Zircon U-Pb geochronology and trace element dataset from the Southern Rocky Mountain Volcanic Field, Colorado, USA
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Date
2022-08
Publication Type
Journal Article
ETH Bibliography
yes
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Abstract
This contribution provides in-situ LA-ICP-MS U-Pb ages and trace element determinations of zircons from dacitic to rhyolitic lavas, ignimbrites and intrusions in the Southern Rocky Mountain Volcanic Field (SRMVF) in Colorado, USA. The data record a period of intense magmatic activity in the Oligocene-early Miocene (∼37–22 Ma) which gave rise to some of the largest explosive ignimbrites in the geological record (e.g. the Fish Canyon Tuff). Age data are drift corrected, but not corrected for radiation dosage or Th disequilibrium, in order to allow users to apply their own algorithms. Xenocrysts (much older crystals up to 2 Ga from the Proterozoic basement) are included in this record.
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Publication status
published
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Book title
Journal / series
Volume
43
Pages / Article No.
108362
Publisher
Elsevier
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Edition / version
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Software
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Date collected
Date created
Subject
LA-ICP-MS; Zircon; Magmatism; San juan volcanic field; Geochemistry
Organisational unit
03958 - Bachmann, Olivier / Bachmann, Olivier
Notes
Funding
ETH-34 15-2 - Improving U/Th/Pb dating techniques and application to residence times of magma bodies in the Earth’s crust (ETHZ)