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Granite geomorphology and its geological controls, Serra da Estrela, Portugal

2014-07-26Journal article Open access
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dc.contributor.authorMigon, Piotr
dc.contributor.authorVieira, Goncalo
dc.date.accessioned2018-12-19T15:10:24Z
dc.date.available2018-12-19T15:10:24Z
dc.date.issued2014-07-26
dc.description.abstractSerra da Estrela is an elevated granite massif in central Portugal, characterized by extensive plateau surfaces incised by deep valleys affected by Quaternary glaciation, bounded by steep fault-generated escarpments. The presence of seven major textural variants of granite provides an opportunity to study the relationships between lithology and relief, whereas DEM analysis helped to show the relationships between lithology and topography objectively. The higher ground is associated with fine- to medium-grained granites and is typified by planar surfaces of low gradient, with occasional angular tors and rock pedestals. Block fields built by angular material are common in the parts that were not previously glaciated. Less elevated parts of the plateau are supported by medium- to coarse-grained granites and show more varied topography, with an abundance of tors, boulder piles, and depressions. Lithological boundaries locally coincide with slope breaks but this is not the rule. In the northern part of the massif a deep topographic basin has evolved in biotite granite, whereas deeply incised valleys follow major fault lines. Geological controls show a hierarchy, in that gross relief reflects the pattern of tectonic uplift and subsidence, whereas lithology and then fracture patterns become more and more important if one focuses on smaller and smaller landforms.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMigon e Vieira., 2014. Granite geomorphology and its geological controls, Serra da Estrela, Portugal. Geomorphology 226. 1-14p.pt_PT
dc.identifier.doihttp://dx.doi.org/10.1016/j.geomorph.2014.07.027pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/6652
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectRock controlpt_PT
dc.subjectGranite Geomorphologypt_PT
dc.subjectTorspt_PT
dc.subjectDigital elevation modelspt_PT
dc.titleGranite geomorphology and its geological controls, Serra da Estrela, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage14pt_PT
oaire.citation.issue226pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleGeomorphologypt_PT
oaire.citation.volume226pt_PT
person.familyNameBrito Guapo Teles Vieira
person.givenNameGonçalo
person.identifier.ciencia-id2519-6583-CAEA
person.identifier.orcid0000-0001-7611-3464
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione8160967-527e-4d00-bc2c-404c6f4edece
relation.isAuthorOfPublication.latestForDiscoverye8160967-527e-4d00-bc2c-404c6f4edece

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