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El patrimonio geológico del Ordovícico y Silúrico de la región de Arouca (Portugal)

Sá, Artur Abreu and Gutiérrez Marco , Juan Carlos and Rocha, Daniela Maria Teixeira da and Rábano , Isabel and Piçarra, José Manuel and Brilha, José Bernardo Rodrigues and Sarmiento, Graciela Noemí and Valério, Manuel (2008) El patrimonio geológico del Ordovícico y Silúrico de la región de Arouca (Portugal). Geogaceta, 44 . pp. 95-98. ISSN 0213-683X

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Abstract

The studied region is situated in the Aveiro district, about 50 km SW of Oporto (northern Portugal) and has a
rich geological, biological and cultural heritage. The Arouca Geopark was formally established there in late
2007, under the auspices of Arouca’s Municipal Chamber, to reunite 36 geosites from which some of them
involve remarkable Ordovician and Silurian rocks and fossils. Outcrops of both periods belong to the Valongo-
Tamames syncline of the Central Iberian Zone. Lower Palaeozoic rocks around the Canelas Slate Quarry are of
special interest, leading to the creation of a geotouristic route visiting three Ordovician units (Santa Justa quartzites,
Valongo shales and Sobrido quartzite plus glaciomarine diamictites) and one Silurian (graptolitic black shales),
as well as a Roman gold mine dug in the Lower Ordovician quartzites. However, the most outstanding geosite
is the quarry itself, where Middle Ordovician giant trilobites (up to 70 cm in size) and trilobite clusters (up to
thousands of specimens) occur in large slabs of slate and are recovered during the exploitation. The Geological
Interpretation Centre of Canelas, located near the quarry and open since 2006, is one of the main tourist
attractions of the Arouca Geopark, created to preserve and disseminate knowledge about trilobites and the
Ordovician world, and having received more than 10,000 visitors in its first 17 months.


Item Type:Article
Uncontrolled Keywords:Geological heritage, Ordovician, Silurian, Arouca Geopark, Portugal.
Subjects:Sciences > Geology > Paleontology
Sciences > Geology > Stratigraphic geology
ID Code:12240
Deposited On:14 Feb 2011 13:19
Last Modified:06 Feb 2014 09:20

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