?????????????????????????????????????? ??? ????????????????????????????????????????????????????????????????????????????????????????????? (??? Tarbuck and Lutgens, 1993)

1
?????????(??????????????????????)
2
A
B

1. ??????????????????????????????????????????????????
   ??????????????????????????????????????????
2. ?????????????????????????????????????? ???
   ??????????????????????????????????????????????????
   ??????????????????????????????????????????? (???
   Tarbuck and Lutgens, 1993)

3
seismic waves
4
Model 1
5
Model 2
6

• ????????????????????????????????????????????

7
??????????????????????????? (??? Tarbuck and
Lutgens, 1993)
8
???????????????????????? ????????????????????????
??????????????? ???????
9
????????????????????????????????????????
?????????????????????????????????
????????????????????????????? (???????????
Tarbuck and Lutgens, 1993)
10
Crust

• Oceanic crust
• Thickness 10-12 km
• Seismic P-wave velocity 7 km/s
• Probable composition Basalt underlain by gabbro

Mohorovicic discontinuity
Continental crust Thickness 30-50 km Seismic
P-wave velocity 6 km/s Probable composition
Granite, other plutonic rocks, schist, gneiss
11
Mantle

• Upper Mantle
• Depth 400 km
• Seismic P-wave velocity 8 km/s
• Probable composition Ultramafic rock such as
  peridotite
• Regional Heterogeneous
• Lithosphere
• Asthenosphere

12
????????????????????????????????????????
?????????????????????????????????
????????????????????????????? (???????????
Tarbuck and Lutgens, 1993)
13
Mantle

• Transition Zone
• Depth 400-1,000 km
• Velocity increases rapidly
• Lower Mantle
• Depth 1,000-2,900 km
• Uniform
• Deep Mantle
• Gutenberg Discontinuity

14
????????????????????????????????????????
?????????????????????????????????
????????????????????????????? (???????????
Tarbuck and Lutgens, 1993)
15
Core

• Outer Core
• Depth 2,900-5,200 km
• Lehmann Discontinuity
• Inner Core
• Depth 5,200-6,300 km
• Uniform

16
??????????????????????? (Chemical Composition)
?????????????????????????????????????????????????
??????? ????????????????????????
!! ??????????????????????????????????????????????
????????? ????????????????? ??????????????????????
?????????????????? (Extraterrestial E.T.)
?????????????????????????????????????
(Meteorites) ???????
17
(No Transcript)
18
1. ????????????????????
?????????????????????????????????????
??????????????? (Ni - Fe Metallic Alloy) ????
????????????????????????????????
??????????????????????????????????????? ?
19
2. ?????????????????????
20
3. ??????????????????????

• SiO2, Al2O2, FeO, MgO
• ????????????????????????????????????????? Si ???
  Al ???????? ????? (SIAL) ????
  ????????????????????????????????????????
• ???????????????????????????????????? Fe, Mg ???
  Al, Si ?????????????????????? ???? (SIMA) ????
  ????????????????????????????????????

21
?????????????????????????????????????????
1. ??????????? (Lithosphere) ????????????????????
??????????????????????? (rigid solid)?????????????
????????????????????????????????????????
????????????????????????????? 100 ???????? 2.
?????????????? (Asthenosphere) ?????????????????
100 ???????? ?????????????????????
?????????????????????? ????????????????
22
????????????????????? ? ????????? ???????????
????????????????? (??? Tarbuck and Lutgens,
1993)
23
??????????????????????????????????????????????
(??? Tarbuck and Lutgens, 1993)