Encontrados 4 documentos, a visualizar página 1 de 1
Optical dating of clastic deposits generated by an extreme marine coastal flood...
Cunha, P., Buylaert, J., Murray, A., Andrade, C., Freitas. M., Fatela, F., Munhá, J., Martins, A., Sugisaki, S.,Identification of past tsunamis is important for risk assessment and management of coastal areas. Obtaining accurate and precise ages of sediments originating from such extreme marine coastal floods is crucial for a reliable estimation of the recurrence interval of these often devastating events. We present here the results of quartz optical dating and 14C dating of two sites (Boca do Rio and Martinhal) on the ...
Geoarchaeology of Pleistocene open-air sites in the Vila Nova da Barquinha-Sant...
Martins, A.,; Cunha, P.,; Rosina, P., .; Oosterbeek, L.; Cura, S.,; Gomes, J.,; Grimaldi, S.,; Buylaert, J.,; Murray, A.,; Matos, JThis paper aims to provide insight into human occupation and landscape change during the Pleistocene in a central area of the Lower Tejo basin (Portugal). Detailed geomorphological mapping, coupled with lithostratigraphy, sedimentology and luminescence dating, supports the identification of a complete terrace staircase sequence. It consists of six gravely terraces located below the culminant (Pliocene) basin un...
Geomorphological correlation of the tectonically displaced Tejo River terraces ...
Martins, A., Cunha, P., Huot, S., Murray, A., Buylaert, J.,A suite of fluvial terraces (T1–T6,from top to bottom of the staircase) occur along a _70km stretch of the Tejo River in central Portugal, between the small towns of Gavião and Chamusca. Terrace correlation was based upon the following: (a)aerialphotograph analysis, geomorphological mapping and field topographic survey; (b) sedimentology of the terrace deposits, namely the maximum particle size, clast compositi...
Dating the Tejo river lower terraces in the Ródão area (Portugal) to assess the...
Cunha, P.,; Martins, A.; Huot, S.; Murray, A.; Raposo, L.,The Tejo river is one of the major drainages in Iberian Peninsula; it is a long-lived system (ca. 3.4 Ma) and provides an archive of long-term landscape development and environmental change controlled by tectonics, climate and eustasy. The most upstream Portuguese reach of the Tejo river, ∼200 km from the Atlantic coast, shows evidence for five fluvial terraces (T1 to T5) with elevations reaching more than 120 ...
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