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all geography including DSDP/ODP Sites and Legs
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North America
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Rocky Mountains
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U. S. Rocky Mountains
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San Juan Mountains (2)
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United States
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Colorado
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Archuleta County Colorado (1)
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Rio Grande County Colorado (1)
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San Juan volcanic field (2)
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U. S. Rocky Mountains
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commodities
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metal ores
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lead ores (1)
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mineral deposits, genesis (2)
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elements, isotopes
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isotopes (1)
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geochronology methods
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geologic age
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igneous rocks
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igneous rocks
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minerals
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phosphates
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apatite (1)
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silicates
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framework silicates
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feldspar group
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alkali feldspar
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orthosilicates
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nesosilicates
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sheet silicates
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sulfides
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Primary terms
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absolute age (1)
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middle Tertiary (1)
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economic geology (2)
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geochemistry (1)
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geochronology (1)
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igneous rocks
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volcanic rocks (1)
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intrusions (1)
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isotopes (1)
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magmas (1)
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metal ores
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lead ores (1)
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metasomatism (1)
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mineral deposits, genesis (2)
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North America
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Rocky Mountains
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U. S. Rocky Mountains
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San Juan Mountains (2)
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Precambrian
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upper Precambrian
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Proterozoic (1)
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United States
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Colorado
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Archuleta County Colorado (1)
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Conejos County Colorado (1)
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Dolores County Colorado (1)
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Hinsdale County Colorado (1)
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Mineral County Colorado (1)
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Rio Grande County Colorado (1)
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San Juan County Colorado (2)
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San Juan volcanic field (2)
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U. S. Rocky Mountains
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San Juan Mountains (2)
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F. S. Fisher
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Journal Article
Genesis of ore deposits in the San Juan volcanic field, southwestern Colorado; lead isotope evidence
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 February 1979
Economic Geology (1979) 74 (1): 1–26.
Journal Article
Multiple ages of mid-Tertiary mineralization and alteration in the western San Juan Mountains, Colorado
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 1976
Economic Geology (1976) 71 (3): 571–588.