Paleomagnetic evidence for a pre-early Eocene (∼ 50 Ma) bending of the Patagonian orocline (Tierra del Fuego, Argentina): Paleogeographic and tectonic implications

• Main Author: Rossello, Eduardo Antonio
• Language: unknown
• Published: 2010
• Subjects: Drake Passage; Fuegian Andes; Magallanes belt; paleomagnetism; Patagonian orocline; tectonics; Anisotropy of magnetic susceptibility; Antarctica; Argentina; Early Miocene; Global climates; Iron sulphide; Lower bounds; Magnetic lineations; Marine clays; Orocline; Paleomagnetic evidence; Patagonia; Relative motion; Sampling site; South America; Strike-slip fault; Strike-slip fault systems; Tectonic implications; Clay minerals; Control theory; Geomagnetism; Glacial geology; Iron ores; Magnetic anisotropy; Magnetic susceptibility; Oxide minerals; Rotation; Structural geology; bending; Cretaceous-Tertiary boundary; deformation mechanism; displacement; Eocene; fold and thrust belt; iron sulfide; magnetite; orogeny; paleogeography; plate motion; Magallanes; Antarc*; Tierra del Fuego
• Online Access: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0012821X_v289_n1-2_p273_Maffione; https://hdl.handle.net/20.500.12110/paper_0012821X_v289_n1-2_p273_Maffione

The southernmost segment of the Andes of southern Patagonia and Tierra del Fuego forms a ∼ 700 km long orogenic re-entrant with an interlimb angle of ∼ 90° known as Patagonian orocline. No reliable paleomagnetic evidence has been gathered so far to assess whether this great orogenic bend is a primar...