Open AccessPalaeomagnetism of the Lisbon Volcanics
Author(s) -
Watkins N. D.,
Richardson A.
Publication year - 1968
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1968.tb00186.x
Subject(s) - paleomagnetism , volcanic rock , geology , clockwise , earth's magnetic field , peninsula , bay , volcano , paleontology , rotation (mathematics) , magnetic field , oceanography , geography , archaeology , geometry , physics , mathematics , quantum mechanics
Summary The natural remanent magnetism of the Eocene Lisbon Volcanics has been determined using 39 samples from 12 lavas. The virtual geomagnetic pole (207° E, 69° N, with dp = 7.7° and dm = 13.2°) is significantly different from the mean Eocene geomagnetic pole for Europe. This result is consistent with previous independent suggestions of the creation of the Bay of Biscay by anticlockwise rotation of the Iberian peninsula, and implies therefore that the rotation was in part Post‐Eocene. Alternatively, the Eocene geomagnetic field during the extrusion of the Lisbon Volcanics differed significantly from that recorded by other European Eocene rocks.