UPPER JURASSIC OUTCROPS ALONG THE CALDAS DA RAINHA DIAPIR, WEST CENTRAL PORTUGAL: A REGIONAL GEOHERITAGE OVERVIEW

Article English OPEN
JORGE DINIS ; CRISTINA BERNARDES (2004)
  • Publisher: Università degli Studi di Milano
  • Journal: Rivista Italiana di Paleontologia e Stratigrafia (issn: 0035-6883, eissn: 2039-4942)
  • Related identifiers: doi: 10.13130/2039-4942/6321
  • Subject: Paleontology | QE1-996.5 | QE701-760 | Geology

The Mesozoic Portuguese geological heritage is very rich and varied, a legacy of the position in the western margin of Iberia and its relationship with the evolution of the North Atlantic, with an interesting tectonic history since the Late Triassic. Regarding the Upper Jurassic several connections can be established between the tectonics and the stratigraphic record in the area surrounding the Caldas da Rainha structure: the basement and salt pillow control on deposition; the beginning of a diapiric and magmatic cycle associated to the on-set of sea-floor and the exhumation of both Jurassic deposits and the core of their controlling diapirs. The nature of the outcrops and richness in sedimentary environments, related with the different phases of rifting, is a remarkable case for extensional basin studies. Geological sites can be of regional, national or international importance due to scientific, educational, economical, social or historical reasons. The present proposal can be considered as a model for the establishment of tourist/educational routes with a strong component in communication on Earth Sciences, integrating social and historical aspects at a regional level. The recognition of those sites as geoheritage may contribute to a more sustainable management, in particular because it allows the achievement of a critical dimension for the investment in human resources and marketing. In Portugal, recent legal evolution might be considered promising. Nevertheless, since implementation of the concept of protected site depends on the approval of detailed management programs, there are frequent delays, misinterpretations and disrespect of legislation. The strategy to be adopted must integrate conservation, scientific studies and science communication in projects with economic and social interest.
  • References (25)
    25 references, page 1 of 3

    Be rnardes C.A., Corrocharrro A. Ea Reis, R.P (1991) - Evoh-rgicr do sistcr.nl dc delters entrangados do Juríssrco supcrior dc S. Mertinho do Porto, Bacia Lusitànic:r. Arquitcctura sequcnci,rl e controlos scdir.nent,rrcs. Contun. Seru. Gcol. Port ug,t l, 7 7 : 7 7 -88, I-isbon.

    Canérot J., R",t J., Betiste Iì., Manuppelh G. & Peybcrrrùs B. (1995) - Nouvelle intcrprc<trtion structur;rle et gc<odvr-r,rmiquc dc l;1 nlarqc rtlantique portug:rise dans le secteur de Ctrlcltrs da Rainha (Portugal). C. R. Acad. Sci., II;r, ll0: 513-510, P.rris.

    Capotc R. (1983) - Lir fracturacion subsccuente l la oroqenitr hercínicr. In: C:rmbr J.A et al. (coord.) - Liitro Jubilar J.M. Rios: Geohtgia dc Espana 2. Inst. Gcol. Min. Esp;rnt: l,/-l). lvlaoild.

    Choffat P (1882) - Notc prólimin;rire sur lcs r';rllées tvpì.roniqucs ct lcs e<ruptior-rs d'ophite ct dc tcschénitc au Portugal. Bull. Soc. géol. France, l0: 267-288, Paris.

    Cook PJ (1998) - The role of the eirrth scicnccs in sustrrinins our lifc-support svstcr.n. Conun. Sen,. Geol. Portugal, 85:3-18. Lisbon.

    Dinis J.L. & Rcy J. (2001) - l-owcr Cretaceous unconfornritics rehtcd with tectonic cvcnts in the western lberi:rn merrs.in. Gcotemas,3, l: 141-1,{3, Madrid.

    Dinis J.L. 8c Trincio P ( 1995) - Re cognition and stratigraphicrl significance of the Aptirn unconforr.nitv in thc Lusitanian Brsin, Poltugll. Cretaceous Researclt, I6: I7l-I86, London.

    Durant I. 0992) - \What is scic'ntific literacy? In: Durant J. & GregoryJ. (eds.) - Science and culture in Europe. Sciencc Museum: 129 -137, London.

    Eder W (1999ìr -'UNESCO GEOPARKS" - ;Ì ne$, initietive for prote'ction rnd sustainrblc devclopr-ne nt of the carth's heritrgc. N. Jb. Geol. Palàont. Abh.,214, 1/2: 353-358, Stuttgirrt.

    Ferreira M.P & Macedo C.R. (1983) Igneous rocks in thc diapiric are:rs of thc westcrn portusuesc bordcr: The K-Ar ages and settinss of thc UpperJurassic suite. Men. Not. pub. Mus. Lab. Min. Ceol. Univ. Cointbra,96: 159-181, Coinrbr:r.

  • Metrics
    No metrics available
Share - Bookmark