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Transcript 
TARBUCK.TRANS.06.QXD
9/8/04
9:20 AM
Page 92
T-92
Earth’s layered structure
Continental
crust
Lithosphere
Oceanic crust
Asthenosphere
500
Lithosphere
(sphere of rock)
Depth (km)
1000
200
Depth (km)
660
100
Lower
mantle
Asthenosphere
(weak sphere)
1500
300
400
660
pe
Up
Lithosphere
5–250 km
Lower mantle
Mantle
Core
Outer
core
Inner
core
2890
km
3480
km
Earth Science
by Edward J. Tarbuck / Frederick K. Lutgens
t le
an
rm
Crust 5–70 km
1220
km
2260
km
2230
km
660
km
 2006 by Prentice-Hall, Inc.
A Pearson Education Company
Upper Saddle River, New Jersey 07458
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