This paper uses a combination of archaeological, geomorphological and radiometric data from the coast of Southern Apulia between Bari and Taranto for the reconstruction of sea-level change during the middle and late Holocene. In particular, beach sequences and wave cut platform suggest a relative sea-level highstand at about 1 ± 0.5 m a.s.l. at about 7.0-7.5 ka BP. Archaeological remains have been used as land or sea level indicators, the former represented by tombs, quarries, cisterns, the latter by harbour structures. The collected data show that sea level was lower than -3 m during t he Bronze Age; the catenae casts recognised on the submerged structures of the Roman augustan harbour of Egnatia (1st century BC) indicate a position of high tide sea level at about 3 m below present mean position. In summary, the comparison between geomorphological, archaeological and radiometric data suggests a high sea-level stand corresponding to a maximum Holocen transgression at about 7.0-7.5 ka BP, followed firstly by a fall of sea level until the Bronze Age and then by a rise to the present position. This evidence is in contrast with the results of glacio-eustatic models and could be due to the fact that southern Italy is not involved in the flexural response to Northern Hemisphere deglaciation.
Middle to late Holocene relative sea-level changes recorded on the coast of Apulia (Italy)
AURIEMMA, Rita;P. Sansò
2004-01-01
Abstract
This paper uses a combination of archaeological, geomorphological and radiometric data from the coast of Southern Apulia between Bari and Taranto for the reconstruction of sea-level change during the middle and late Holocene. In particular, beach sequences and wave cut platform suggest a relative sea-level highstand at about 1 ± 0.5 m a.s.l. at about 7.0-7.5 ka BP. Archaeological remains have been used as land or sea level indicators, the former represented by tombs, quarries, cisterns, the latter by harbour structures. The collected data show that sea level was lower than -3 m during t he Bronze Age; the catenae casts recognised on the submerged structures of the Roman augustan harbour of Egnatia (1st century BC) indicate a position of high tide sea level at about 3 m below present mean position. In summary, the comparison between geomorphological, archaeological and radiometric data suggests a high sea-level stand corresponding to a maximum Holocen transgression at about 7.0-7.5 ka BP, followed firstly by a fall of sea level until the Bronze Age and then by a rise to the present position. This evidence is in contrast with the results of glacio-eustatic models and could be due to the fact that southern Italy is not involved in the flexural response to Northern Hemisphere deglaciation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
