Referring to the physical character of a rock or sediment. Related Articles: Glossary: BedGlossary: HorizonGeological field trip through Scotland: Basalts from the Isle of SkyePalaeozoic fossils from Central Europe: A geological expedition in the Southern Alps of AustriaThree dimensional photography of fossils (Part 3): Ammonites from the Northern Limestone Alps of Austria« Back to Glossary Index