 Numerous pulses of magmatic intrusions, each of which might have led to a volcanic eruption, are required to explain the cyclic nature of the Kanichee layered intrusive complex.In the lower four magmatic series, masses of chromite, olivine and clinopyroxene develop rocks varying from dunite to clinopyroxenite.The fifth magmatic series comprise a similar suite of ultramafic rocks overlapped by olivine and quartz gabbros in which plagioclase, clinopyroxene and an iron-titanium oxide phase are the dominant minerals.