Palaeomagnetism of Suriname dolerites

Permo-Triassic and Precambrian dolerites have been collected for palaeomagnetic research in Suriname (South America) at 24 sites (280 oriented cores). After A.F. or thermal demagnetization, consistent directions were obtained for the following groups: Permo-Triassic (227 × 10⁶ y), 10 sites, 90 samples, D = 358°, I = −7°, pole 82° S, 40° W; Precambrian (around 1.550−1.650 × × 10⁹ y), 2 sites, 17 samples, D = 277°, I = +35°, pole position 8° S, 53° E; Precambrian (about 1.750 × 10⁹ y), 2 sites, 30 samples, D = 314°, I = +3°, pole 44° S, 30° E. Precambrian pole positions for South America, Africa, North America and Europe are discussed.