Sir: We are pleased to respond to J. Nawrocki’s comment. It gives us an additional opportunity to articulate our ideas on the significance of the K-Ar ages of illites with respect to Kupferschiefer ore genesis (Bechtel et al., 1999). Nawrocki perhaps has overstated our intent by writing that we used paleomagnetic data to verify our indirect method for measuring the age of the Kupferschiefer mineralization event. The ages in question were estimated ages of diagenetic illite in both the abstract and in the main body of the paper. In the closing sentence of the abstract, we wrote that...

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