Data related to: Open-system evolution of a crustal-scale magma column, Klamath Mountains, California

Granitic magmas commonly display evidence for some level of interaction with and/or origins from crustal rocks. There is fundamental debate in the community as to the processes that control the origins of these magmas and the potential for their contamination as they pass through the crust. One approach to addressing these issues involves a combination of detailed field mapping combined with geochemical analysis of bulk-rock samples and their constituent minerals. In particular, resolution of debates about magma origin(s) and contamination processes rely on U-Pb ages of zircon combined with isotopic data gathered from bulk-rock samples and from minerals such as zircon.

The data presented here consist of U-Pb, Hf, and oxygen isotope analyses of zircon crystals separated from a major plutonic complex in northern California: the Wooley Creek batholith and Slinkard pluton. In addition, data are presented for samples of the metamorphic rocks that host these intrusions and for xenoliths of...