The ZTR index quanti es the extent of this process by measuring the total concentration of zircon, tourÂ·maÂ·line, and ruÂ·tile.
This process is the subject of a six-stage classi cation system developed by Anna Behrensmeyer using data collected during  eldwork in the Amboseli Basin. Cernohouz and Solc created an empirical logarithmic pro le for the growth of this process's namesake "rind." This process is responsible for the existence of an electron spin resonance due to submicroscopic reduced iron particles in lunar regolith and meteorites. The ZTR index quanti es the extent of this process by measuring the total concentration of zircon, tourÂ·maÂ·line, and ruÂ·tile. This process may produce concentric layers of saprolite or "honeycomb" features like tafoni. It's not crystallization, but susceptibility to this process decreases when moving from orthoclase to quartz on the Goldich dissolution series. For 10 points, name this physical and chemical process that causes the in situ breakdown of rocks, as opposed to erosion.
This process is the subject of a six-stage classi cation system developed by Anna Behrensmeyer using data collected during  eldwork in the Amboseli Basin.
weathering [or bone weathering; or weathering rind; or space weathering; or meteorite weathering; or spheroidal weathering; or honeycomb weathering; or physical weathering; or chemical weathering]