Why are earthquakes more numerous north of the trench axis?
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
Related questions
Question
Why are earthquakes more numerous north of the trench axis?

Transcribed Image Text:ALEUTLAN IREN CH
Bering Canyos
Umnak Conak Im nal
168
RUSSIA
UNITED STATES
56
NORTH AMERICA PLATE
Bering Sea
75
ALEU†LAN IREN c H
PACIFIC O CEAN
PACIFIC PLATE
68
73
oris Canyon
A
Umpak
Prateau
Canyon
Lidson Bánk
1946
UnglaskaJ
Islands of
Four Mountoins
j00
Yunaska k.
Basin
aska Basin
uam
50
trench
EUTIA
trench axis
A
Rude Kno
1929
100
200
300
400
В
500 kilometers
FIGURE 11.7
Maps of the Aleutian Trench and northern Pacific Ocean basin.
A. Regional map.
B. Detailed tectonic map of the central portion of the Aleutian Trench. The rectangular box bisected by
line A-A' corresponds to the rectangular box in the lower middle portion of the regional map. A-A'
corresponds to the cross section shown in figure I1.8. Scale bar applies to map
В.
a Canyon
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