... Cenozoic deformation erosion Europe faults Floresta Formation folds Fondachelli Unit Italy kinematics Longi Taormina Unit Mandanici Unit Mediterranean region Mediterranean Sea Mela Unit metamorphic rocks metasedimentary rocks Neogene neotectonics oblique orientation Paleozoic...

...CHRISTOPHER M. BERRY; EDUARDO MOREL; JAIRO MOJICA; CARLOS VILLARROEL Abstract Plant fossils are described from the Cuche Formation, Eastern Cordillera, Colombia in the area of Floresta. Those identified as Colpodexylon cf. deatsii Banks and cf. Archaeopteris sp. suggest an earliest Late Devonian...

...Figure 4 — Nanopsis coquena n. sp., Upper Tremadoc, Cordillera Oriental, Argentina. 1–4, 7–9 : Upper Member of the Coquena Formation, Quebrada Chalala section; 5, 6, 10 : Floresta Formation, Abra Santa Laura section. 1 , Paratype CORD-MP 11178, shell of left valve, lateral view; 2, 3 , CORD...

.... In this context, uplifted basin fill in intermontane regions of the Eastern Cordillera (e.g., Floresta basin; Fig. 2 ) may have provided recycled sediment to the Llanos basin. The new source could be explained by exposure and recycling of the Oligocene–Lower Miocene Carbonera Formation. In this case, the up...

...Rafael Rodrigues de Assis; Roberto Perez Xavier; Robert A. Creaser Abstract The Alta Floresta gold province consists of Paleoproterozoic (2.0–1.75 Ga) plutonic-volcanic sequences that originated from successive magmatic arcs accreted to the central Amazon tectonic province in the southwestern...

... on the distribution of the pre-Cretaceous formations in Colombia. The basement rocks of the Macarena are briefly described. Cambro-Ordovician graptolite and trilobite faunules were found in the Macarenas and near Colombia, a small village about 80 kilometers northeast of Neiva. On the Colombian side of the Sierra de...

... and Schellwienella goldringi , have been recorded from the Devonian La Floresta strata of Colombia and the Devonian strata exposed in the Río Cachiri area of northwestern Venezuela. The age of the Remolino formation is unquestionably Devonian and probably lower Middle Devonian, about equivalent to the Marcellus...

... and Teófilo Ramirez in 1935, are believed by Kenneth E. Caster (3) to have a boreal aspect and to be of Onondagan (lower Devonian) age. It seems possible that this formation was mistaken for Tertiary by Robert E. King (2) who reported a fenster in a flat overthrust at Floresta. The writer saw no clear...

...Figure 2. Zircon U-Pb and (U-Th)/He ages for Cenozoic strata exposed in the Floresta basin. Scatter plots show the double-dated zircon U-Pb and ZHe data for each formation. Probability density functions include all (double dated and randomly selected) zircon U-Pb and ZHe ages. Rel. Prob.—relative...

... Devonian Cuche Formation (which overlies the Lower to Middle Devonian El Tibet and Floresta formations) and the Carboniferous Capas Rojas del Valle del Guatiquia Formation ( Fig. 2 ). Various marine fossils, notably vertebrate fossils, constrain the ages of these units ( Mojica and Villarroel, 1984...

... (<15 Ma) fission-track ages is affected by a post–Stilo-Capo d'Orlando Formation deposition thermal event. 1—alluvial deposits and marine marly clays; 2—volcanic rocks; 3—Serravallian-Messinian siliciclastic deposits; 4—Calcareniti di Floresta; 5—Antisicilide unit; 6—Stilo-Capo d'Orlando Formation; 7...

.... These basement rocks are overlain inland in the south of Brazil by younger rocks ranging from Devonian to Cenozoic and the coast by the sedimentary Barreiras Formation and younger alluvials. The Brazilian basement is separated from the Guianan basement by the Amazon Basin that is occupied by sediments. The size...