Lithostratigraphy of the Maligât and Hareøen Formations, West Greenland Basalt Group, on Hareøen and western Nûgssuaq

Abstract

The Early Tertiary lavas in West Greenland have been divided into three lithostratigraphical units by Hald & Pedersen (1975). They comprise from below the Vaigat Formation consisting of lavas and pillow breccias, mostly of tholeiitic olivine basaltic or picrite basaltic composition; the Maligât Formation dominated by plagioclase porphyritic, tholeiitic basalts, and the Hareøen Formation consisting of olivine porphyritic, transitional basalts. Apart from volcanic rocks the three formations contain several sequences of clastic sedimentary rocks.