AMS-detection of inverse fabrics without AARM, in ophiolite dikes

"Inverse" fabric contributions from single-domain (SD) magnetite complicate interpretation of magmatic flow from anisotropy of magnetic susceptibility (AMS) in the S. Troodos ophiolite. dike swarm. Flow directions and magma c hamber dimensions may only be inferred correctly if magnetic fabrics corres pond to the orientation distribution (OD) of minerals. Magnetite shape-fabr ics were isolated by anisotropy of anhysteretic remanence (AARM) but AMS am biguously merges magnetite and silicate fabrics. However, with the retrospe ctive benefit of AARM, in this area, we recommend avoiding SD complications by excluding magnetite-rich samples for which the bulk low-field susceptib ility > 27,500 mu SI. Magma-flow was steeply upwards to the SW proximal to an axial magma chamber.