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Funds have come from Andalusian Governement (RNM-238). It is a contribution to the Research Center in Historical, Cultural and Natural Heritage (CIPHCN) of the University of Huelva. The constructive comments of J.P. Perez Panera, A. Otero and two anonymous reviewers are highly appreciated.

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Abad, MAuthorIzquierdo, TAuthor

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September 27, 2022
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LATE TORTONIAN-MIDDLE MESSINIAN PALAEOENVIRONMENTAL CHANGES IN THE WESTERN BETIC STRAIT (SW SPAIN)

Publicated to:Ameghiniana. 56 (4): 336-360 - 2019-07-01 56(4), DOI: 10.5710/AMGH.04.06.2019.3253

Authors: Luz Gonzalez-Regalado, Maria; Romero, Veronica; Abad, Manuel; Tosquella, Josep; Izquierdo, Tatiana; Gomez, Paula; Jose Clemente, Maria; Toscano, Antonio; Rodriguez Vidal, Joaquin; Miguel Caceres, Luis; Manuel Munoz, Juan; Prudencio, Maria Isabel; Dias, Maria Isabel; Marques, Rosa; Mara Garcia, Edith Xio; Isabel Carretero, Maria; Ruiz, Francisco; Monge, Guadalupe

Affiliations

Univ Atacama, Avda Copayapu 485, Copiapo, Chile - Author
Univ Guadalajara, Ctr Univ Tonala, Av Nuevo Perifer 555, Ejido San Jose Tatepozco 48525, Tonala Jalisco, Mexico - Author
Univ Huelva, CIPHCN, Fac Hurnanidades, Avda Tres de Marzo S-N, Huelva 21071, Spain - Author
Univ Huelva, Dept Ciencias Tierra, Avda Tres de Marzo S-N, Huelva 21071, Spain - Author
Univ Lisbon, Inst Super Tecn, C2TN, Estr Nacl 10 Km 139-7, P-2695066 Bobadela Lrs, Portugal - Author
Univ Rey Juan Carlos, ESCET, Dept Biol & Quim Fis & Quim Inorgan, C Tulipan S-N, Madrid 28933, Spain - Author
Univ Seville, Dept Cristal Mineral & Quim Agr, Seville 41071, Spain - Author
Univ Seville, Fac Matemat, Dept Estadist & Invest Operat, C Tarfia S-N, Seville, Spain - Author
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Abstract

During the late Neogene, the Mediterranean Sea was connected with the Atlantic Ocean by two straits: the northern Betic Strait and the southern Rifian Strait. In this paper, we analyze the main palaeoenviromental changes produced in the western sector of the Betic Strait during the late Tortonian-middle Messinian (7.4-6 Ma). The temporal evolution and statistical analysis of benthic foraminiferal assemblages both in cores and surface sections of the western Guadalquivir Basin (SW Spain) allow drawing an initial important deepening from the late Tortonian calcarenite coastal areas to the well oxygenated, upper slope palaeoenvironments of the latest Tortonian to early Messinian, with a latest Tortonian condensed horizon composed by glauconitic silts deposited in the middle-outer shelf. The lower Messinian silts and clays (7.2-6.3 Ma) were deposited in a upper slope scenario, with a small oxygen depletion at 6.48 Ma. The 6.3-6.2 Ma interval was characterized by an important sea level drop and the presence of low oxygenated, outer shelf palaeoenvironments in this area, coinciding with a global glaciation. Prior to the Messinian Salinity Crisis (5.97-5.33 Ma), the upper slope palaeoenvironments were initially re-established (similar to 6.2-6.1 Ma) and finally a new regressive period (similar to 6 Ma) preceded Messinian Salinity Crisis.

Keywords

AndaluciaAtlanticAtlantic oceanBenthic foraminiferaBetic straitCalcareniteChronologyConstraintsContinental-marginEvolutionForaminiferaFossil assemblageGuadalquivir basinGulfHistoryLate mioceneMediterranean seaNeogenePaleoceanographyPaleoenvironmentSalinity crisisSea level changeShelf-upper slopeShelf–upper slopeSpainSw spainTemporal evolutionTortonian-messinian boundary

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Ameghiniana due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2019, it was in position , thus managing to position itself as a Q2 (Segundo Cuartil), in the category Paleontology. Notably, the journal is positioned en el Cuartil Q3 for the agency WoS (JCR) in the category Paleontology.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-08-02:

  • WoS: 1
  • Scopus: 3

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-08-02:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 5 (PlumX).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Chile; Mexico; Portugal.