Abstract
Localized in the north of Portugal, Serra do Marão is part of a mountainous range that separates the mountains of Entre Douro e Minho from the plateaux of Trás-os-Montes. Weather characteristics of Quaternary coldest times were very important in terms of morphogenetic processes, which acted on its slopes, creating deposits that, nowadays, are conditioning the present dynamics.
Highlights
The Serra do Marão is a mountainous massif situated in the North of Portugal formed mainly of Palaeozoic structures
During the Quaternary the action of the cold weather was very important in terms of the morphogenetic processes that acted on the slopes
In the schist areas there are several depressions of tectonic origin, but the fundamental characteristic is in this case the regulation of the slopes by deposits related to morphogenetic processes which took place in the recent Quaternary and which were caused by the freeze/thaw action
Summary
The Serra do Marão (as it is called locally) is a mountainous massif situated in the North of Portugal formed mainly of Palaeozoic structures. It is strongly marked by the Hercynian orogeny, which is responsible 34 foralargenumberoffaultsandfractures.Neo-tectonic phenomena, which are quite common in northern Portugal, influenced this structure and created new faults which made the morphostructure of this area even more complex. During the Quaternary the action of the cold weather was very important in terms of the morphogenetic processes that acted on the slopes. The deposits regularised the slopes; on the other, they conditioned the present dynamics, as will be demonstrated in this paper
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