Stratigraphy and petrology of the Miocene Montjuïc delta

The Neogene rift in the Catalan Coastal Ranges, which is located in the NE part of the Eastern Iberian Margin, corresponds to a system of grabens formed at the north-western edge of the Valencia Trough. In the central part of the Catalan Coastal Ranges are the Vallès-Penedès half-graben in the onsho...

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Autores: Gómez-Gras, David|||0000-0002-8539-5739, Parcerisa Duocastella, David|||0000-0001-8071-9936, Calvet i Rovira, Francesc, Porta i Casanellas, Jaume, Solé De Porta, Nuria, Civís Llovera, Jorge
Tipo de recurso: artículo
Fecha de publicación:2001
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:182203
Acceso en línea:https://ddd.uab.cat/record/182203
Access Level:acceso abierto
Palabra clave:Stratigraphy
Sedimentology
Petrology
Litharenites
Serravallian
Barcelona
Estratigrafía
Sedimentología
Petrología
Litoarenitas
Serravalliense
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oai_identifier_str oai:ddd.uab.cat:182203
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Stratigraphy and petrology of the Miocene Montjuïc delta
(Barcelona, Spain)
title Stratigraphy and petrology of the Miocene Montjuïc delta
spellingShingle Stratigraphy and petrology of the Miocene Montjuïc delta
Gómez-Gras, David|||0000-0002-8539-5739
Stratigraphy
Sedimentology
Petrology
Litharenites
Serravallian
Barcelona
Estratigrafía
Sedimentología
Petrología
Litoarenitas
Serravalliense
title_short Stratigraphy and petrology of the Miocene Montjuïc delta
title_full Stratigraphy and petrology of the Miocene Montjuïc delta
title_fullStr Stratigraphy and petrology of the Miocene Montjuïc delta
title_full_unstemmed Stratigraphy and petrology of the Miocene Montjuïc delta
title_sort Stratigraphy and petrology of the Miocene Montjuïc delta
dc.creator.none.fl_str_mv Gómez-Gras, David|||0000-0002-8539-5739
Parcerisa Duocastella, David|||0000-0001-8071-9936
Calvet i Rovira, Francesc
Porta i Casanellas, Jaume
Solé De Porta, Nuria
Civís Llovera, Jorge
author Gómez-Gras, David|||0000-0002-8539-5739
author_facet Gómez-Gras, David|||0000-0002-8539-5739
Parcerisa Duocastella, David|||0000-0001-8071-9936
Calvet i Rovira, Francesc
Porta i Casanellas, Jaume
Solé De Porta, Nuria
Civís Llovera, Jorge
author_role author
author2 Parcerisa Duocastella, David|||0000-0001-8071-9936
Calvet i Rovira, Francesc
Porta i Casanellas, Jaume
Solé De Porta, Nuria
Civís Llovera, Jorge
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Stratigraphy
Sedimentology
Petrology
Litharenites
Serravallian
Barcelona
Estratigrafía
Sedimentología
Petrología
Litoarenitas
Serravalliense
topic Stratigraphy
Sedimentology
Petrology
Litharenites
Serravallian
Barcelona
Estratigrafía
Sedimentología
Petrología
Litoarenitas
Serravalliense
description The Neogene rift in the Catalan Coastal Ranges, which is located in the NE part of the Eastern Iberian Margin, corresponds to a system of grabens formed at the north-western edge of the Valencia Trough. In the central part of the Catalan Coastal Ranges are the Vallès-Penedès half-graben in the onshore and the Barcelona half-graben in the offshore, which are separated by the Garraf and the Collserola- Montnegre horsts. Montjuïc hill is a tilted block, which is located to the S of the Barcelona city, between the Collserola-Montnegre horst and the Barcelona half-graben. The Middle Miocene section of Montjuïc is constituted by an alternation of conglomerate, sandstone, mudstone and marlstone beds. The Montjuïc section was divided into four lithostratigraphic units from base to top: (1) The Morrot conglomerate and sandstone Unit, interpreted as delta plain deposits; (2) the Castell conglomerate, sandstone and mudstone Unit considered as proximal delta front deposits; (3) the Miramar marlstone Unit attributed to prodelta deposits; and (4) the Mirador conglomerate, sandstone and mudstone Unit interpreted as delta front deposits. As regards the foraminifera association, the Miocene of Montjuïc may be attributed to the N9-N10 zones of Blow, indicating a Serravallian age. The palaeobotanical record suggests that the climate during the deposition of the Miocene of Montjuïc was temperate, warm and humid. The sandstones and conglomerates are litharenites and lithorudites; they show variable amounts of matrix and are well cemented. The main framework components are quartz, rock fragments and K-feldspar. The Collserola mountain, where Palaeozoic materials crop out is the deduced source area. Montjuïc sandstones are characterized by an early silicic cementation consisting of K-feldspar overgrowths, quartz overgrowths, mesoquartz intergranular cement and a microquartz transformation of a former detrital matrix. A surface cementation is considered for these cements in the absence of compaction and the geological setting.
publishDate 2001
dc.date.none.fl_str_mv 2
2001-01-01
2001
2001-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
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url https://ddd.uab.cat/record/182203
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
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dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
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spelling Stratigraphy and petrology of the Miocene Montjuïc delta(Barcelona, Spain)Gómez-Gras, David|||0000-0002-8539-5739Parcerisa Duocastella, David|||0000-0001-8071-9936Calvet i Rovira, FrancescPorta i Casanellas, JaumeSolé De Porta, NuriaCivís Llovera, JorgeStratigraphySedimentologyPetrologyLitharenitesSerravallianBarcelonaEstratigrafíaSedimentologíaPetrologíaLitoarenitasSerravallienseThe Neogene rift in the Catalan Coastal Ranges, which is located in the NE part of the Eastern Iberian Margin, corresponds to a system of grabens formed at the north-western edge of the Valencia Trough. In the central part of the Catalan Coastal Ranges are the Vallès-Penedès half-graben in the onshore and the Barcelona half-graben in the offshore, which are separated by the Garraf and the Collserola- Montnegre horsts. Montjuïc hill is a tilted block, which is located to the S of the Barcelona city, between the Collserola-Montnegre horst and the Barcelona half-graben. The Middle Miocene section of Montjuïc is constituted by an alternation of conglomerate, sandstone, mudstone and marlstone beds. The Montjuïc section was divided into four lithostratigraphic units from base to top: (1) The Morrot conglomerate and sandstone Unit, interpreted as delta plain deposits; (2) the Castell conglomerate, sandstone and mudstone Unit considered as proximal delta front deposits; (3) the Miramar marlstone Unit attributed to prodelta deposits; and (4) the Mirador conglomerate, sandstone and mudstone Unit interpreted as delta front deposits. As regards the foraminifera association, the Miocene of Montjuïc may be attributed to the N9-N10 zones of Blow, indicating a Serravallian age. The palaeobotanical record suggests that the climate during the deposition of the Miocene of Montjuïc was temperate, warm and humid. The sandstones and conglomerates are litharenites and lithorudites; they show variable amounts of matrix and are well cemented. The main framework components are quartz, rock fragments and K-feldspar. The Collserola mountain, where Palaeozoic materials crop out is the deduced source area. Montjuïc sandstones are characterized by an early silicic cementation consisting of K-feldspar overgrowths, quartz overgrowths, mesoquartz intergranular cement and a microquartz transformation of a former detrital matrix. A surface cementation is considered for these cements in the absence of compaction and the geological setting.La Cordillera Costero Catalana se sitúa en el NE del margen ibérico. Constituida por un sistema de semi-grabens neógenos, esta cordillera presenta un conjunto de fallas de zócalo con orientación NE-SW a ENE-SWS, las cuales actuaron como fallas compresivas durante la orogenia Alpina y, algunas de ellas, como fallas normales durante la extensión neógena (falla del Vallès-Penedès, falla de Camp). También aparece un conjunto de fallas direccionales con orientación NW-SE que, en algunos casos, afecta a las fallas NE-SW. En la parte central de la Cordillera Costero Catalana se encuentran los semi-grabens del Vallès-Penedès y de Barcelona, separados por los horsts de Collserola-Montnegre y del Garraf. El sector de Montjuïc, al S de la ciudad de Barcelona, se sitúa entre el horst de Collserola-Montnegre y el semi-graben de Barcelona y constituye un pequeño bloque basculado adosado al graben de Barcelona. La sucesión de Montjuïc tiene 200 m de potencia, está formada por una alternancia de lutitas, margas, areniscas y conglomerados y se subdivide en cuatro unidades litostratigráficas: (1) Areniscas y conglomerados del Morrot (84 m), que se interpretan como depósitos de llanura deltaica. (2) Lutitas, areniscas y conglomerados del Castell (100 m), organizados en 5 secuencias grano y estratocrecientes, y que corresponden a depósitos de frente deltaico proximal. (3) Margas de Miramar (15 m) con bivalvos, equinodermos, restos de plantas y bioturbaciones, que son interpretadas como depósitos pro-deltaicos. (4) Conglomerados, areniscas y lutitas del Mirador (20 m) con fósiles marinos, que corresponden a depósitos de frente deltaico. Considerando las especies de foraminíferos planctónicos que se han encontrado, estos sedimentos pertenecen a las biozonas N9-N10 de Blow y su edad es Serr avalliense. El registro paleobotánico sugiere un clima cálido-templado y humedo durante la sedimentación del Mioceno de Montjuïc. Del análisis petrológico de las muestras se deduce que las areniscas de Montjuïc son textural y composicionalmente inmaduras, con un contenido en matriz va r i a ble (0-20%) y una gran cantidad de granos fácilmente alterables. El esqueleto está formado por cuarzo (35%), fragmentos de roca (20%) de una gran variedad litológica (granito, filita, aplita, pegmatita, radiolarita,...) y feldespato potásico (9%). Se pueden clasificar como litoarenitas o como gr a u vacas líticas, dependiendo de su contenido en matriz, procedentes de la erosión de las formaciones paleozoicas del horst de Collserola. Las areniscas de Montjuïc se caracterizan por una cementación silícica temprana que comporta el desarrollo de sobrecrecimientos de feldespato potásico y cuarzo, cemento intergranular de mesocuarzo y la transformación de la matriz detrítica a microcuarzo. Debido a la cementación temprana los efectos de la compactación mecánica son muy limitados. Por otro lado, la situación de la montaña de Montjuïc dentro del contexto tectónico regional es la causante de que no se haya producido un notable enterramiento y, por lo tanto, la diagénesis es de carácter superficial. 22001-01-0120012001-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/182203reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1822032026-06-06T12:50:31Z
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