Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12544/2267
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Villacorta Chambi, Sandra Paula
Evans, Kenneth G.
Torres Pérez Hidalgo, Trinidad de
Llorente Isidro, Miguel
Prendes Rubiera, Nicanor
Lima
Perú
Río Rimac
Andes
Holoceno
2019-09-01T05:58:11Z
2019-09-01T05:58:11Z
2019-06
Villacorta, S.P.; Evans, K.G.; De Torres, T.J.; Llorente, M & Prendes, N. (2019). Geomorphological evolution of the Rimac River’s alluvial fan, Lima, Peru. Geosciences Journal, 23(3): 409. Doi: 10.1007/s12303-018-0049-5.
1598-7477
https://hdl.handle.net/20.500.12544/2267
The alluvial fan of Lima is a complex landform, resulting from the sediment contributions of the Rimac River and the coalescence of the alluvial fans of the tributaries of the Rimac River. Depositional zones in the fan and changing main channel and distributary channels are influenced by the palaeo-relief inherited from a semi-arid climate and by the climatic changes. The upper sedimentary sequence of the fan, dominant on the Costa Verde, is of Upper Pleistocene–Holocene age. The sediments forming it are non-cohesive and are highly mobile during floods and earthquakes. The dominant features in this sequence, intertwined channel facies and laminar flows, were influenced by the Pleistocene–Holocene postglacial marine transgressions. A deeper understanding of the evolution of the Lima alluvial fan provides insight in to the fan’s future evolution in the framework of active tectonics and climate change. The Lima fan is an area with high human population density and is subjected to floods and debris flows resulting in subsequent loss of human life and properties. Therefore, the improved understanding of the fan’s evolution, resulting from this study, will contribute to a better definition of high risk areas of potential human disaster caused by these natural processes. Cyclic-fandevelopment, presently controlled by glacial sea level lows and palaeo-topography will continue regardless of human intervention in attempts to prevent natural disasters in Lima.
application/pdf
eng
The Geological Society of Korea
Geosciences Journal, volumen 23, número 3, Junio 2019. pp. 409-424.
info:eu-repo/semantics/restrictedAccess
Instituto Geológico, Minero y Metalúrgico – INGEMMET
Repositorio Institucional INGEMMET
Tectónica
Transgresión marina
Tectónica activa
Cambio climático
Geomorfología
Andean tectonics
Marine transgression
Climate change
Geomorphology
Holocene
Geomorphological evolution of the Rimac River’s alluvial fan, Lima, Peru
info:eu-repo/semantics/article
Geología
Suiza
10.1007/s12303-018-0049-5
Geosciences Journal
https://rdcu.be/bGJ1M
Peer reviewed

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