http:www.paleomag.net

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???????? ????????????????????(http//www.paleomag.
net) ??? ????? 1- Robert F. Butler
Paleomamgnetism Magnetic Domains to Geologic
Terranes http//www.geo.arizona.edu/Paleomag/
book/ 2-??? ????
-?????????????? 3- Evans M E Heller F.
Environmental magnetism Academic Press,
London/San diego, 2003
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????????????
????????,???????????????. ??4?????????? ???????,??
??????????
??
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CT??
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??????? ???????

• ??????????12km,?????????0.2

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??????? ???
???????????????
??
??????
??(km)
??????
??(kb)
??? gt150 km
??????
??? ???
??? gt80 km
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????? ?????????????,?????????????????????????
????
?
??????????????
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4.6?????????????????
??
??
??(km)
??(kp)
? ? ?
150km
???
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1.0???????????? ???????lt80km
?????
??
??
??????
??????
?????
lt80km
??????
??(kp)
??(km)
???
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????,???? ????????? ??????????????? ?????
??????
?????????
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????????-???
???-?????
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???---?????
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???-??????
?????
???????
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?????????????,??????????????,???1???????
??10??-???-?? 12????????? ??8??-?????
??15????  
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600 ????7??? (from 1405 to 1433)
Java
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??????? 1600?-Gilbert
-?????????
William Gilbert
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1838?-Guass (?????)-????
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??????????? 1- ???720-1280???????????9??? 2-
1580?,???Borough?????Dec11.3? 3-
1622?,???Gunter??Dec6.0?, 42?,?????????
5.3?,?????? 4- ?12?,Gellibrand??Dec4.1?,???????
?????,????????????
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?????????? 1- Normam(1576)?????????
??????????????????? 2- ?Normam??,????????????
?????,???????? 3- Gilbert?????????????,??
?????????????. ?????? ?????????,??????????
???????????????,???? ???????????????. 4-
Gilbert(1600)???????????? ???????????????????
? ????,??????????87?
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?????????? ???????8????????????,????1799-1803???
?Humboldt????????????????. ??,?????Gauss(1838)???
???????,??????????????????.
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??????
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?????
?????
???????
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???????????????
???,inclined geocentric dipole ?????????90 ?????
???????????????500??(Pacific basin)
Eccentric dipole. ????????????????????,??
020 nondipole field
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????(????99?????95??????4??1?10E5?)
????(1600?)
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18??-300???-???????? ??????45??
300????????!!! ???? ?????????????????????
???----??? ? ?----???
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??????????? ???? Delesse(1849)??????????????
Folgerhaiter(1899)
??????????
???? David(1904)-----???
Brunhes(1906)--???
Matuyama(1929)-???-?? ????
Runcorn(1955)---?????
Cox(1963)-????????

???? ????
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?????????20??60?????
???????--20??????? ???? ????
????

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????????????? 1-????????? 2-????
3-???? 4-??????????? 5-???????????
6-???? 7-????
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1-???? ?????
Wegener
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??????????
??
??
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??????
????
2.5???????
2.5???????
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2-?????
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??????
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??????????????
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165Ma??????????
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3-????--?????????? 1-?????
Magnetic polarity stratigraphy 2-??????
Rock magnetic stratigraphy 3-???????
Paleointensity magnetic stratigraphy
4-?????????? SV magnetic stratigraphy
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????????
Heller Liu, Nature, 1982
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?????????
Zhu et al., Nature 2004
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4-??????????? ????? 78??????? 
???
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??????
Zhu et al., EPSL, 1994
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??????M/B ??????
??????M/B ??????
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?????????????????????????????????????.????????????
??????????,??? ?????????????????,????????????  
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5-???????????
???660km???????????,???????????????,??????????,???
????????,?????????????????????-??????.
Zhu et al., 2004
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?????????????? ???/???
Hot spot
Morgans mantle plume concept (1972)
Wilson
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????? ??????????????????
Lay et al_1998 Nature
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?????????????,?????????????.?????????????
Exterior too cold
Too Hot
Too Cold
?? ?? ?? ?? ?? ?? ??? ???
???
??
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????????????? ??-????????????
?? ?? ?? ?? ?? ?? ??? ???
???
??
Dynamo 50000nT
Dynamo 300nT
Dynamo 50000nT
Dynamo 2000nT
Dynamo 2000nT
Dynamo 2000nT
Hard to say
No Field No solid inner core
???????????,??????200nT??.??????Dynamo,??????Dynam
o????????
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6-????
?????????????????
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?????????????
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(No Transcript)
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??????? 2200??
????-2002, Nature
2200?????????,????????????,????????????????????
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7-????
??????(????????)??
??????????? ???????????
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???????????(magnetite-based magnetoreceptor)
---????????????
??? ??????
TEM
????
EDAX
????
10µm
????????? ?????
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(No Transcript)
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(No Transcript)
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???121
BIM
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Magnetotactic coccus
????
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----?????
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???????????????? ???????
????
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??!
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