rhythmite Argentina 10 Neuquen Basin 6 Tithonian 6 Andes 4 Croton ovalifolius 4 Cyclicity 4 Ecuador 4 Galapagos Islands 4 Geochemistry 4 Jachal River 4 Jurassic 4 Jáchal river 4 Limestone 4 Ordovician 4 Palaeozoic 4 Paleozoic 4 Precordillera 4 Rhytmite 4 Sierra Negra 4 South America 4 Stable isotopes 4 Structure 4 Upper Jurassic 4 conglomerate 4 cyclic sedimentation 4 deformation 4 depositional environment 4 headwater 4 limestone 4