Establishment of the Heritage Stone Task Group (HSTG)

Cooper, Barry; Marker, Brian R.; Pereira, Dolores; Schouenborg, Björn

doi:10.18814/epiiugs/2013/v36i1/002

Cited by 56 publications

(31 citation statements)

References 3 publications

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“…Therefore, data regarding its physical or mechanical behaviour are scarce. Previous published characterisations showed high variations in some of the physical and mechanical properties [5,11], but a work that is being carried out at present will show that these characteristics are closely related to the different states of weathering of the rock, the different outcrops that are found in the area and the direction of the testing, regarding the sub-horizontal foliation always present in this granite ( Table 1). Weathered granites show high irregularity of the physical-mechanical properties, leading to a very different resistance to water action in ashlars from the same quarry [18].…”

Section: Martinamor Granitementioning

confidence: 76%

“…The most characteristic stone used in most of the foundations of the historic buildings in the centre of Salamanca is a leucogranite containing clusters of elongated tourmaline crystals, a fabric that inspired the local quarrymen to give it the name of Piedra Pajarilla (little bird stone) [4,[10][11][12]. This granite has been proposed as a candidate for the designation of Global Heritage Stone Resource [10] and together with other stones that crop out in the province and are used in historic buildings of Salamanca, they have been proposed as a candidate for the designation of Global Heritage Stone Province [12].…”

Section: Introductionmentioning

confidence: 99%

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Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

2019

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Martinamor granite has been used for centuries in the monumental buildings of Salamanca city. In this study, the fracturing pattern of the Martinamor granite outcrops was evaluated in order to assess the possibility of supplying material for the restoration of heritage monuments. Several joint sets with a mean joint spacing lower than one meter compose the fracturing pattern, making the massive exploitation of this granite impossible. Only small blocks for restoration can be obtained; therefore, the outcrops should be protected for such purpose. The area of outcrops and ancient quarries, as well as that of mining activities from the same period, should be preserved as examples of historical extraction techniques and as a remembrance of our geological-materials-based society. Several proposals are presented for the geoconservation of the site.

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Section: Martinamor Granitementioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

2019

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“…For the purpose of GHSR nomination, the HSTG Terms of Reference state that citations shall contain specific information. This is further discussed in Cooper et al (2013) land and will continue to be mined with planning permission for the next 40 years by Albion Stone plc. Reserves on the island accessed through mining represent about 400 years of production at the current rate of extraction.…”

Section: Ghsr Nomination/citation Requirementsmentioning

confidence: 99%

“…This paper offers necessary detail in publication that is required for GHSR assessment of Portland Stone by the Board of Management of the Heritage Stone Task Group (HSTG) as specified in the Task Group's "Terms of Reference". Cooper et al (2013) report the establishment of HSTG. Further details about the development of the GHSR designation can also be found at the Global Heritage Stone website, www.globalheritage stone.org.…”

Section: Introductionmentioning

confidence: 99%

Portland Stone: A nomination for “Global Heritage Stone Resource” from the United Kingdom

Hughes¹,

Lott²,

Poultney³

et al. 2013

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The defining characteristics of a GHSR are succinctly addressed in the HSTG "Terms of Reference" that have been approved, following wide consultation, by IUGS at its Executive Committee Meeting in San Sebastian, Spain in February 2012. An approved GHSR nominee must have a cultural history encompassing a significant period. The HSTG Terms of Reference advise that this period must be at least 50 years. Also crucial is that a GHSR needs to have been utilised in significant works, be they in buildings, sculpture or utilitarian applications. Wide geographical use, extending if possible to numerous countries, is also noteworthy although not an essential GHSR characteristic. In addition recognition as a cultural icon, potentially including association with national identity or a significant individual contribution to architecture is valuable. In the case of Portland Stone there is an important association with famous architect, Sir Christopher Wren (1632-1723), and its use for Commonwealth war graves. Contemporary quarrying and hence the ongoing availability of a GHSR for construction can enhance the status of a GHSR and hence is also beneficial. As a consequence of this availability, technical investigations are encouraged, and ongoing use of the GHSR stone will be promoted. With contemporary quarrying, GHSR designation may safeguard the resource from future sterilisation resulting from quarry closure. Such sterilisation has long been a problem given the common close proximity of dimension stone quarries to other human activities. A model GHSR nomination and citation The proposal of "Portland Stone" from the United Kingdom as a GHSR herein is the first GHSR proposal to be offered and discussed utilising the HSTG Terms of Reference. The authors suggest that Portland Stone, with its existing availability, past use as well as heritage aspects, provides an ideal GHSR nomination and one that can be utilised as a future model. It is anticipated that GHSR proposals similar to the one provided here for Portland Stone will become part of the essential routine of GHSR nomination and citation preparation with such publications being placed before the HSTG Board of Management as part of the formal nomination, review and acceptance process and with approved citations being held by HSTG in the GHSR register. The HSTG Board comprises specialist representatives from all major natural stone producing regions, including Europe, North Portland Stone, a well known ooidal limestone of Jurassic age from the United Kingdom is here nominated as a suitable "Global Heritage Stone Resource". Portland Stone is considered to ideally fit the newly proposed designation as it has been utilised since Roman times in England and since the Middle Ages in the construction of major historic buildings including St Pauls Cathedral, British Museum and Bank of England in London. It was also the preferred building stone of Sir Christopher Wren, England's most famous architect. The international use of Portland Stone during the 20th century includes the United N...

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“…Navarro et al (2017) describe the importance of a white marble extracted in Andalucia since ancient times: White Macael. This marble is part of many historical buildings in Spain and has been presented as a candidate for recognition as Global Heritage Stone Resource (Cooper et al 2013). Pereira and Pérez-Castro (2017) show how art museums can be used as geoscience outreach if the stones used in sculptures, pedestals for sculptures, and the ornaments of the buildings are explained and characterized properly, and not only as Bstones^or Bmarbles^, when most of the times are not.…”

mentioning

confidence: 99%

Heritage Stones and Geoheritage

Pereira

Cárdenes

2019

Geoheritage

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Establishment of the Heritage Stone Task Group (HSTG)

Cited by 56 publications

References 3 publications

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

Portland Stone: A nomination for “Global Heritage Stone Resource” from the United Kingdom

Heritage Stones and Geoheritage

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Establishment of the Heritage Stone Task Group (HSTG)

Cited by 56 publications

References 3 publications

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

Portland Stone: A nomination for “Global Heritage Stone Resource” from the United Kingdom

Heritage Stones and Geoheritage

Contact Info

Product

Resources

About

Establishment of the Heritage Stone Task Group (HSTG)