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  "Title": "Stratigraphic Plug Alignment for Integrating Plug-Based and XRF\nData",
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  "Description": "Implements the Stratigraphic Plug Alignment (SPA)\nprocedure for integrating sparsely sampled plug-based\nmeasurements (e.g., total organic carbon, porosity, mineralogy)\nwith high-resolution X-ray fluorescence (XRF) geochemical data.\nSPA uses linear interpolation via the base approx() function\nwith constrained extrapolation (rule = 1) to preserve\nstratigraphic order and avoid estimation beyond observed\ndepths. The method aligns all datasets to a common depth grid,\nenabling high-resolution multivariate analysis and\nstratigraphic interpretation of core-based datasets such as\nthose from the Utica and Point Pleasant formations. See R Core\nTeam (2025)\n<https://stat.ethz.ch/R-manual/R-devel/library/stats/html/stats-package.html>\nand Omodolor (2025)\n<http://rave.ohiolink.edu/etdc/view?acc_num=case175262671767524>\nfor methodological background and geological context.",
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