Los modelos genético-evolutivos del Sistema Central Español: implicaciones Morfotectónicas
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Los modelos genético-evolutivos del Sistema Central Español: implicaciones MorfotectónicasTítulo(s) alternativo(s)
Models of landscape evolution of the Spanish Sistema Central Range: Morphotectonics implicationsAutor(es)
Data
1994Cita bibliográfica
Cadernos do Laboratorio Xeolóxico de Laxe, 1994, 19: 91-118 ISSN: 0213-4497
Resumo
[Abstract] The characteristic morphostructure of the Spanish Central System corresponds to that of an ancient leveled massif, reactivated during the Tertiary Age by tectonic impulses related to the Alpine Orogeny; that is to say, it forms a block organized mountainous massif, or a «block mountain» o Although noumerous genetic models about the formation ofthe morphostructure ofthese mountains have been proposed, only three ofthem could be considered to be fundamental: the first one proposes a «polycyclic» or «hemicyclic» denudational and tectonic-uplift sequence; but, at the same time, it clearly shows a «stair-like» physiognomy shape (Piedmont bendlanch orPiedmonttreppen); the second one describes a «cyclic» or «bicyclic» model which could be in conection with a «block mountain» physiognomy; the last model suggests a denudational and tectonic-uplift interaction sequence, with an increase of the tectonic activity and an «etchplain» process development during the Tertiary periodo According to the three basic models pointed to aboye, two main possibilities can be taken into account to find out the tectonic implications in the evolution of the Spanish Central System landscape: the former implies that the tectonic movements and the denudational processes are alternative events in time; the latter implies that the tectonic and the denudational effects have a succesive and continous occurrenceo So, the most interesting thing would be to conclude something related to this issue; as has been stated, it would be necesssary to make a global interpretation of the tectonic setting and, as a consequence, of the reactivated landscapes formation of the Meseta Region in Central Spain. Therefore, it would be essential to consider the following aspects: the behaviour of the tectonic movements during the reactivation, the geographical and chronological distribution ofthe tectonic impulses, the origin ofthe stresses and their way of transmission, and the precise control of the present and the near present day tectonic movements in order to define the uplift and subsidence rates.
Palabras chave
Spanish Central Range
Block mountain
Morphoestructure
Morphotectonics
Piedmonttreppe
Landscape evolution
Block mountain
Morphoestructure
Morphotectonics
Piedmonttreppe
Landscape evolution
ISSN
0213-4497