RT Journal Article
T1 Mid-depth calcareous contourites in the latest Cretaceousof Caravaca (Subbetic Zone, SE Spain). Origin andpalaeohydrological significance
A1 Martín Chivelet, Javier
A1 Fregenal Martínez, María Antonia
A1 Chacón Pichaco, Beatriz
AB Deep marine carbonates of Late Campanian to Early Maastrichtian age that crop out in the Subbetic Zone near Caravaca (SESpain) contain a thick succession of dm-scale levels of calcareous contourites, alternating with fine-grained pelagites/hemipelagites. These contourites, characterised by an abundance and variety of traction structures, internal erosive surfaces andinverse and normal grading at various scales, were interpreted as having been deposited under the influence of relatively deepocean currents. Based on these contourites, a new facies model is proposed.The subsurface currents that generated the contourites of Caravaca were probably related to the broad circumglobal,equatorial current system, the strongest oceanic feature of Cretaceous times. These deposits were formed in the mid-depth(200–600 m), hemipelagic environments at the ancient southern margin of Iberia. This palaeogeographic setting wassusceptible to the effects of these currents because of its position close to the narrowest oceanic passage, through which thebroad equatorial current system flowed in the westernmost area of the Tethys Seaway. Regional uplift, related to the onset ofconvergence between Iberia and Africa, probably favoured the generation of the contourites during the Late Campanian to theEarly Maastrichtian.
PB Elsevier
SN 0037-0738
YR 2003
FD 2003
LK https://hdl.handle.net/20.500.14352/58319
UL https://hdl.handle.net/20.500.14352/58319
LA eng
DS Docta Complutense
RD 27 abr 2025