Lealt Shale

{{Short description|Geologic formation in Skye, Scotland}}

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

{{Infobox rockunit

| name = Lealt Shale Formation

| image =Lealt Shale Lava.jpg

| caption = Thinly bedded limestones of the Lealt Shale formation overlain by Paleogene lava

| type = Geological formation

| age = {{fossilrange|Bathonian}}

| period = Bathonian

| prilithology = Mudstone

| otherlithology = Limestone

| namedfor = Lealt, Skye

| region = Europe

| country = {{flag|Scotland}}

| coordinates =

| unitof = Great Estuarine Group

| subunits = Kildonnan Member, Lonfearn Member

| underlies = Valtos Sandstone Formation

| overlies = Elgol Sandstone Formation

| thickness = Between 45 and 50 m

| extent = Inner Hebrides

| area =

| map =

| map_caption =

| namedby = Harris and Hudson

| year_ts = 1980

| location_ts = Cliffs east of Lonfearn (partial), Coastal exposure 2.5 km north of Kildonnan, Eigg (partial)

| thickness_ts = Lonfearn: 26 to 30 m (partial) Kildonnan: 23 m (partial)

}}

The Lealt Shale Formation is a Middle Jurassic geologic formation in Scotland. Fossil ornithopod, theropod and stegosaur tracks, a theropod dinosaur tooth and the pterosaur Dearc have been reported from the formation.Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.{{Cite journal|last1=Young|first1=Chloe M. E.|last2=Hendrickx|first2=Christophe|last3=Challands|first3=Thomas J.|last4=Foffa|first4=Davide|last5=Ross|first5=Dugald A.|last6=Butler|first6=Ian B.|last7=Brusatte|first7=Stephen L.|date=May 2019|title=New theropod dinosaur teeth from the Middle Jurassic of the Isle of Skye, Scotland|url=http://sjg.lyellcollection.org/lookup/doi/10.1144/sjg2018-020|journal=Scottish Journal of Geology|volume=55|issue=1|pages=7–19|doi=10.1144/sjg2018-020|issn=0036-9276|hdl=20.500.11820/063549bc-2a00-4ddc-bcf6-a1bc2f872c26|s2cid=134102042|hdl-access=free}}{{Cite journal|last1=dePolo|first1=Paige E.|last2=Brusatte|first2=Stephen L.|last3=Challands|first3=Thomas J.|last4=Foffa|first4=Davide|last5=Wilkinson|first5=Mark|last6=Clark|first6=Neil D. L.|last7=Hoad|first7=Jon|last8=Pereira|first8=Paulo Victor Luiz Gomes da Costa|last9=Ross|first9=Dugald A.|last10=Wade|first10=Thomas J.|date=2020-03-11|editor-last=Fiorillo|editor-first=Anthony R.|title=Novel track morphotypes from new tracksites indicate increased Middle Jurassic dinosaur diversity on the Isle of Skye, Scotland|journal=PLOS ONE|language=en|volume=15|issue=3|pages=e0229640|doi=10.1371/journal.pone.0229640|issn=1932-6203|doi-access=free|pmc=7065758}} The lithology consists of silty fissile mudstones with subordinate thin limestones.{{Cite web|title=Lealt Shale Formation|url=https://webapps.bgs.ac.uk/lexicon/lexicon.cfm?pub=LASH|access-date=2022-02-22|website=BGS Lexicon of Named Rock Units}}