Marehill Quarry

{{Infobox SSSI

|image= Marehill Quarry (2).jpg

|image_caption =

|name= Marehill Quarry

|aos= West Sussex

|interest=Geological

|gridref={{gbmappingsmall|TQ 064 186}}

|area= {{convert|1.1|ha|acre|abbr=off}}

|notifydate= 1987

|map=[https://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000642%27 Magic Map]

}}

Marehill Quarry is a {{convert| 1.1 |ha|acre|abbr=off |adj=on }} geological Site of Special Scientific Interest east of Pulborough in West Sussex.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1000642&SiteName=&countyCode=46&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Marehill Quarry | series= Sites of Special Scientific Interest|publisher=Natural England|accessdate = 26 May 2019}}{{cite web|url=https://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000642%27 |title=Map of Marehill Quarry|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 26 May 2019}} It is owned and managed by the Sussex Wildlife Trust{{cite web|url= https://sussexwildlifetrust.org.uk/visit/smaller-reserves |title= Smaller reserves |publisher= Sussex Wildlife Trust |accessdate= 26 May 2019}} and is a Geological Conservation Review site.{{cite web|url= http://jncc.defra.gov.uk/default.aspx?page=4174&gcr=871 |title= Marehill Quarry (Aptian-Albian) |series=Geological Conservation Review |publisher=Joint Nature Conservation Committee|accessdate= 6 April 2019}}

This disused quarry is the type locality for the Marehill Clay, a member of the Sandgate Beds, part of the Lower Greensand Group, which dates to the Lower Cretaceous between 145 and 100 million years ago.{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1000642.pdf |title=Marehill Quarry citation|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 26 May 2019}} It has caves which are used for hibernation by several species of bats, including Natterer's, whiskered and Daubenton's.

There is no public access to the site.