Table of Contents
Geosciences, Volume 9, Issue 4 (April 2019)
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Cover Story (view full-size image) This paper uses dimensional data from over 700 tafoni in Antarctica to assess how tafoni size and [...] Read more. This paper uses dimensional data from over 700 tafoni in Antarctica to assess how tafoni size and shape change as tafoni length increases. Smaller tafoni have rounder planform, whilst as tafoni length increases the width/length ratio (W/L) rapidly converges to a ratio of 0.67. The initial rounded form can be explained through a recent mathematical model of pit formation that focuses on evolving the relationships between rock strength and the varying concentration of a corrosive agent. Above a certain tafoni length, tafoni development is dominated by brittle fracture that produce fragments of width:length ratios of 0.67. View this paper