Global Heritage Stone: Worldwide Examples of Heritage Stones
Heritage stones are building and ornamental stones that have special significance in human culture. The papers in this volume discuss a wide variety of such materials, including stones from Europe, Asia, North and South America, Africa and Australia. Igneous (basalt, porphyry, granite), sedimentary (sandstone, limestone) and metamorphic (marble, quartzite, gneiss, soapstone, slate) stones are featured. These have been utilized over long periods of time for a wide range of uses contributing to the historical fabric of the built environment. Many of these stones are of international significance and potential Global Heritage Stone Resources – stones that have the requisite qualities for international recognition by the Heritage Stones Subcommission of the International Union of Geological Sciences. The contributions in this volume bring together diverse information on these stones, ranging from their geological setting and quarry locations to mechanical properties, current availability and uses over time. As such, the papers can serve as an entry into the literature on these important stones.
Trentino Porphyry, Italy
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Published:October 21, 2020
Abstract
Trentino Porphyry is an igneous rock composed of rhyolitic–rhyodacitic ignimbrites. It belongs to the Athesian Volcanic Group, a widespread calc-alkaline magmatic association of Lower Permian age (280–270 Ma) occurring in the Trentino-Alto Adige region, north Italy. Extraction and processing are currently carried out in Trento Province, particularly in the region of Cembra Valley and its surroundings. Initially introduced for road setts throughout Trentino and Südtirol, Trentino Porphyry has progressively become one of the most important materials for paving and facing in Europe and all over the world, where it is appreciated and renowned for its durability. It has successively acquired an unquestionable versatility of application, thanks to a rare mix of mineralogy and textural and structural features, combined with excellent technical properties. Given the role played by this stone in almost any aspect of the area – cultural, architectural, production and social – it is proposed for candidacy as a Global Heritage Stone Resource.
- building stone
- calc-alkalic composition
- chemical composition
- color
- construction materials
- durability
- engineering properties
- Europe
- geologic sites
- igneous rocks
- ignimbrite
- Italy
- Lower Permian
- magmatism
- mineral composition
- Paleozoic
- Permian
- petrography
- porphyry
- pyroclastics
- quarries
- rhyodacites
- rhyolites
- Southern Europe
- textures
- Trentino
- Trentino-Alto Adige Italy
- Trento Italy
- utilization
- volcanic rocks
- Cembra Valley
- Athesian Group
- Global Heritage Stone Resources
- Subtirol Italy