Data for: Temporal, Spatial and Geochemical Evolution of Late Cenozoic Post-Subduction Magmatism in Central and Eastern Anatolia, Turkey

This study primarily relies on the compilation, integration and interpretation of published age and geochemical data from late Cenozoic igneous rocks in central and eastern Anatolia, Turkey. Most dates were obtained by K-Ar and 40Ar/39Ar dating techniques on igneous biotite, hornblende, feldspar, groundmass, and whole-rock material from volcanic rock samples. Those dates can be interpreted as crystallization ages, but are susceptible to alteration and partial to whole resetting, which may conspire to yield dates that may be too young. The previously-published lithogeochemical and Sr-Nd-Pb isotopic analyses from 28 late Cenozoic igneous units were carefully filtered to generate a working database. All of the analyses from altered or weathered samples, yielding a total volatile content (LOI) greater than 5 wt % and acquired from enclaves, cumulates or xenoliths were eliminated. Outlying compositions were discarded in order to increase the internal coherence of the database. Despite this screening procedure, the resultant database suffers from a lack of homogeneity, data control and analytical differences as analyses were obtained through different analytical packages including variable set of elements, instrument (XRF, ICP-MS, INAA, etc.) and dissolution methods (total fusion, aqua regia, etc.) from various laboratories (Bureau Veritas, ActLabs, ALS, universities, etc.). The report of Fe oxidation state in the literature suffers from some approximation despite a careful data compilation (e.g., Fe2O3, FeO, FeOt and Fe2O3t). Approximations also lie in sample age and location as this information is not always provided in the literature. Published Sr-Nd-Pb radiogenic isotope data were compiled from literature. We corrected the 87Sr/86Sr, 143Nd/144Nd, 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb ratios to age to get initial isotopic ratios for those situations where the element concentration of Sr, Rb, Nd, Sm, Th, U and Pb was available. Most of the published Pb analyses were bracketed by the SRM981 standard. As reference values vary among publications, all the published Pb data were normalized to Galer and Abouchami (1998).

本研究主要依托土耳其安纳托利亚中东部地区晚新生代火成岩（late Cenozoic igneous rocks）已发表的年代学与地球化学数据开展汇编、整合与解译工作。多数测年数据通过K-Ar法（K-Ar dating）与40Ar/39Ar法（40Ar/39Ar dating）测年技术获得，测试对象为火山岩样品中的黑云母（biotite）、角闪石（hornblende）、长石（feldspar）、基质（groundmass）以及全岩物质（whole-rock material）。此类测年结果可被解释为结晶年龄，但易受蚀变作用影响，发生部分至完全的同位素重置，进而可能得到偏年轻的测年数值。

研究团队对已发表的28个晚新生代火成岩单元的岩石地球化学与Sr-Nd-Pb同位素分析数据进行了严格筛选，以构建可用数据库。研究剔除了蚀变或风化样品、总挥发分含量（烧失量LOI, Loss on Ignition）大于5 wt%的样品，以及来自包体（enclaves）、堆晶岩（cumulates）或捕虏体（xenoliths）的分析数据；同时移除了异常值，以提升数据库的内部一致性。

尽管经过上述筛选流程，最终构建的数据库仍存在均一性不足、数据管控不完善以及分析方法差异较大等问题：不同实验室（必维国际检验集团Bureau Veritas、ActLabs、ALS、各高校等）采用了不同的分析检测方案，涵盖可变的元素检测范围、仪器设备（X射线荧光光谱法XRF、电感耦合等离子体质谱法ICP-MS、中子活化分析INAA等）以及溶样方法（全熔法total fusion、王水法aqua regia等），进而导致分析结果存在显著差异。

文献中关于铁氧化态的记录存在一定近似性，即便研究团队已仔细开展数据汇编（例如存在Fe₂O₃、FeO、FeOt和Fe₂O₃t等不同表述方式）。样品年龄与位置信息也存在近似偏差，因为这类信息在原始文献中并非总能完整提供。

已发表的Sr-Nd-Pb放射成因同位素数据均来自公开文献。当样品中Sr、Rb、Nd、Sm、Th、U和Pb的元素浓度数据可获取时，研究团队将87Sr/86Sr、143Nd/144Nd、206Pb/204Pb、207Pb/204Pb以及208Pb/204Pb比值校正至成岩年龄，以获得初始同位素比值。多数已发表的铅分析结果以标准参考物质981（SRM981）作为校准基准。由于不同文献采用的参考值存在差异，所有已发表的铅同位素数据均被归一化至Galer与Abouchami（1998）的标准值。