Mid-Oceanic Ridge Earthquakes along faults Rift valley Oceanic crust Faults Basaltic magma will form seabed Transform fault South Rift Mid-Ocean America Ridge Atlantic Ocean Africa Continental crust Oceanic crust Rising magma -43°W Figure 3.20 The Mid-Atlantic Ridge, showing its conformance to the coastlines of the adjacent continents. 27°N The first inset shows a detail of the ridge generated from side-scan sonar data-the central rift is clearly visible. Red and orange colors indicate the crest of the ridge; dark blue, the deeper seabed on either side. The second insert shows the location of the ridge and associated valley in the Atlantic. (Transform faults are explained in Figure 3.25)

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
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Why do you think the mid-ocean ridges are higher than the surrounding seabed?

Mid-Oceanic Ridge
Earthquakes
along faults
Rift
valley
Oceanic
crust
Faults
Basaltic magma
will form seabed
Transform
fault
South
Rift
Mid-Ocean
America
Ridge
Atlantic Ocean
Africa
Continental
crust
Oceanic
crust
Rising
magma
-43°W
Figure 3.20 The Mid-Atlantic Ridge,
showing its conformance to the
coastlines of the adjacent continents.
27°N
The first inset shows a detail of the
ridge generated from side-scan sonar
data-the central rift is clearly visible.
Red and orange colors indicate the
crest of the ridge; dark blue, the
deeper seabed on either side. The
second insert shows the location of
the ridge and associated valley in
the Atlantic. (Transform faults are
explained in Figure 3.25)
Transcribed Image Text:Mid-Oceanic Ridge Earthquakes along faults Rift valley Oceanic crust Faults Basaltic magma will form seabed Transform fault South Rift Mid-Ocean America Ridge Atlantic Ocean Africa Continental crust Oceanic crust Rising magma -43°W Figure 3.20 The Mid-Atlantic Ridge, showing its conformance to the coastlines of the adjacent continents. 27°N The first inset shows a detail of the ridge generated from side-scan sonar data-the central rift is clearly visible. Red and orange colors indicate the crest of the ridge; dark blue, the deeper seabed on either side. The second insert shows the location of the ridge and associated valley in the Atlantic. (Transform faults are explained in Figure 3.25)
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