<div>This data set accompanies the following manuscript:</div><div><i><br></i></div><div>Kanakiya, S., Adam, L., Rowe, M. C., Lindsay, J. M., & Esteban, L. (2021). The role of tuffs in sealing volcanic conduits. Manuscript accepted for publication in <i>Geophysical Research Letters</i>.</div><div><i><br></i></div><div><i><b>File descriptions:</b></i></div><div><i><br></i></div><div><i>Sample_Location_Type_Dimensions.txt </i>contains sampling locations and core dimensions of samples used in this study.</div><div><br></div><div><i>Raw_XRD_Data.txt</i> contains raw X-ray diffraction data of samples used in this study.</div><div><br></div><div><i>Phase_Composition_and_Hydrothermal_Alteration_Intensity.txt</i> contains semi-quantitative phase composition of samples used in this study.</div><div><br></div><div><i>Backscatter_Electron_Images.pdf</i> contains backscattered-electron images of samples used in this study. </div><div><br></div><div><i>Porosity_and_Permeability.txt</i> contains measurements of porosity, grain density, and permeability of samples used in this study.</div><div><br></div><div><i>Elastic_Properties.txt</i> contains measurements of P-wave velocity, S-wave velocity, and dynamic young's modulus of samples used in this study.</div>