Analysing Magnetic Components of Samples from Svalbard

Three core specimens from a Triassic interval in Core LYB_CO2_DH4 were oriented palaeomagnetically and a primary Triassic reverse direction determined corresponding to the early Carnian. The magnetic mineral is High-Titanium magnetite indicating the Siberian region LIP rocks as source area. A Cretaceous pTRM is present, which is caused by a thermal event with increased temperature of 250-300C in Early Cretaceous or Late Jurassic. Three oriented outcrop samples from the Cretaceous Albian were also analysed. They did not contain any pTRM and it was thus concluded that the pTRM in the Triassic core is pre-Albian.