17 documents found, page 1 of 2

Marine terrace staircases of western Iberia: Uplift rate patterns from rocky li...

The Western Iberian Peninsula is undergoing compressive tectonic reactivation, resulting in spatial and temporal variations of surface uplift. Uplift quantification can be undertaken in coastal settings using staircases of shore platforms developed onto rocky headlands. This study analyses two marine terrace staircases in central Portugal: Cape Raso - Abano beach and Cape Espichel. Geomorphic and stratigraphic ...

Plio-Quaternary coastal uplift along the western Iberian Margin: insights from ...

This study presents a detailed geomorphological and geochronological analysis of a marine terrace staircase developed into the Peniche Peninsula (Portugal), a rocky headland of Jurassic carbonate bedrock located in the central sector of the Western Iberian passive margin. The marine terrace levels are described morphologically and sedimentologically, but also dated using ESR and U-Series methodologies. The mari...

Iberia: insights from the Lower Mondego River terraces (central Portugal)

The Lower Mondego Valley (LMV), located in the Western Iberian passive margin which is under compressive tectonic reactivation since ca. 80 Ma, is used for deciphering long-term landscape evolution during the Quaternary and the control played by active tectonics, eustasy and climate. The elaboration of a detailed geomorphological map allowed the establishment of the spatial and temporal distribution of the diff...

Plio-Quaternary coastal uplift along the western Iberian margin: insights from ...

This study provides a detailed geomorphological study of the Peniche Peninsula, located in westernmost Iberia, a resistant rocky limestone headland subjected to high energy Atlantic Ocean coastal processes. We have used field mapping, surveying, sedimentary facies analysis, geochronology (electron spin resonance [ESR]; U-Series), but also identification of fossils and lithic artefacts, in order to: 1) reconstru...

Electron spin resonance dating of the culminant allostratigraphic unit of the M...

The Cenozoic basins of western Iberia have a culminant allostratigraphic unit (designated UBS13), which records the beginning of Atlantic drainage and predates the fluvial incision that led to the development of the present drainage networks. However, the available numerical dating is quite limited and mainly restricted to the lower-level terrace deposits. Therefore, this study uses for the first time the elect...

Geomorphic markers of Quaternary tectonics in Westernmost Iberia: insights from...

Plio-Quaternary coastal uplift along the western Iberian margin: insights from ...

Electron spin resonance dating of the culminant allostratigraphic unit of the M...

The Cenozoic basins of western Iberia have a culminant allostratigraphic unit (designated UBS13), which records the beginning of Atlantic drainage and predates the fluvial incision that led to the development of the present drainage networks. However, the available numerical dating is quite limited and mainly restricted to the lower-level terrace deposits. Therefore, this study uses for the first time the elect...

Geomorfologia,sedimentologia e datação absoluta de unidades sedimentares da zon...

Os terraços costeiros e os situados nos troços inferiores de importantes rios são arquivos terrestres de importantes regiões do Globo que permitem documentar as mudanças ambientais durante períodos de alto nível do mar e as mudanças climáticas ocorridas durante o Plistocénico.

GEOMETRIA DA UNIDADE ALOSTRATIGRÁFICA SLD13 (ca. 3,7 - 1,8 Ma) NO ALGARVE – INT...

ABSTRACT Analysis of 1/50,000 geologic maps allowed geometric characterization of the allostratigraphic unit SLD13 (probable age - latest Zanclean to Gelasian, ca. 3.7 to 1.8 Ma) in the Algarve onshore; it culminates the Cenozoic sedimentary infill. The sedimentary discontinuity at the SLD13 base (at 25 to 150 m asl) is a vast wave cut surface, with low slope, that in the mouth of the coeval rivers is an erosiv...