<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">Queenston limestone</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31481663</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 21:09:41</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">limestone, Queenston</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ A light brown or buff-colored dolostone that is well-cemented, free of jointing, and ideally suited for building purposes. It is often used as a building stone in Toronto, Canada as it is quarried in southern Ontario; Queenston limestone caps the Niagara Escarpment. Before a quarry operation was begun at Queenston in about 1840, Scottish settlers exploited the limestone beds for building materials; the present quarry is one of the oldest in Canada. ]]></dc:description></metadata>