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

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 f...

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Bibliographic Details
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
Description
Summary: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.

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