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 these host rocks engulfed by the intrusions. These data are discussed in the above-mentioned manuscript. Generation of the data was supported by National Science Foundation grants EAR-0838342 to C. Barnes and A. Yoshinobu, EAR-0838546 to K. Chamberlain, and EAR-1524336 to J. Valley. The WiscSIMS isotope facility (oxygen isotope data) was supported by NSF grant EAR-1658823 and the University of Wisconsin-Madison. Figure 1 illustrates the locations of plutonic samples analyzed. Table 1 presents sample locations and rock types. Tables 2–5 present U-Pb ages and Hf isotope data determined by laser-ablation inductively coupled plasma mass spectrometry at the University of California-Santa Barbara. Tables 6A–6E present U-Pb ages determined by SHRIMP-RG (sensitive high resolution ion microprobe-reverse geometry) at Stanford University. Table 7 presents oxygen isotope (zircon) data determined by SIMS (secondary ion mass spectrometry at the University of Wisconsin-Madison.花岗岩质岩浆通常可观测到与地壳岩石发生一定程度相互作用，或其成因源自地壳岩石的相关证据。地质学界围绕控制此类岩浆成因的过程，以及岩浆穿过地壳时发生混染的可能性，存在根本性争议。解决这些问题的一种研究路径，是将详细的野外填图与全岩样品及其组成矿物的地球化学分析相结合。具体而言，关于岩浆成因与混染过程的争议得以解决，有赖于锆石（zircon）的U-Pb年龄数据，结合从全岩样品及锆石等矿物中获取的同位素数据。本次发布的数据涵盖了从美国加利福尼亚州北部一处大型深成岩杂岩体——伍利溪岩基（Wooley Creek batholith）与斯林卡德深成岩体（Slinkard pluton）中分离出的锆石晶体的U-Pb、Hf及氧同位素分析结果。此外，本数据集还包含赋存这些侵入岩体的变质岩样品数据，以及被侵入岩体包裹的上述寄主岩捕虏体的相关数据。上述数据的相关解读已在前述稿件中展开论述。本数据集的生成得到了美国国家科学基金会（NSF）项目资助：分别为授予C. Barnes与A. Yoshinobu的EAR-0838342项目、授予K. Chamberlain的EAR-0838546项目，以及授予J. Valley的EAR-1524336项目。负责氧同位素数据测试的WiscSIMS同位素实验室，得到了NSF项目EAR-1658823与威斯康星大学麦迪逊分校的资助。图1展示了本次分析的深成岩样品的采样点位，表1列出了样品的采样点位与岩石类型。表2至表5收录了由加州大学圣巴巴拉分校采用激光剥蚀电感耦合等离子体质谱法测定的U-Pb年龄与Hf同位素数据。表6A至6E收录了由斯坦福大学采用SHRIMP-RG（sensitive high resolution ion microprobe-reverse geometry，高灵敏度高分辨率反向几何离子探针）测定的U-Pb年龄数据。表7收录了由威斯康星大学麦迪逊分校采用SIMS（secondary ion mass spectrometry，二次离子质谱）测定的锆石氧同位素数据。