Abstract
Abstract Data are presented from the Taavinunnanen gabbro massif in Lappland, Sweden. Olivine, augite, bronzite and plagioclase have been analysed. Samples have been taken from outcrops as well as from a 700 metres long core drilled vertically through the gabbro. It is concluded that the gabbro body is a composite, differentiated layered intrusion of lopolithic shape exhibiting cryptic as well as rhythmic layering. The original magma is suggested to be of tholeiitic composition.
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