Open AccessThe Rosebel gold mining district (Trans-Amazonian belt, Suriname), a new structural framework
Author(s) -
Denis Gapais,
Gilian Alimoenadi,
Nicole Balraadjsing,
Benoît Poupeau
Publication year - 2021
Publication title -
bulletin de la société géologique de france
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.584
H-Index - 53
eISSN - 1777-5817
pISSN - 0037-9409
DOI - 10.1051/bsgf/2021021
Subject(s) - lineation , geology , amazonian , tectonics , seismology , lithosphere , flattening , cleavage (geology) , clockwise , fold (higher order function) , amazon rainforest , paleontology , mechanical engineering , ecology , biology , fracture (geology) , engineering , composite material , materials science
The Rosebel gold district belongs to the Paleoproterozoic Trans-Amazonian belt associated with sub-meridian crustal shortening. Here, we present new structural observations (cleavage, stretching lineations, veins, fault slip data, aeromagnetic map). The regional cleavage is steeply dipping and bears a steeply plunging stretching lineation. Finite strains are of flattening type. Fault slip data reveal a complex deformation history. The overall strain pattern in the area reflects vertical motions, a feature consistent with pop-down tectonics involving vertical stretch and burial of supracrustal deposits during horizontal shortening of a hot and weak continental lithosphere.