First record of ammonites in the Bonarelli level (uppermost Cenomanian) of the Umbria-Marche succession

Donatelli, Ugo; Tramontana, Mario; Venturi, Federico

doi:10.3301/ijg.2009.05

Cited by 2 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…14d) with beds ranging from 10 to 30 cm in thickness, and containing pinkish to black chert layers, lenses and nodules (Coccioni and Galeotti 2003;Lanci et al 2010). A typical about 1-m-thick anoxic interval with black shales (the well-known Bonarelli level; Bonarelli 1891; Arthur and Premoli Silva 1982;Donatelli et al 2010, and references therein), characterises the upper portion of this formation, close to the boundary with the more recent Scaglia Rossa Formation. This latter (Lower Turonian p.p.-Lutetian p.p.)…”

Section: Scaglia Bianca and Scaglia Rossa Formationsmentioning

confidence: 90%

The Historic Centre of Urbino, UNESCO World Heritage (Marche Region, Italy): an Urban-Geological Itinerary Across the Building and Ornamental Stones

et al. 2021

View full text Add to dashboard Cite

The local and extra-regional (national and transnational) stones mainly used as building and ornamental materials in the historic centre of Urbino (UNESCO World Heritage List) were unravelled through a detailed geological and petrographic study. The types of building stones used in the past for the development of an urban centre were mostly affected by the availability of suitable geomaterials in the surrounding areas. For this reason, the stones found in the historical buildings of Urbino generally come from the local sedimentary formations (mostly limestones) belonging to the Umbria–Marche–Romagna Succession Auct., which crops out in the Northern Marche Apennines. Only some ornamental highly prized stones used for monuments and decorations come from both extra-regional Italian areas (Alps, other sectors of the Northern Apennines) and foreign countries (France, Egypt). A brief description of the Northern Marche geology was also reported to exactly match the local provenance of the stones, so highlighting the relationship between the territory and the architecture of Urbino. Because of obvious conservation reasons, no samples were collected from buildings or monuments and only autoptic observations, together with a detailed historical and bibliographic research, were carried out to identify the different materials and the provenance areas. Besides the availability of the local sedimentary rocks, we emphasised how the choice of the building and ornamental stones could have been also influenced by the historic period and artistic style, aesthetic features, economic and social importance of the building and/or monument and the relationship to some distinguished personality (e.g., Pope Clemente XI). An open-air stone itinerary across significant places (10 stops and additional sites and monuments in the urban area) is finally proposed for the best fruition of the geological and cultural heritage of Urbino, also aimed at geotourism development.

show abstract

Section: Scaglia Bianca and Scaglia Rossa Formationsmentioning

confidence: 90%