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- Holocene evolution of a barrier island system, Ria Formosa, South PortugalPublication . Sousa, Carlos; Boski, T.; Pereira, LauraHolocene evolution of the Ria Formosa barrier island system was studied through the examination of a large subsurface dataset acquired from 191 boreholes and five seismic refraction profiles. Two boreholes with total depths of 26 and 16.5 m were selected for a multi-proxy detailed laboratory analysis, including mean grain size distribution, organic matter (OM) content, color variation, shell identification, and benthic foraminifera assemblages. Selected cores are thought to be representative of the identified depositional sub-basins. Subsurface age data from 16 AMS C-14 dated samples were plotted against depth and resulted in a coherent age model of sedimentary infill. The system evolution was largely controlled by sediment availability, accommodation space, and Holocene sea level rise, first at a rapid rate of 7 mm/yr from 10 kcal yr BP to 7.25 kcal yr BP, followed by a slowdown to 1.1 mm/yr until present. A conceptual model for the origin and Holocene evolution of the Ria Formosa barrier island system implies three main steps, leading to the present system geomorphology: (1) marine flooding of incised palaeovalleys by the rapid transgression of palaeovalleys in the early Holocene
- Estudos sedimentares em dois estuários da costa oeste algarvia: relação cor-ferroPublication . Veiga-Pires, C.; Mariano, J.; Moura, Delminda; Castro, N.; Rogalski, M.; Boski, T.Os sedimentos estuarinos constituem valiosos registos das condições climáticas e ambientais regionais.
- Plio-pleistocene boundary: Olhos de Água oucropPublication . Moura, Delminda; Boski, T.The occurrence of rocky and sandy cliffs on the south coast of the Algarve is a consequence of tectonic movement since the Upper Miocene. The Algarve Basin was affected by uplift west of Olhos de Água and subsidence to the east. This process created local sedimentary basins in the easternmost part of the Algarve which filled with sediment throughout the Pliocene and Pleistocene (Moura & Boski, 1999). In contrast to the carbonate sediments formed on the continental shelf during the Miocene, the Pliocene and Pleistocene sediments are mostly siliclastic, deposited in littoral and continental environments. Rapid uplift and consequent erosion produced abundant clastic sediments, which were carried into the regional sedimentary basins.
- The aeolinites as a proxy to sea-level changes. Armação de Pêra Bay (Algarve, South Portugal)Publication . Moura, Delminda; Albardeiro, L.; Rodrigues, A. L.; Veiga-Pires, C.; Boski, T.Na Baía de Armação de Pêra a semelhança da distribução geográfica e dos atributos sedimentológicos entre os aeolianitos e as dunas, fazem com que este sector litoral seja um laboratório ao ar livre de grande interesse para o estudo da relação entre a génese de aeolianitos e as variações do nível médio relativo do mar (NMRM).
- Ludo Formation-a new lithostratigraphic unit in Quaternary of Central AlgarvePublication . Moura, Delminda; Boski, T.A new lithostratigraphic unit (Ludo Formation) is proposed aiming a more objective approach to mapping the Quaternary sedimentary series in the central Algarve.