| Term: | matrix |
| Definition: |
Constituent forms finer-grained material interstitial to a framework constituent. ‘The finer-grained material enclosing, or filling the interstices between, the larger grains or particles of a sediment or sedimentary rock....The term refers to the relative size and disposition of the particles, and no particular particle size is implied’ (Jackson, 1997, p. 393). May be classifiable into orthomatrix, protomatrix, epimatrix, pseudomatrix, and unclassified matrix. |