Simple Lithology


alt label
Silt bearing mudstone more like this
definition Mudstone that contains detectable silt. (see comments) more like this
example siltstone more like this
note Use of 'dectable silt' in the criteria for this category is based on the observation that in practice, distinction of claystone from 'siltstone' is typically based on a qualitative assessment of 'grittiness' (e.g. rubbing with fingers, or chewing); the property that these tests can determine is the presence or absence of silty particles in the material. Quantitative grain size analysis in the the clay/silt fraction of a lithified sediment is difficult at best, and of questionable significance because diagensis has altered the size and mineralogy of original sedimentary particles. more like this
source This vocabulary more like this
broader clastic mudstone
narrower siltstone
in scheme simplelithology
is primary topic of siltstone