Palaeomagnetism of cretaceous sediments from Misool, Northeastern Indonesia

Evolution of the boundary between the Philippine Sea Plate and Australia: palaeomagnetic evidence from eastern Indonesia

“…The formation latitude of 19 + 6°S for Coniacian-Santonian rocks indicated by the inclination data is closely similar to palaeolatitudes suggested for Upper Cretaceous rocks by palaeomagnetic studies of Misool (18.5°S; Wensink et al, 1989). The declination is also similar to those of Santonian rocks on Misool indicating counter-clockwise rotations.…”

“…14). This conclu- sion implies that at least some of the Australian continental crust in the region separated front Australia before the Late Cretaceous as suggested by Pigram et al (1985) and Wensink et al (1989). However, the similarity in palaeolatitudes is surprising if Sula and Misool rifted from very different sites on the Australian margin as Pigram et al have suggested.…”

“…Thrnpp et al considered there to have been no discernible motion between Misool and the Australia Plate after the magnetisation had been acquired. Wensink et al (1989) Data from the east arm of Sulawesi have recently been presented by Mubroto et al (1994). Lower Cretaceous cherts and Upper Cretaceous-lower Tertiary basalts indicate formation palaeolatitudes of ~ 20°S.…”