The Neogene and Quaternary deposits of the Barcelona city through the high-speed train line
Salvany i Duran, Josep Maria (Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental)
Aguirre Rodríguez, Julio (Universidad de Granada. Departamento de Estratigrafía y Paleontología)

Data:	2020
Resum:	A total of 208 boreholes with continuous core sampling, drilled for the construction of the high-speed train line through the city of Barcelona and other nearby infrastructures, were studied. The correlation of the lithologic logs of these boreholes allows identifying five main depositional sequences bounded by sharp erosional surfaces: (1) lower Miocene, of alluvial origin; (2) middle Miocene, of deltaic-lacustrine origin; (3) lower Pliocene, of beach-shelf origin; (4) Pleistocene, of alluvial origin, and (5) Holocene, of deltaic origin. The erosive surfaces that separate these sequences represent important erosive hiatus linked to prolonged sea level falls at regional scale, which eliminated the upper part of each one. Sedimentation took place during decreasing intensity of extensional tectonic activity that mainly affected the Miocene deposits. The Plio-Quaternary units show their original structure apparently without tectonic alterations. Some new biostratigraphic data based on foraminifer assemblages allowed making accurate estimate of the age of the deposits.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Neogene ; Quaternary ; Barcelona ; Boreholes ; Foraminifera
Publicat a:	Geologica acta, Vol. 18 (2020) , p. 1-19 (Articles) , ISSN 1696-5728

Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/369988
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2020.18.10
DOI: 10.1344/GeologicaActa2020.18.10

19 p, 3.1 MB

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