Saltwick Formation

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

{{Infobox rockunit

| name = Saltwick Formation

| image = Quarry, Eston Nab (geograph 4040410).jpg

| caption = Exposure of the Saltwick Formation at Eston Nab Quarry

| type = Geological formation

| age = {{fossilrange|Aalenian|Aalenian|Aalenian}}

| period = Aalenian

| prilithology = Mudstone, Siltstone, Sandstone

| otherlithology = Ironstone

| namedfor = Saltwick Bay

| namedby =

| region = Europe

| country = United Kingdom

| coordinates =

| unitof = Ravenscar Group

| subunits =

| underlies = Eller Beck Formation

| overlies = Dogger Formation

| thickness = up to 50 m, thinning to 5-10 m

| extent = Cleveland Basin, Yorkshire

| area =

| map =

| map_caption =

}}

The Saltwick Formation is a Middle Jurassic geologic formation in Yorkshire and the western North Sea. It is primarily Aalenian in age. Fossil footprints, assigned to the tetrapod ichnogenus Characichnos, as well as stegosaur tracks have been reported from the formation.{{Cite journal |last1=Whyte |first1=M. A. |last2=Romano |first2=M. |date=2001-09-01 |title=A Dinosaur Ichnocoenosis From the Middle Jurassic of Yorkshire, UK |url=https://www.tandfonline.com/doi/abs/10.1080/10420940109380189 |journal=Ichnos |volume=8 |issue=3–4 |pages=223–234 |doi=10.1080/10420940109380189 |bibcode=2001Ichno...8..223W |s2cid=128891012 |issn=1042-0940|url-access=subscription }}Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607. An indeterminate sauropod, nicknamed Alan, has also been reported from the formation.{{Cite journal|last1=Manning|first1=Phillip L.|last2=Egerton|first2=Victoria M.|last3=Romano|first3=Mike|date=2015-06-01|title=A New Sauropod Dinosaur from the Middle Jurassic of the United Kingdom|journal=PLOS ONE|language=en|volume=10|issue=6|pages=e0128107|doi=10.1371/journal.pone.0128107|issn=1932-6203|pmc=4452486|pmid=26030865|doi-access=free|bibcode=2015PLoSO..1028107M }}