Eller Beck Formation

{{Use dmy dates|date=August 2019}}

{{Infobox rockunit

| name = Eller Beck Formation

| image =

| caption =

| type = Formation

| age = {{fossilrange|Aalenian|Bajocian|Aalenian-Bajocian}}

| period = Aalenian

| prilithology = Sandstone, Mudstone

| otherlithology = Ironstone, Limestone

| namedfor = Eller Beck

| namedby =

| region = Europe

| country = United Kingdom

| coordinates =

| unitof = Ravenscar Group

| subunits = Lower Member, Upper Member, Blowgill Member

| underlies = Cloughton Formation

| overlies = Saltwick Formation

| thickness = Typically 4.5 to 6 m, maximum of 8.2m

| extent = Yorkshire

| area =

| map =

| map_caption =

| location_ts = Walk Mill Foss

}}

File:Cross-section of rocks at Whitby Bay.svg

The Eller Beck Formation is a geologic formation in England. It preserves fossils dating back to the Jurassic period. It consists of a lower unit less than 3 m thick consisting of mudstone with subordinate ironstone, with an upper unit typically 4–6 m thick consisting of fine-medium grained sandstone, further south it changes into finer grained facies with mudstone and limestone.