Geochemical Database for Intrusive Rocks of North-Central and Northeast Nevada

North-central and northeast Nevada contains numerous large plutons and smaller
stocks but also contains many small, shallowly emplaced intrusive bodies,
including dikes, sills, and intrusive lava dome complexes. Decades of geologic
investigations in the study area demonstrate that many ore deposits,
representing diverse ore deposit types, are spatially, and probably temporally
and genetically, associated with these igneous intrusions. However, despite the
number and importance of igneous intrusions in the study area, no synthesis of
geochemical data available for these rocks has been completed. This report
presents a synthesis of geochemical data for these rocks. The product
represents the first phases of an effort to evaluate the
time-space-compositional evolution of Mesozoic and Cenozoic magmatism in the
study area and identify genetic associations between magmatism and mineralizing
processes in this region.

[Summary provided by the USGS.]

内华达州中北部与东北部区域分布有大量大型深成岩体（plutons）与小型岩株（stocks），同时还存在诸多规模较小的浅成侵位侵入体，包括岩脉（dikes）、岩床（sills）以及侵入式熔岩穹隆复合体。数十年来对该研究区开展的地质调查显示，区内涵盖多种类型的众多矿床，在空间上（大概率也在时间与成因上）与这些火成侵入体存在关联。然而，尽管研究区内火成侵入体数量众多且科研与应用价值重大，但目前尚未有针对这些岩石的地球化学数据开展系统综合汇编的工作。本报告针对这些岩石的地球化学数据完成了系统综合汇编，该项成果是评估研究区中生代与新生代岩浆作用时空-成分演化历程，并厘清该区域岩浆作用与成矿过程之间成因关联的研究工作的第一阶段。[美国地质调查局（USGS）提供的摘要]