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Central Region Publications

40Ar/39Ar Dating Studies of Minerals and Rocks in various areas in Mexico: USGS/CRM Scientific Collaboration (Part II)

By Alexander Iriondo1,2,3, Michael J. Kunk1, Jeffrey A. Winick1, and CRM4

1U.S. Geological Survey, Denver, Colorado
2University of Colorado at Boulder, Boulder, Colorado
3Universidad Nacional Autónoma de México, Centro de Geociencias, Querétaro, México
4Consejo de Recursos Minerales, Pachuca, México

Open-File Report 2004–1444

geologic map of Mexico
Version 1.0
Published 2004
This publication contains reduced 40Ar/39Ar geochronology data of 39 rocks (47 analyses) collected by geologists from Consejo de Recursos Minerales (CRM) in various areas in Mexico. These analyses were done under Annex 2 of the Memorandum of Understanding between the U.S. Geological Survey (USGS) and the CRM. This is the second report produced under this Annex; the first report was published in 2003 (Iriondo and others, 2003). This report is primarily a detailed source document for subsequent scientific publications and maps that will integrate this data into a geological context.

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