Paleomagnetic record from glacial varves in Alto Río Mayo, Patagonia, Argentina

• Language: unknown
• Published: 1990
• Subjects: glacial varve; palaeomagnetism; Quaternary; virtual geomagnetic pole; Argentina; Patagonia; Alto Rio Mayo valley; Canada; Greenland; Geomagnetic Pole; Siberia
• Online Access: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319201_v61_n3-4_p230_Sylwan; https://hdl.handle.net/20.500.12110/paper_00319201_v61_n3-4_p230_Sylwan

Paleomagnetic study of a 3-m thick sequence containing 302 glacial varves outcropping in Alto Rio Mayo valley shows strong intensities, a declination shifting gradually to the west and an increasing negative inclination. Virtual geomagnetic pole positions reveal a migration of the geomagnetic pole from NE Canada-SW Greenland to a position around NW Siberia. The deposit is believed to represent the interval between the recession of the last glacial maximum and a final ice front oscillation, with a readvance in the Alto Río Mayo valley thought to have occurred shortly before 13 500 yr B.P. © 1990.