Durlston Formation

{{Short description|Geologic formation in England}}

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

{{Infobox rockunit

| name = Durlston Formation

| image =

| caption =

| type = Formation

| age = Berriasian {{Fossil range|145|139}}

| period = Berriasian

| prilithology = limestone and mudstone

| otherlithology =

| namedfor = Durlston Bay

| namedby =

| region = England

| country = United Kingdom

| coordinates =

| unitof = Purbeck Group

| subunits = Stair Hole Member, Peveril Point Member

| underlies = Wessex Formation, Ashdown Formation

| overlies = Lulworth Formation

| thickness = 18 to 57 m

| extent =

| area =

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}}

The Durlston Formation is a geologic formation in England. Particularly in the Isle of Purbeck. It preserves fossils dating back to the Berriasian stage of the Lower Cretaceous.{{Cite web |url=https://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=DURN |title=Durlston Formation |last=British Geological Survey |website=BGS Lexicon of Named Rock Units}}