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The Laramide Caborca orogenic gold belt of northwestern Sonora, Mexico; white mica <sup>40</sup>Ar/<sup>39</sup>Ar geochronology from gold-rich quartz veins

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Izaguirre, Aldo, Kunk, M.J., Iriondo, Alexander, McAleer, Ryan, Caballero-Martínez, J.A, and Espinosa Arámburu, Enrique, 2016, The Laramide Caborca orogenic gold belt of northwestern Sonora, Mexico; white mica <sup>40</sup>Ar/<sup>39</sup>Ar geochronology from gold-rich quartz veins: U.S. Geological Survey Open-File Report 2016–1008, 30 p., http://dx.doi.org/10.3133/ofr20161008.

Summary

This report contains reduced 40Ar/39Ar geochronological data from 63 hydrothermal white mica samples separated from orogenic gold-rich quartz veins in the Laramide Caborca orogenic gold belt (COGB) of northwestern Sonora, Mexico. The main objective of this report is to present the sample locations, 40Ar/39Ar experimental methodology, and 40Ar/39Ar isotopic data. We include age spectra and inverse-isotope correlation diagrams for all white mica samples. The age spectra are separated into three groups based on the type of age used for geologic interpretation, including plateau ages (group 1), isochron ages (group 2), and average or single-step heating ages (group 3). The resulting age spectra are used to help establish the age of mineralization [...]

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Harvested on Mon Feb 29 04:33:46 MST 2016 from MODS XML Service

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Type Scheme Key
local-index unknown ofr20161008
local-pk unknown 70162328
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.3133/ofr20161008
series unknown Open-File Report

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citationTypeReport
journalOpen-File Report
languageEnglish
parts
typePublication Place
valueReston, VA
tableOfContents<ul> <li>Introduction</li> <li>Methods</li> <li>Results of <sup>40</sup>Ar/<sup>39</sup>Ar Data</li> <li>Conclusions</li> <li>Acknowledgments</li> <li>References Cited</li> </ul>

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