Document Type : European UNESCO Geoparks:Original Article

Authors

1 Instituto de Geociencias (CSIC, UCM), and área de Paleontología GEODESPAL, Facultad CC. Geológicas UCM, José Antonio Novais 12, 28040 Madrid, Spain

2 School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Road, Portsmouth PO1 3QL, UK

3 Institute of Geology of the Czech Academy of Sciences, Rozvojová 269, 165 00 Praha 6, Czech Republic

Abstract

The Palaeozoic succession of the Sierra Norte de Sevilla UNESCO Global Geopark (Ossa Morena Zone of the Iberian Massif, SW Spain) includes a nearly complete Silurian succession, ca. 150 m thick, deposited in an outer shelf setting. In the core part of the Valle syncline, the El Pintado-1 section exhibits a condensed graptolite-rich Silurian black-shale facies ranging from the base of the Rhuddanian to the upper Ludfordian. Most of the standard graptolite biozones of the Silurian System have been identified in the section. The preliminary record of Llandovery graptolites in the lower part of the succession comprises more than 200 species, 19 of them new. The El Pintado-1 geosite is of enormous value for the world’s palaeontological heritage, reinforced by the future placement here of the GSSP for the base of the Telychian Stage. Due to its fragility and exclusively scientific nature, the section is not open to public visitors of the Geopark, and its difficult accessibility also adds some protection, favouring its conservation beyond the regional legislative framework.

Keywords