Alluvium vs. Breccia

Alluviumnoun

soil, clay, silt or gravel deposited by flowing water, as it slows, in a river bed, delta, estuary or flood plain

Alluviumnoun

Deposits of earth, sand, gravel, and other transported matter, made by rivers, floods, or other causes, upon land not permanently submerged beneath the waters of lakes or seas.

Alluviumnoun

clay or silt or gravel carried by rushing streams and deposited where the stream slows down

Alluvium

Alluvium (from the Latin alluvius, from alluere, ) is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan, or in similar settings. Alluvium is also sometimes called alluvial deposit.

Breccianoun

(petrology) A rock composed of angular fragments in a matrix that may be of a similar or a different material.

Breccianoun

A rock composed of angular fragments either of the same mineral or of different minerals, etc., united by a cement, and commonly presenting a variety of colors.

Breccianoun

a rudaceous rock consisting of sharp fragments embedded in clay or sand

Breccia

Breccia () is a sedimentary rock composed of broken fragments of minerals or rocks cemented together by a fine-grained matrix that can be similar to or different from the composition of the fragments. The word has its origins in the Italian language, in which it means .