Geodynamic significance of the Cenozoic deposits in the southern Peruvian forearc (16°25’S to 17°15’S): constraints by facies analysis and sediment provenance.

by Aldo Alvan
Doctoral thesis
Date of Examination:2014-12-12
Date of issue:2015-11-30
Advisor:Prof. Dr. Hilmar von Eynatten
Referee:Prof. Dr. Volker Thiel
Referee:Prof. Dr. Bent T. Hansen
Referee:Dr. István Dunkl
Persistent Address: http://dx.doi.org/10.53846/goediss-5400

 

 

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Abstract

English

Cenozoic sediments in southern Peru are responses of a complex interaction of active geodynamics and sedimentation, which is conspicuous of the Central Andes tectonics. By combining multimethodic analysis on single grain heavy minerals, it is possible to constraint uplift and exhumation history of the sedimentary basin borders in southern Peru and explain consistently sedimentation processes. The results reveal that Cenozoic sediments in southern Peru are coarse-grained deltas deposited since ~30 Ma as consequence of simultaneous uplift of the Coastal Cordillera and Western Cordillera. 
Keywords: Sediment Provenance, Heavy Mineral Analysis, Southern Peru, Central Andes, Camana Formation

Other Languages

Los sedimentos de edad Cenozoico en el sur de Peru, son respuestas de una compleja interaccion de geodinamica activa y sedimentacion, de los cuales es conspicuo de la tectonica de los Andes Centrales. Mediante la combinacion de analisis multi-metodos en minerales pesados detriticos, es posible restringir la historia de levantamiento y exhumacion de los bordes de cuencas sedimentarias en el sur de Peru. Los resultados revelan que los sedimentos cenozoicos en el sur de Peru son deltas de grano grueso depositados desde hace 30 Ma, y son consecuencia de levantamientos simultaneos de la Cordillera de la Costa y la Cordillera Occidental.
Schlagwörter: Sediment Provenance, Heavy Mineral Analysis, Southern Peru, Central Andes, Camana Formation
 
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