RT Journal Article
T1 Peritidal cyclic sedimentation from La Manga Formation (Oxfordian),Neuquén Basin, Mendoza, Argentina
A1 Palma Durán, Ricardo
A1 Kietzmann, Diego A.
A1 Bressan, Graciela Susana
A1 Martín Chivelet, Javier
A1 López Gómez, José
A1 Farias, María E.
A1 Iglesias Llanos, María P.
AB The La Manga Formation consists of marine carbonates and represents most of the sedimentary record of the Callovian-Oxfordian in the Neuquén Basin. Three localities in the southern Mendoza province were studied and their cyclicity was determined by means of facies analysis and their vertical arrangement. Facies of inner ramp, that were deposited in extremely shallow-water environments with intermittent subaerial exposures have been broken down into shallow subtidal, and intertidalesupratidal environments. Shallow subtidal facies are arranged into decimetre scale upward-hallowing cycles composed of marls, laminated or massive mudstones or bioclastic wackestones and intraclastic wackestone-packstones. Intertidal-supratidal centimetre-scale cycles consist of an upward-shallowing succession of restricted facies, overlaid by horizontal or crinkle microbial laminites, flat pebble conglomerates or breccias beds. The defined cycles show a shallowing upward trend in which the evidence of relative sea-level lowering is accepted. The interpretation of Fischer plots allowed the recognition of changes in accommodation space.
PB Elsevier Science B.V., Amsterdam.
SN 0895-9811
YR 2013
FD 2013
LK https://hdl.handle.net/20.500.14352/42949
UL https://hdl.handle.net/20.500.14352/42949
LA eng
NO Consejo Nacional de Investigaciones Científicas y Técnicas- PIP- 0546 and UBACyT 01/ XC28.
DS Docta Complutense
RD 3 oct 2024