RT Journal Article
T1 Tectonic and geomorphic controls on the fluvial styles of theEslida Formation, Middle Triassic, Eastern Spain
A1 Arche, Alfredo
A1 López Gómez, José
AB The Eslida Fm is an alluvial unit of the Buntsandstein Facies of the Iberian Ranges deposited in a half-grabenbasin over a period of 2–2.5 Ma during the lower Anisian (Middle Triassic). It can be subdivided into six cycles thatcan be correlated along the basin. The overall architecture and cyclicity were controlled by the episodic activity ofthe basin boundary fault. Two proximal source areas of minor importance and a distal one of major importance areidentified. The petrological composition of the sandstones is arkosic to subgrauwackic, indicating source areascontaining both low-metamorphic rocks and gneiss, and granitic rocks. Alluvial fans, very common in rift basins,were not developed because of slow fault scarp retreat and the lack of large antecedent rivers cutting across the riftshoulders. Paleocurrents point to the SE, except for a zone in the middle part of the basin where interference with aNE–SW fault system deflected the channels to the S. The infilling of the basin is asymmetric in a transverse section,with channel facies near the basin boundary fault to the NE and overbank facies in the distal SW part.
PB Elsevier Science B.V
SN 0040-1951
YR 1999
FD 1999
LK https://hdl.handle.net/20.500.14352/57801
UL https://hdl.handle.net/20.500.14352/57801
LA eng
DS Docta Complutense
RD 17 abr 2025