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1 March 2002 Geologic evidence for the incorporation of flood tidal deltas at Tavira Island, southern Portugal
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Abstract

Tavira Island, the largest barrier island on Portugal's Algarve coast, exhibits a broad backbarrier area that probably consists of relict flood tidal deltas that were incorporated when associated tidal inlets closed. The tidal deltas are preserved as lobate landforms extending into the marsh, and are bordered by linear, partially infilled depressions that resemble flood channels on modern tidal deltas in the region. The origin and evolution of the incorporated deltas and the location of former inlets were investigated using a dataset of 6.7 km of ground-penetrating radar (GPR) profiles and more than 30 cores. The data reveal a complex stratigraphic framework including a series of lateral facies changes that are interpreted relative to the incorporated tidal delta model and sedimentary environments as seen in the modern barrier chain.

Geologic evidence for the incorporation of flood tidal deltas at Tavira Island, southern Portugal
©Coastal Education and Research Foundation, Inc. 2002
Walter A. Barnhardt, Ramon Gonzalez, Joseph T. Kelley, William J. Neal, Orrin H. Pilkey, H. Jose, and Joao A Dias "Geologic evidence for the incorporation of flood tidal deltas at Tavira Island, southern Portugal," Journal of Coastal Research 36(sp1), (1 March 2002). https://doi.org/10.2112/1551-5036-36.sp1.28
Published: 1 March 2002
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