@article{Tshwenyego:2026:10.1016/j.jafrearsci.2025.105954,
author = {Tshwenyego, K and King, J and Muxworthy, A and Qi, L},
doi = {10.1016/j.jafrearsci.2025.105954},
journal = {Journal of African Earth Sciences},
title = {Palaeomagnetic investigation of Palaeoproterozoic dykes from Botswana},
url = {http://dx.doi.org/10.1016/j.jafrearsci.2025.105954},
volume = {236},
year = {2026}
}

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TY  - JOUR
AB  - The geomagnetic field including its intensity is poorly constrained during the Proterozoic era (2500 to 541 Ma). Understanding geomagnetic field behaviour during this long-time interval is key to understand the evolution of the Earth including dating the age of the Earth’s inner core nucleation. Palaeointensity experiments suggest low magnetic field intensities during the Palaeoproterozoic era between (2500 to 1500 Ma). To address this issue, we present palaeodirectional and palaeointensity results conducted on three previously dated Palaeoproterozoic localities in Botswana: 1) the Moshaneng Complex gabbros (2054 ± 2 Ma), 2) the Moshaneng dolerite dykes (1927 ± 1.5 Ma), and 3) the Pilanesberg dolerite dykes (1347 ± 97 Ma). Virtual geomagnetic poles were obtained from all three localities. Only the Moshaneng dolerite dyke yielded a virtual dipole moment (VDM) of 2.4 ± 0.4 × 1022Am2 from the three studied sites, which is consistent with a dipole low during the Palaeoproterozoic era. The results show that during the Palaeoproterozoic era, there was low VDM recorded which is similar to other values obtained in similarly aged Palaeoproterozoic studies.
AU  - Tshwenyego,K
AU  - King,J
AU  - Muxworthy,A
AU  - Qi,L
DO  - 10.1016/j.jafrearsci.2025.105954
PY  - 2026///
SN  - 1464-343X
TI  - Palaeomagnetic investigation of Palaeoproterozoic dykes from Botswana
T2  - Journal of African Earth Sciences
UR  - http://dx.doi.org/10.1016/j.jafrearsci.2025.105954
VL  - 236
ER  - 

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