What question did this study set out to answer?

This research aims to refine the chronostratigraphic framework for the uppermost Sinemurian and Sinemurian–Pliensbachian transition in the Iberian region.

April 18, 2026Earth-Science ReviewsOpen Access

The uppermost Sinemurian and Sinemurian–Pliensbachian transition in Western and Northern Iberia: A chronostratigraphic review and correlation framework

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This research aims to refine the chronostratigraphic framework for the uppermost Sinemurian and Sinemurian–Pliensbachian transition in the Iberian region.
Comprehensive review of ammonite-based chronostratigraphic data
Analysis of key sections in Portugal and Spain
Compilation of stratigraphic data from various European and Pacific localities
Evaluation of ammonite zonal and subzonal correlations
Identified pronounced differences in stratigraphic completeness between ammonite zones
Established key chronological markers for correlation with the Pliensbachian GSSP
Found correlations between transgressive-regressive cycles and ammonite distribution
Documented significant faunal turnover linked to sea-level changes and carbon isotope excursions

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Implication

This review evaluates chronostratigraphic correlations in Iberia, revealing significant evolutionary turnover and stratigraphic completeness.

Cite This Study

Vitón et al. (2026) studied this question.

synapsesocial.com/papers/69e320e740886becb653fff1 https://doi.org/10.1016/j.earscirev.2026.105507

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Implication

This review evaluates chronostratigraphic correlations in Iberia, revealing significant evolutionary turnover and stratigraphic completeness.

The uppermost Sinemurian and Sinemurian–Pliensbachian transition in Western and Northern Iberia: A chronostratigraphic review and correlation framework

Key Points

Discussion

Implication

Cite This Study

The uppermost Sinemurian and Sinemurian–Pliensbachian transition in Western and Northern Iberia: A chronostratigraphic review and correlation framework

Key Points

Discussion

Implication

Cite This Study

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