New palaeodirections and palaeointensity data from extensive profiles through the Ediacaran section of the Volyn Basalt Province (NW Ukraine)

SUMMARY Changes in the geomagnetic field over geologic timescales can be used to study evolution and processes of its sources Earth's deep interior. As a stark contrast behaviour recent past, late Neoproterozoic is defined by ambiguous polar wander paths, ultralow strengths period extreme reversal hyperactivity. Palaeointensity data from this time are still scarce conclusions made these suffer large uncertainties brought low sampling density. In study, we present new palaeomagnetic palaeointensity quarry outcrops five drill cores, covering longest most complete profiles through Ediacaran units Volyn Basalt Province (NW Ukraine) date. Palaeodirectional analysis thermal alternating demagnetization experiments reveals at least six reversals profile as well four palaeopoles that agree with previously published poles. Whole-rock estimates derived multimethod approach utilizes microwave Thellier performed using Coe IZZI protocols Wilson double-heating Shaw experiments. These produce instantaneous site-mean range 2.1 ± 0.4 11.1 3.5 µT virtual dipole moments 0.31 0.06 × 1022 1.67 0.53 A m2. Small-scale variations palaeointensities throughout not only show extremely weak around polarity changes but could also suggest strength never fully recovered between reversals. results increase density intensity coverage for Baltica Late and, combination moments, support an seems towards Ediacaran–Cambrian transition.