Dating crust-mantle separation: Re-Os isotopic study of mafic xenoliths from central Arizona

Authors :: Esperanca, Sonia
Carlson, Richard W.
Shirey, Steven B.
Smith, Douglas
Source :: Geology. July, 1997, Vol. 25 Issue 7, p651, 4 p.
Publication Year :: 1997
Abstract: Mafic deep crustal and shallow upper mantle xenoliths hosted in the Chino Valley and Camp Creek latites of central Arizona have 1870s/1880s (0.216 to 1.51) ratios dramatically higher than values typical of mantle peridotite (

Subjects :: Arizona -- Natural history
Geology, Stratigraphic -- Proterozoic
Rocks, Igneous -- Inclusions
Isotope geology -- Analysis
Earth sciences

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