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Showing 1 to 1 of 1 for “"Geology--Colorado--San Juan Mountains; Petrology; Geology"”.
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Petrography of xenolith zones in the Black Face-Ames plutons, western San Juan Mountains, Colorado
… intrusive bodies located in the San Miguel Mountains of southwestern Colorado. The Ames pluton is generally a composite sill; the Black Face pluton is an asymmetric laccol1th. The two plutons are probably joined at depth, and together they form a crudely annular outcrop pattern, …