FN Archimer Export Format
PT J
TI Thermochronology and U‐Pb dating of detrital zircons from the Demerara Plateau (French Guiana‐Suriname ): implications for the provenance of the Early Cretaceous syn‐rift sedimentation
BT 
AF Girault, Igor
   Basile, Christophe
   Bernet, Matthias
   Paquette, Jean‐Louis
   Heuret, Arnauld
   Loncke, Lies
   Poetisi, Ewald
   Balvay, Mélanie
AS 1:1;2:1;3:1;4:2;5:3;6:4;7:5;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Université Grenoble Alpes ,Université Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre Grenoble ,France
   Université de Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, F‐63000 10 Clermont‐Ferrand ,France
   Université de Guyane ,Géosciences Montpellier Cayenne ,France
   Université de Perpignan, CEFREM (UMR 5110), Perpignan, France
   Anton de Kom University of Suriname ,Paramaribo, Suriname
C2 UNIV GRENOBLE ALPES, FRANCE
   UNIV CLERMONT AUVERGNE, FRANCE
   UNIV GUYANE, FRANCE
   UNIV PERPIGNAN, FRANCE
   UNIV SURINAME, SURINAME
IF 3.2
TC 0
UR https://archimer.ifremer.fr/doc/00819/93108/99588.pdf
   https://archimer.ifremer.fr/doc/00819/93108/99589.docx
LA English
DT Article
CR DRADEM
   GUYAPLAC
   IGUANES
BO Pourquoi pas ?
   L'Atalante
DE ;Demerara Plateau;provenance analysis;source-to-sink;thermochronology;transform margin
AB he provenance of Early Cretaceous sandstones dredged on the northern margin of the Demerara Plateau, offshore French Guiana and Suriname, reveals the sediment routing system that prevailed through the Equatorial Atlantic rifting. Fission-track analysis and U-Pb dating of 310 and 111 detrital zircons, respectively, have been performed. Microfacies analysis and inherited cooling ages suggest that the sandstones were deposited in shallow marine environments during the Early Cretaceous, before the Late Albian drowning of the marginal plateau. Most of the U-Pb zircon crystallisation ages are comprised between 700 and 600 Ma and attributed to the Pan-African-Brasiliano orogeny. Statistical and chronological evidences suggest that the zircon fission-track cooling ages were inherited from source material. Triassic peak ages (>50% of the population) are attributed to the early phase of Central Atlantic rifting. One sample records a cooling phase at ca. 170 Ma, presumably following volcanic hotspot activity and the opening of the Central Atlantic Ocean. Two other samples record the rapid exhumation of the French Guiana transform margin during the Equatorial Atlantic rifting (127 ± 11 and 106 ± 8 Ma). We propose a source-to-sink model in which the Pan-African-Brasiliano basement of the margin was eroded as a result of flexural uplift along the French Guiana margin, and the detrital material funnelled in the Cacipore graben sustained the Early Cretaceous syn-rift sedimentation on the marginal plateau. 
PY 2023
PD AUG
SO Basin Research
SN 0950-091X
PU Wiley
VL 35
IS 4
UT 000936723700001
BP 1386
EP 1406
DI 10.1111/bre.12758
ID 93108
ER

EF