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Jorge Sanjurjo-Sánchez
Instituto Universitario de Geología “IsidroPargaPondal”. Universidad de A Coruña. España
Carlos Arce-Chamorro
Instituto Universitario de Xeoloxía “Isidro Parga Pondal”. Universidade da Coruña. España,
Víctor Barrientos
Instituto Universitario de Xeoloxía “Isidro Parga Pondal”. Universidade da Coruña. España,
Ana Goy-Diz
Facultade de Humanidades, Universitdade de Santiago de Compostela. Lugo.
Vol. 42 (2020), Articles, pages 53-68
Submitted: Dec 15, 2020 Published: Dec 28, 2020
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Fluvial sediments provide environmental records of the Quaternary. In some cases, fluvial deposits are caused by anthropogenic processes that cause changes in the water regime of some river stretches. This is the case of dams. It has been reported that some dams or partial damming systems existed in the past, at least from some thousands of years ago. Such dams were used for fishing purposes and are referred as fishing weirs. In a recently published work it has been demonstrated that a fluvial thick deposit was caused by a damming system in a river of NW Iberia (River Miño, Pontevedra). Optically stimulated luminescence (OSL) provided the burial age of such fluvial deposit, showing a 1300-year-old fluvial record. The sedimentation rates of the record did not match with known climate fluctuations in the area. In this work, the sedimentation phases of such record are identified, and the detrital and organic matter content is studied to assess any change occurred in the environmental and fluvial conditions during the deposition period of the record that ranges from 814±134 to 1837±11 AD.

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