“…On Earth, bedrock weathering rates are often defined and quantified as a backweathering rate (i.e., rockwall retreat rate) [e.g., Rapp , ; Söderman , ; Hinchliffe and Ballantyne , ; Sass , ; Krautblatter and Dikau , ; Moore et al , ; Siewert et al , ]. These rates are generally quantified by direct or indirect measurements of sediment loss from rock faces or alcoves and the associated sediment input to depositional slopes or aprons [e.g., Rapp , ; Hinchliffe and Ballantyne , ; Krautblatter and Dikau , ].…”