This DATSETNAMEreadme.txt file was generated on 20250918 by Sarah Penniston-Dorland Files in dataset: Dataset 1.xls a. Lithium isotopic composition and concentration of samples b. Lithium isotopic composition (and concentration) of standards Dataset 2.xls a. Amphibole major-element composition b. Amphibole Li concentrations Dataset 3.xls a. Partition coefficient calculated using calcic amphibole b. Partition coefficient calculated using calcic amphibole and excluding all chlorite and phengite c. Partition coefficient calculated using calcic amphibole in equilibrium with chlorite d. Partition coefficient calculated using glaucophane Method 1.pdf: Li partitioning calculation description MATLAB code 1.pdf: Finite difference advection-diffusion model code MATLAB code 2.pdf: Monte Carlo model code Related publication Hoover, W., Penniston-Dorland, S.,Teng, F.-Z., submitted 2025, Short-lived subduction interface fluid transport at the depths of episodic tremor and slip. AGU Advances. Principal Investigator Contact Information: Name: Sarah Penniston-Dorland Institution:University of Maryland Email:sarahpd@umd.edu 3. Date of data collection (single date, range, approximate date): 2012-2023 4. Geographic location of data collection (where was data collected?): Samples: Santa Catalina Island, CA Analytical data: College Park, MD; Seattle, WA 5. Information about funding sources that supported the collection of the data: NSF-EAR-091110, NSF-OISE-1545903, NSF-EAR-2122512