Modulation of deformation by magmatic tempo, Coast Mountains Batholith, British Columbia, Canada

The data is used to constrain the tectonmagmatic evolution of the southern Coast Mountains batholith from ca. 120 – 50 Ma. Three periods of deformation coincide spatially and temporally with three periods of high-flux magmatism derived from mantle sources. These results suggest that the deformation was modulated by episodic magmatism and so was not a driver of episodic magmatism. During a period of high-flux magmatism, deformation style within the active arc reflects coeval relative plate motions; the timing of shifts in plate motions outside of these periods may not be recorded by the deformation., Data were collected and analyzed through integrated field and laboratory work by the principal investigators and their students as more fully described in Rusmore et al., 2024. DOI:10.1029/2024TC008318 (open access). Field work was conducted in the southern Coast Mountains of British Columbia on a NE-trending transect along Bute and Knight Inlets and in the region around Mount Waddington in 2014, 2015, and 2016.  Analysis of structural, petrographic, and field data was conducted at Occidental College. The U-Pb geochronology was performed at the University of Arizona LaserChron Center (ALC); Ar geochronology was conducted at Stanford University. Microprobe analysis used in hornblende geothermobarometry was conducted at the California Institute of Technology, Earth and Planetary Sciences division.  , , # Supporting Information for Modulation of Deformation by Magmatic Tempo, Coast Mountains Batholith, British Columbia, Canada. Tectonics in press 2024 DOI: 10.1029/2024TC008318 [https://doi.org/10.5061/dryad.jsxksn0kt](https://doi.org/10.5061/dryad.jsxksn0kt) ## Description of the data and file structure **Description of the data and file structure** Data used in Rusmore et al., (2024) Modulation of Deformation by Magmatic Tempo, Coast Mountains Batholith, British Columbia, Canada, DOI: 10.1029/2024TC008318 are presented here in five files: 1.      Supplemental Information figures in “ SI_Figures_Rusmore_et_al._2024.pdf” (on Zenodo) Figure 1 shows weighted mean and concordia plots for all U-Pb zircon samples; Figure 2 has Ar spectra for nine biotite and seven hornblende ages obtained from nine intrusive rock samples. Figure 3 has annotated BSE images showing spots analyzed in five intrusive rock samples for hornblende geothermobaromterty.  2.      U-Pb analyses in “Supplemental...本数据集用于约束约120–50 Ma期间海岸山脉岩基南部的构造-岩浆演化历程。三期变形事件在空间与时间上均与源自地幔源区的三期高通量岩浆作用相吻合。上述结果表明，变形作用受幕式岩浆作用调控，而非幕式岩浆作用的驱动因素。在高通量岩浆作用时期，活动弧内的变形样式反映了同期的板块相对运动；而在该时期之外，板块运动转变的时间可能无法通过变形记录下来。 本数据集由项目负责人及其学生通过集成野外与实验室工作收集并分析，详细说明参见Rusmore等人2024年的研究，DOI:10.1029/2024TC008318（开放获取）。2014、2015及2016年，研究团队在不列颠哥伦比亚省海岸山脉南部，沿布特湾（Bute Inlet）和奈特湾（Knight Inlet）的北东向剖面，以及瓦丁顿山周边区域开展了野外工作。结构地质学、岩石学与野外数据的分析工作在西方学院（Occidental College）完成。U-Pb地质年代学测试由亚利桑那大学激光年代学中心（University of Arizona LaserChron Center，ALC）开展；Ar同位素地质年代学测试在斯坦福大学完成。用于角闪石温压计分析的电子探针测试由加州理工学院（California Institute of Technology）地球与行星科学系完成。 # 配套支持信息：加拿大不列颠哥伦比亚省海岸山脉岩基的岩浆节奏对变形的调控作用，《构造学》（*Tectonics*）2024年已接收，DOI: 10.1029/2024TC008318 [https://doi.org/10.5061/dryad.jsxksn0kt](https://doi.org/10.5061/dryad.jsxksn0kt) ## 数据与文件结构说明 **数据与文件结构说明** 本数据集包含Rusmore等人（2024）《加拿大不列颠哥伦比亚省海岸山脉岩基的岩浆节奏对变形的调控作用》（DOI: 10.1029/2024TC008318）研究所用的全部数据，共分为5个文件： 1. 补充信息图件："SI_Figures_Rusmore_et_al._2024.pdf"（存于Zenodo平台）。其中图1展示了所有U-Pb锆石样品的加权平均年龄与协和年龄图；图2包含9件侵入岩样品的黑云母及7件侵入岩样品的角闪石的Ar同位素谱图；图3为标注后的背散射电子（Back Scattered Electron，BSE）图像，展示了5件侵入岩样品中用于角闪石温压计分析的测点位置。 2. U-Pb分析数据：详见"Supplemental..."