Open AccessA palaeomagnetic study of lower Proterozoic granites from Western Kenya
Author(s) -
Patel J. P.,
Raja P. K. S.
Publication year - 1979
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.1979.tb01025.x
Subject(s) - geology , proterozoic , thermomagnetic convection , paleomagnetism , geochemistry , paleontology , natural remanent magnetization , remanence , geophysics , magnetization , tectonics , magnetic field , physics , quantum mechanics
Summary This paper reports a palaeomagnetic study of the lower Proterozoic granites, exposed in the western part of Kenya and dated at 2530 ± 50 Ma (λ Rb = 1.39 × 10 −11 yr −1 ). Ten sites out of 13 have yielded stable palaeomagnetic directions which are believed to be primary. Polished section and thermomagnetic analyses indicate titanomagnetite grains as the main carrier of the primary component of the natural remanence. The mean palaeomagnetic north pole is calculated at 210.7° E, 60.9° N with A 95 = 13.5°.