Sandrock Formation

{{Short description|Geological formation in England}}

{{Use dmy dates|date=April 2022}}

{{Infobox rockunit

| name = Sandrock Formation

| period = Aptian

| age = {{fossilrange|Aptian|Albian}}

| image =

| imagesize =

| caption =

| type = Geological formation

| prilithology = Sandstone, siltstone, mudstone

| otherlithology =

| unitof = Lower Greensand Group

| subunits =

| underlies = Monk's Bay Sandstone Formation

| overlies = Ferruginous Sands

| thickness = up to {{Convert|70|m|ft|-1}}

| area =

| map =IOW_geology.svg

| map_caption =Exposure of the Sandrock Formation on the southern half of the Isle of Wight

| location =

| coordinates =

| region = Europe

| country = United Kingdom

| extent = Isle of Wight, Dorset

}}

The Sandrock Formation is a geological formation in England, part of the Lower Greensand Group, it is found on the Isle of Wight and in the northern part of Swanage Bay. It consists of a cyclic rhythm of sandstones, siltstones, and mudstones.{{cite web | url=https://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=SIOW | title=Sandrock Formation | publisher=British Geological Survey | work=The BGS Lexicon of Named Rock Units | accessdate=21 July 2018}}