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Lake, Ethan T.; Farmer, G. Lang (May 2015). "Oligo-Miocene mafic intrusions of the San Juan
Volcanic Field, southwestern Colorado, and their relationship to voluminous, caldera-forming magmas".
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Bachmann, O. (August 2002). "The Fish Canyon Magma Body, San Juan
Volcanic Field, Colorado: Rejuvenation and Eruption of an Upper-Crustal Batholith".
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336:"Revised astronomically calibrated 40Ar/39Ar ages for the Fish Canyon Tuff sanidine – Closing the interlaboratory gap"
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Geologic map of the central San Juan caldera cluster, southwestern
Colorado (Report). 2006.
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show that it all belongs to one eruption due to its uniform bulk-chemical composition (SiO
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crystals from the Fish Canyon Tuff (FCTs) are used as a reference mineral in
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are the primary phenocrysts). This tuff and eruption is part of the larger
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List of large volume volcanic eruptions in the Basin and Range
Province
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The Fish Canyon Tuff eruption occurred around 28 Million years ago.
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on Earth, estimated at 1,200 cu mi (5,000 km). (see
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Phillips, D.; Matchan, E.L.; Dalton, H.; Kuiper, K.F. (May 2022).
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Oligocene
Southern Rocky Mountain ignimbrite flare-up
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301:Geochimica et Cosmochimica Acta
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52:About 28 million years ago
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19:Fish Canyon Tuff eruption
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208:San Juan volcanic field
95:37.75639°N 106.93417°W
444:Volcanism of Colorado
30:The Fish Canyon Tuff
255:Journal of Petrology
100:37.75639; -106.93417
459:Oligocene volcanism
352:2022ChGeo.59720815P
313:2015GeCoA.157...86L
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346:: 120815.
307:: 86–108.
241:References
188:hornblende
168:phenocryst
132:ignimbrite
83:37°45′23″N
32:ignimbrite
386:Colorado
229:See also
219:Sanidine
210:and the
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176:sanidine
164:rhyolite
148:Colorado
130:flow or
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69:Location
348:Bibcode
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196:apatite
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39:Volcano
204:oxides
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192:sphene
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384:This
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