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DMANTLEMENT DE LA

PANGE (1)

a) Le monde il y a 200 millions dannes

b) Il y a 10 millions dannes (a!"#s 20 m$a$ de d"i%e) &) Il y a 1'0 millions dannes (a!"#s 0 m$a$de d"i%e)

onede*!ansionone des+bd+&,ion

Gla&ie"&on,inen,al

-aille,"ans.o"man,eMo+%emen, des&on,inen,s

Ch. 20: Tectonique desplaques

No+%elle &"o/,eo&ani+e

Gla&ie" &on,inen,al one de*!ansion

one des+bd+&,ion

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MOUVEMENTS DE MASSE DE MATERIEL NON CONSOLIDE

FLUX: Glissement lent ou cree ! "#$#% mm& 'n(

Si)nes: inclin'ison

*es troncs *+'r,res- cl.tures

ou ote'u/ t0l0)r'1i2ues

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ENI3NNEMENT GLA4IAIE(Alas5a)

-o"ma,ion e, ,"ans!o", de blo&s67"a%ie"6 sable e, bo+e

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DSERT DE SABLE ET GRANTE!S"#RCE: $%osion en & to%s '( Saha%a

)ENT * AGENT D+ER"S"N

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,,- o the su%ace o the Ea%th is co/e%ed 1 sedient o% sedienta%1%oc3s.

4uans inte%act 5ith the Ea%th la%6el1 at o% nea% its su%ace.

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