Tafoni (holes eroded into rock due to differential degrees of weathering) weaken the Bandelier Tuff units exposed along canyon walls of tributaries to the Rio Grande, New Mexico.
(holes; eroded; due to differential degrees of weathering) (Tafoni (holes eroded into rock due to differential degrees of weathering; weaken; the Bandelier Tuff units) (the Bandelier Tuff units; exposed; L:along canyon walls of tributaries; to the Rio Grande)
holes Tafoni (holes eroded into rock due to differential degrees of weathering the Bandelier Tuff units
eroded weaken exposed
due to differential degrees of weathering
the Bandelier Tuff units
L:along canyon walls of tributaries to the Rio Grande