%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Hermoza, W.
%A Brusset, S.
%A Baby, Patrice
%A Gil, W.
%A Roddaz, M.
%A Guerrero, N.
%A Bolanos, M.
%T The Huallaga foreland basin evolution : thrust propagation in a deltaic environment, northern Peruvian Andes
%D 2005
%L PAR00000447
%G ENG
%J Journal of South American Earth Sciences
%@ 0895-9811
%K deltaic and estuarine deposits ; eocene ; foreland basing ; Huallaga basin ; miocenc ; Peru ; petroleum systems ; sub Andean
%M ISI:000231583800003
%N 1
%P 21-34
%R 10.1016/j.jsames.2004.06.005
%U https://www.documentation.ird.fr/hor/PAR00000447
%V 19
%W Horizon (IRD)
%X The sub-Andean Huallaga basin is part of the modern retroforeland basin system of Peru. It corresponds to a thrust-and-fold belt superimposed on inverted and halokinetic structures and is characterized by Eocene-Pliocene, thick synorogenic series that have controlled the burial history of petroleum systems. Sedimentological analysis and a sequentially restored cross-section based on seismic data and new field studies show three sequences of synorogenic deposits. The Eocene (Lower Pozo member) developed in shoreface environments, when the basin morphology corresponded to a foresag depozone linked to an orogenic unloading period. The Middle Eocene sequence (Upper Pozo member) developed in shallow marine environments and recorded a change in Andean geodynamics and the retroforeland basin system. The basin morphology corresponded to a foredeep depozone linked to an orogenic loading period. This configuration remained until the Middle Miocene (Chambira Formation). The Middle Miocene-Pliocene sequence recorded the onset of the modern sub-Andean Huallaga basin that became it wedge-top depozone. Thrust propagation occurred in a deltaic environment, which evolved progressively to an alluvial system linked to the modern Amazon River. (c) 2005 Published by Elsevier Ltd.
%$ 064