Canada
224:In 1990, John Adams of the
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249:Ash from the eruption of
304:Cascadia Subduction Zone
253:, which gave modern-day
241:1700 Cascadia earthquake
189:Cascadia Subduction Zone
473:10.1029/JC078i027p06325
591:43.50000°N 130.00000°W
561:Undersea Features page
123:Cascadia abyssal plain
95:Pleistocene glaciation
32:Cascadia Abyssal Plain
22:is the most extensive
314:Father Charles Canyon
93:covered. During late
631:Submarine topography
596:43.50000; -130.00000
536:"Turbidite evidence"
339:Juan de Fuca Channel
149:In the channel, the
139:Blanco Fracture Zone
97:and the lowering of
51:Juan de Fuca Channel
36:Blanco Fracture Zone
30:. It extends across
587: /
500:1969DSRA...16..157G
465:1973JGR....78.6325G
391:Gary Bruce Griggs.
329:Juan de Fuca Canyon
40:Tufts Abyssal Plain
334:Juan de Fuca Plate
219:turbidity currents
161:current deposits.
155:Juan de Fuca Plate
111:turbidity currents
71:Juan de Fuca Ridge
459:(27): 6325–6339.
267:submarine canyons
263:continental shelf
201:deep-sea channels
44:river tributaries
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309:Clayoquot Canyon
299:Cascadia Channel
175:submarine canyon
59:Willapa Channels
24:deep-sea channel
20:Cascadia Channel
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364:Quinault Canyon
359:Quileute Canyon
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273:Local geography
230:subduction zone
177:there may be a
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165:Turbidite Flows
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171:turbidite flow
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145:Marine Biology
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135:Columbia River
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542:14 September
540:. Retrieved
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516:cite journal
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434:11 September
432:. Retrieved
399:. Retrieved
324:Guide Canyon
319:Grays Canyon
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251:Mount Mazama
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213:can set off
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205:abyssal fans
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582:130°00′00″W
401:4 September
354:Nitinat Fan
289:Astoria Fan
279:Abyssal fan
259:Crater Lake
233:earthquakes
211:Earthquakes
127:Astoria Fan
119:downcutting
87:hemipelagic
38:, and into
610:Categories
579:43°30′00″N
375:References
237:turbidites
197:Washington
91:turbidites
215:submarine
159:turbidity
115:erosional
99:sea level
65:Formation
185:Geologic
131:Holocene
79:volcanic
75:Cenozoic
55:Quinault
496:Bibcode
461:Bibcode
191:is off
151:benthic
101:, much
83:pelagic
430:. USGS
255:Oregon
193:Oregon
107:gravel
77:, the
428:(PDF)
396:(PDF)
544:2017
522:link
436:2017
403:2017
265:and
257:its
203:and
195:and
105:and
103:sand
85:and
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504:doi
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.