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Efrén Pérez Segura - Centro de Geociencias ::.. UNAM

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70.1<br />

91.0<br />

31 o<br />

29<br />

27<br />

o<br />

o<br />

71.2<br />

84-85<br />

81-90<br />

BC<br />

BCS<br />

0 100<br />

114<br />

74.3<br />

50 km<br />

USA<br />

S<br />

o o o<br />

112<br />

110<br />

71.6<br />

E<br />

x<br />

+<br />

85.1<br />

Si<br />

Ch<br />

81-83<br />

78.3<br />

H ** B<br />

88.7 95.2<br />

90.6<br />

76.9<br />

69.7<br />

72.5 72.6<br />

90.1 70.2<br />

89.0<br />

Figura 36. Distribución <strong>de</strong> los afloramientos <strong>de</strong>l Batolito Sonorense, y <strong>de</strong> las eda<strong>de</strong>s más<br />

antiguas a 70 Ma para rocas laramídicas en Sonora. * Eda<strong>de</strong>s U-Pb reportadas en este<br />

trabajo. USA, Estados Unidos <strong>de</strong> Norteamérica; Ch, Chihuahua; Si, Sinaloa; BC, Baja<br />

California; BCS, Baja California Sur; B, Bacanora; E, La Esperanza.<br />

60

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