siliciclastic

{{Short description|Type of rocks that are almost exclusively silica-bearing}}

File:Cross beds transitionnal shoreface morocco.jpg

Siliciclastic (or siliclastic{{cite book |last1=Allaby |first1=Michael |title=A dictionary of geology and earth sciences |date=2013 |publisher=Oxford University Press |location=Oxford |isbn=9780199653065 |edition=Fourth|chapter=siliclastic}}) rocks are clastic noncarbonate sedimentary rocks that are composed primarily of silicate minerals, such as quartz or clay minerals. Siliciclastic rock types include mudrock, sandstone, and conglomerate.{{cite book |editor1-last=Jackson |editor1-first=Julia A. |title=Glossary of geology. |date=1997 |publisher=American Geological Institute |location=Alexandria, Virginia |isbn=0922152349 |edition=Fourth |chapter=siliciclastic}}

Siliciclastic sediments are silica-based sediments, lacking carbon compounds, which are formed from pre-existing rocks, by breakage, transportation and redeposition to form sedimentary rock.[https://www.glossary.oilfield.slb.com/Terms/s/siliciclastic_sediment.aspx Oilfield Glossary: siliciclastic sediment.] Retrieved 23 August 2018.