PePPEr is an online database and data platform that allows users to search, plot and download the physical properties of volcanic rocks.

This web page is in the stages of final development, so may not yet be fully compatible with smaller devices (smartphones and tablets).

Citation for use of PePPEr will be available in the new year (2025).

Basic functions of PePPEr:

• Plotter for existing porosity, permeability and pycnometry data (and more)
• Download the full database or select databases
• Upload new data from your own published study using the provided template
• Calculate polydispersivity for particle size distributions
• More functions for particle size distributions and calculating percolation thresholds will be available in the future...

Example images of plots of volcanic rock data from the PePPEr database