Abstract
Giant rock avalanches have been recognized and mapped in southern Peru, to the N of Tacna. The Cerro Caquilluco rock avalanche complex has a total volume of about 15 km3 and a length of 43 km, extending from 3,900 to 530 m a.s.l.. Mapping the internal structures, the scar features and the depositional lobes allowed to suggest that the rock avalanche complex developed as a sequence of successive failures affecting tuffaceous and conglomeratic formations forming a gently dipping monoclinalic slope. Assessment of lobes volume constrained the reconstruction of the source areas for the multiple failures and the successive rock avalanche simulations. Seismic triggering is suggested, whereas H/L vs volume relationships suggest a high mobility comparable to that of extremely mobile volcanic rock avalanches.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Acosta H, Alván A, Mamani M, Oviedo M, Rodriguez J (2010) Geología de los cuadrángulos de Pachía (36-v) y Palca (36-x), escala 1:50 000. INGEMMET, Bol., Serie A: Carta Geológica Nacional, 139, 100p., 7 mapas
Audin L, Bechir A (2006) Active tectonics as determinant factor in landslides along the Western Cordillera? Presented at the Congreso Peruano de Geologia, 13, Lima, Resumenes extendidos, Soc Geol del Peru xxii:237–239
Crosta G, Hermanns RL, Valbuzzi E, Dehls J, Yugsi Molina FX, Sepulveda S (2012) Slope instabilities along the Western Andean Escarpment and the main canyons in Northern Chile. Geophysical Research Abstracts 14, EGU2012-11343
Crosta G, Hermanns RL, Murillo PV (2012) Large rock avalanches in southern Peru: the Cerro Caquilluco–Cerrillos Negros rock slide—avalanche (Tacna, Tomasiri, Peru) EGU2012-11469
Crosta GB, Hermanns RL, Frattini P, Valbuzzi E (2014) Large slope instabilities in Northern Chile: inventory, characterization and possible triggerings. In: Proceedings of the 3rd world landslide Forum, 2–6 June 2014, Bejing, p 6
David C, Audin L, Comte D, Tavera H, Hérail G, (2005) Crustal seismicity and active tectonics in the Arica bend forearc. 6th international symposium on Andean Geodynamics (ISAG 2005, Barcelona), Ext. Abstracts: 206–210
Farias M, Charrier R, Comte D, Martinod J, Herail G (2005) Late Cenozoic deformation and uplift of the western flank of the Altiplano: evidence from the depositional, tectonic, and geomorphologic evolution and shallow seismic activity (northern Chile at 19° 30’S). Tectonics 24:4
Hall SR, Farber DL, Audin L, Finkel RC (2012) Recently active contractile deformation in the forearc of southern Peru. Earth Planet Sci Lett 337–338(2012):85–92
Hoke GD, Isacks BL, Jordan TE, Blanco N, Tomlinson AJ, Ramezani J (2007) Geomorphic evidence for post-10 Ma uplift of the western flank of the central Andes 18°30’–22°S. Tectonics 26, TC5021
McDougall S, Hungr O (2004) A model for the analysis of rapid landslide motion across three dimensional terrain. Can Geotech J 41:1084–1097
Sosio R, Crosta GB, Chen JH, Hungr O (2012) Modelling rock avalanche propagation onto glaciers. Quatern Sci Rev 47:23–40
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer International Publishing Switzerland
About this paper
Cite this paper
Crosta, G.B., Paolo, F., Elena, V., Hermanns, R.L. (2015). The Cerro Caquilluco–Cerrillos Negros Giant Rock Avalanches (Tacna, Peru). In: Lollino, G., et al. Engineering Geology for Society and Territory - Volume 2. Springer, Cham. https://doi.org/10.1007/978-3-319-09057-3_159
Download citation
DOI: https://doi.org/10.1007/978-3-319-09057-3_159
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-09056-6
Online ISBN: 978-3-319-09057-3
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)