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U-Pb detrital zircon data for: lower Paleozoic sedimentary rocks near Silverton, CO USA

Dates

Publication Date
Start Date
2016-08-01
End Date
2017-08-01

Citation

Holm-Denoma, C.S., Pianowski, L.S., and Evans, J.E., 2019, U-Pb detrital zircon data for: lower Paleozoic sedimentary rocks near Silverton, CO USA: U.S. Geological Survey data release, https://doi.org/10.5066/P9SYHGUV.

Summary

This Laser ablation ICPMS U-Pb detrital zircon data set supports mapping and stratigraphic interpretations of the Upper Devonian Ignacio Formation in southwestern Colorado (Silverton area). All samples were collected from a measured stratigraphic section called "Sultan Creek South" located at 37.710010 and -107.67530 (Evans and others, 2019). The Ignacio Formation was previously interpreted as Cambrian, but evidence that it is Devonian includes reexamined fossil data and detrital zircon U-Pb geochronology. The Ignacio Formation has a stratigraphic trend of detrital zircon ages shifting from a single ca. 1.7 Ga age peak to bimodal ca. 1.4 Ga and ca. 1.7 Ga age peaks, which represents local source-area unroofing history. Specifically, [...]

Contacts

Point of Contact :
Christopher S Holm-Denoma, U.S. Geological Survey Southwest Region: Geology, Geophysics, and Geochemistry Science Center
Originator :
Christopher S Holm-Denoma, Laura S Pianowski, James E Evans
Metadata Contact :
Christopher S Holm-Denoma, U.S. Geological Survey Southwest Region: Geology, Geophysics, and Geochemistry Science Center
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Geology, Geophysics, and Geochemistry Science Center
USGS Mission Area :
Energy and Minerals

Attached Files

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U-Pb detrital zircon data for lower Paleozoic sedimentary rocks near Silverton, CO USA.xml
Original FGDC Metadata
View 		25.62 KB application/fgdc+xml
U-Pb_detrital_zircon_data_for_lower_Paleozoic_sedimentary_rocks_near_Silverton_CO_USA.csv 85.32 KB text/csv

Purpose

This data set is novel and was used to test the maximum depositional age and provenance of the Ignacio Formation as described in southwest Colorado. The data set shows a progressive change in source rocks of zircon through a stratigraphic section of the Ignacio Formation.

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Communities

  • USGS Data Release Products
  • USGS Geology, Geophysics, and Geochemistry Science Center

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9SYHGUV

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