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Inicio  /  Geosciences  /  Vol: 8 Núm: 5 Par: May (2018)  /  Artículo
ARTÍCULO
TITULO

Mass Balance of Cenozoic Andes-Amazon Source to Sink System?Marañón Basin, Peru

Gérôme Calvès    
Ysabel Calderón    
Christian Hurtado Enriquez    
Stéphane Brusset    
William Santini and Patrice Baby    

Resumen

We investigate the mass balance of the Cenozoic Andes-Amazon source to sink system using rock uplift proxies and solid sedimentation of the Marañón Basin in Peru. The evolution of sedimentation rates is calibrated with regional structural restored cross-section. The quantification of eroded sediments from reliefs to sedimentary basin is achieved with ×10 Myr resolution and compared to present day proxies from the HYBAM (HYdrologie et Biogéochimie du Bassin Amazonien) Critical Zone Observatory. Erosion of the early Andean landforms started during the Upper Mesozoic period, but sediment rates significantly increase during the Neogene. This is in agreement with the calibrated increase of rock uplift in the Andean orogenic belt.

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