%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Roddaz, Martin
%A Brusset, Stéphane
%A Baby, Patrice
%A Hérail, Gérard
%T Miocene tidal-influenced sedimentation to continental Pliocene sedimentation in the forebulge-backbulge depozones of the Beni-Mamore foreland Basin (northern Bolivia)
%D 2006
%L fdi:010035673
%G ENG
%J Journal of South American Earth Sciences
%@ 0895-9811
%K Amazonian foreland Basin ; forebulge ; backbulge ; tidal deposits ; sequence stratigraphy ; Bolivia
%M CC:0002379664-0007
%N 4
%P 351-368
%R 10.1016/j.jsames.2005.11.004
%U https://www.documentation.ird.fr/hor/fdi:010035673
%> https://www.documentation.ird.fr/intranet/publi/2006/07/010035673.pdf
%V 20
%W Horizon (IRD)
%X Mio-Pliocene deposits of the forebulge-backbulge depozones of the Beni-Mamore foreland Basin indicate tidally to fluvially dominated sedimentation. Seven facies assemblages have been recognized: FAA-FAG. FAA represents a distal bottom lake assemblage, FAB and FAD are interpreted as tidal flat deposits, FAC and FAG are interpreted as fluvial systems, FAE sediments are deposited in a subtidal/shoreface setting, and FAG represents a meandering fluvial system. The identification of stratigraphic surfaces (SU, MFS, and MRS) and the relationship among the facies assemblages permit the characterization of several systems tracts: a falling-stage systems tract (FSST) followed by a lowstand systems tract (LST), a transgressive systems tract (TST), and a highstand systems tract (HST). The FSST and LST may have been controlled by the uplift of the Beni-Mamore forebulge, whereas TST may result from a quiescent stage in the forebulge. Subaerial unconformity two (SU2) records the passage from a tide-influenced depositional system to a fully continental depositional system. The Miocene tidal-influenced deposits in the Beni-Mamore Basin suggest that it experienced a connection, either with the South Atlantic Ocean or the Caribbean Sea or both. (c) 2006 Elsevier Ltd. All rights reserved.
%$ 064