{rfName}
Up

Indexed in

License and use

Citations

34

Altmetrics

Grant support

We want to thank the editor (Dr. Jochen Erbacher), two anonymous reviewers, Dr. Sietske J. Batenburg and Dr. Jeremy R. Young for their constructive comments and valuable suggestions on the manuscript. This work was supported by the Spanish research projects, CGL2011-25894 and CGL2015-66604-R.

Analysis of institutional authors

Fraguas, AngelaCorresponding Author

Share

October 18, 2022
Publications
>
Article
No

Upper Sinemurian-Pliensbachian calcareous nannofossil biostratigraphy of the E Rodiles section (Asturias, N Spain): a reference section for the connection between the Boreal and Tethyan Realms

Publicated to:Newsletters On Stratigraphy. 51 (2): 227-244 - 2018-03-01 51(2), DOI: 10.1127/nos/2017/0401

Authors: Fraguas, Angela; Comas-Rengifo, Maria Jose; Goy, Antonio; Gomez, Juan J

Affiliations

UCM, CSIC, Inst Geociencias, Calle Jose Antonio Novais 2, Madrid 28040, Spain - Author
UCM, Fac Ciencias Geol, Dept Estratig, Calle Jose Antonio Novais 2, Madrid 28040, Spain - Author
UCM, Fac Ciencias Geol, Dept Paleontol, Calle Jose Antonio Novais 2, Madrid 28040, Spain - Author

Abstract

A total of 129 samples, Late Sinemurian-Pliensbachian in age, were collected from the well-dated and expanded E Rodiles section (Asturias, Northern Spain). 5 main events: the first occurrences (FOs) of Crepidolithus crassus, Similiscutum cruciulus, Biscutum novum, Lotharingius hauffii and Lotharingius sigillatus, were identified on the basis of continuously recorded and common taxa. The secondary events are based on taxa with a discontinuous record and are usually rare or extremely rare, especially in their initial and final ranges. They include the FOs of Orthogonoides hamiltoniae, Crepidolithus cantabriensis, Calyculus spp., Bussonius prinsii, Biscutum dubium, Biscutum finchii, Biscutum grande and Lotharingius barozii, and the first common occurrences (FCOs) of Calcivascularis jansae and L. hauffii. All the calcareous nannofossil bioevents recognized in this work are reliable and reproducible in the biostratigraphic scheme previously proposed for the Cantabrian Range, except for the FOs of C. crassus, O. hamiltoniae, C. cantabriensis, Calyculus spp., B. prinsii and B. dubium, which are new here. 3 calcareous nannofossil Zones (CNZs; NJ3, NJ4 and NJ5) and 4 calcareous nannofossil Subzones (CNSzs; NJ4a/b and NJ5a/b), were identified in the E Rodiles section, defining the base of the NJ3 Crepidolithus crassus CNZ for the first time in N Spain. This new biostratigraphical information is compared to schemes from NW Europe, Portugal, N France and Italy/S France. Based on this comparison, we hypothesized that O. hamiltoniae, C. crassus and Calyculus spp. could have Boreal affinities, first occurring in the Boreal Realm and spreading later to the Tethyan Realm, when there were predominantly southward currents in the Boreal seawaters. Contrarily, the FCO of C. jansae, which is considered a Mediterranean taxon, is recorded in the lower part of the Margaritatus Ammonite Zone (AZ), when the Tethyan currents were flowing northwards. With respect to other secondary events, discrepancies have been found in the FO of B. prinsii and B. dubium, probably due to the scarcity and high dissolution susceptibility of these taxa.

Keywords

AsturiasBasinBelemnitesBiohorizonsCalcareous nannofossilsCalibrationConnection areaEarly jurassicEpicontinental seawayEuropeEventsEvolutionNorthern spainPortugalToarcian

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Newsletters On Stratigraphy due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2018, it was in position 8/47, thus managing to position itself as a Q1 (Primer Cuartil), in the category Geology.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.22. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 3.17 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-18, the following number of citations:

  • WoS: 17
  • Scopus: 17

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 2025-07-18:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 1.
  • 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: 1 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.5.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Fraguas Herráez, Ángela Raquel) .

the author responsible for correspondence tasks has been Fraguas Herráez, Ángela Raquel.