Cockercombe tuff

{{Short description|Pyroclastic rock}}

{{Use dmy dates|date=March 2021}}

Cockercombe Tuff is a greenish-grey, hard pyroclastic rock, formed by the compression of volcanic ash containing high quantities of chlorite, which gives it its distinctive colour.{{cite web|last=Prudden|first=Hugh|title=Somerset building stone guide|url=http://www.sanhs.org/Proc%20Building%20stone.pdf|page=4|publisher=Somerset Archaeological and Natural History Society|accessdate=16 July 2011|url-status=dead|archiveurl=https://web.archive.org/web/20110111194113/http://www.sanhs.org/Proc%20Building%20stone.pdf|archivedate=11 January 2011}}{{cite book|last=Haslett|first=Simon K.|title=Somerset Landscapes: Geology and landforms|year=2010|publisher=Blackbarn Books|location=Usk|isbn=9781456416317|page=50}} It is found almost exclusively in the south-eastern end of the Quantock Hills{{cite book|last=Brenchley |first=P.J. |author2=Peter Franklin Rawson|title=The geology of England and Wales|year=2006|publisher=Geological Society|isbn=978-1-86239-200-7|pages=242|url=https://books.google.com/books?id=-6gqvAbdS-MC&pg=PA242}} near Cockercombe, Somerset, England, from where it has been quarried for centuries.

Quantock Lodge is built from Cockercombe tuff.{{cite web|title=Over Stowey Parish Design Statement|url=http://www.sedgemoor.gov.uk/CHttpHandler.ashx?id=3407&p=0|publisher=Sedgemoor District Council|accessdate=16 July 2011|archive-url=https://web.archive.org/web/20110927053546/http://www.sedgemoor.gov.uk/CHttpHandler.ashx?id=3407&p=0|archive-date=27 September 2011|url-status=dead}}{{cite web | url=http://www.bgs.ac.uk/downloads/start.cfm?id=1619 | title=Strategic Stone Study: A Building Stone Atlas of Somerset and Exmoor | publisher=English Heritage|accessdate=11 October 2011}}