{{Short description|Limestone quarry in England}} {{Use dmy dates|date=April 2022}} thumb|right|The main wall of the quarry in 2008 '''Trowbarrow Quarry''' is a disused limestone quarry near Silverdale, Lancashire, England, which is a geological Site of Special Scientific Interest<ref>{{cite web|url=http://www.sssi.naturalengland.org.uk/citation/citation_photo/1000855.pdf |title=Trowbarrow Quarry citation|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate=26 July 2013}}</ref><ref>{{cite web|url=http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000855%27 |title=Map of Trowbarrow Quarry|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate=26 July 2013}}</ref> and a Local Nature Reserve.<ref>{{cite web|url=http://www.lnr.naturalengland.org.uk/special/lnr/lnr_details.asp?C=0&N=Trowbarrow_Quarry&ID=1209 |title= Trowbarrow Quarry|series=Local Nature Reserves|publisher=Natural England|accessdate=26 July 2013}}</ref><ref>{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=lnrIndex&query=REF_CODE%3D%271009332%27|title=Map of Trowbarrow Quarry|series=Local Nature Reserves|publisher=Natural England|accessdate=26 July 2013}}</ref> It is a popular rock climbing area.<ref>{{cite web|url=http://www.lakesbloc.com/crags/south-lakes-limestone/232-trowbarrow-quarry.html|title=Trowbarrow Quarry|publisher=Lakesbloc: Lake District Bouldering|accessdate=18 February 2013}}</ref>
== Geology == This site is important for its microfossils from the Lower Carboniferous Urswick Limestone from the Visean Stage (Asbian substage [https://vocab.bgs.ac.uk/v/vocab/gchrnlgy:Division/Division:CR]). Fossils include corals from ''Syringopora'' and gastropods from Straparollinidae''.'' Microfossils of algae and foraminifera are also present.<ref>{{Cite web |title=Trowbarrow Quarry, Lancashire {{!}} GeoGuide |url=https://geoguide.scottishgeologytrust.org/p/gcr29/gcr29_trowbarrowquarry |access-date=2025-12-31 |website=geoguide.scottishgeologytrust.org}}</ref>
==History== The quarry produced limestone for use in construction, industry and agriculture, starting when the Furness Line railway opened nearby in 1857, providing a means of moving the output. A new method to produce Tarmacadam was developed, using hot tar from the gasworks at nearby Carnforth to mix with crushed limestone. The quarry closed in 1959, having employed 20 to 30 men for most of its active life.<ref>{{cite book | url=http://www.lancashirewildlife.org.uk/leaflets/trowbarrowleaflet.pdf | title=Trowbarrow: the history, geology, wild life and rock climbs of Trowbarrow | author=Arnside and Silverdale AONB Countryside Management Service | date = n.d. |chapter= History| pages=3–5 | accessdate=18 February 2013 }}</ref>
The site is now managed as part of the Arnside and Silverdale Area of Outstanding Natural Beauty.
== Land ownership == All land within Trowbarrow Quarry SSSI is owned by the local authority.<ref>{{Cite web |title=Sites of Special Scientific Interest | date=24 November 2014 |url=https://questions-statements.parliament.uk/written-questions/detail/2014-11-17/214414/ |access-date=2025-12-31 |website=Written questions and answers | publisher=UK Parliament|language=en}} ''See the attached "List of SSSIs"''</ref>
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==References== {{reflist}}
==External links== * {{cite web | url=http://www.lancashirewildlife.org.uk/leaflets/trowbarrowleaflet.pdf | title=Trowbarrow: the history, geology, wild life and rock climbs of Trowbarrow | author=Arnside and Silverdale AONB Countryside Management Service | date = n.d. | pages=22}} *{{cite web|url=http://www.sssi.naturalengland.org.uk/Special/sssi/sssi_details.cfm?sssi_id=1000855|title=Trowbarrow Quarry: SSSI information|publisher=Natural England|accessdate=18 February 2013}} *[http://www.mapofthelakedistrict.co.uk/#/trowbarrow-quarry/4579232714 Map of Trowbarrow Quarry Nature Reserve]
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{{City of Lancaster}}
Category:Sites of Special Scientific Interest in Lancashire Category:Local nature reserves in Lancashire Category:Geography of the City of Lancaster
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