Pleistocene and recent studies of Waitemata Harbour

Abstract

The peninsula of North Shore is a spur of Tertiary sedimentary rocks (Waite-mata Formation) that has been subject to considerable marine erosion along1 its northern side. Deep excavation by an ancient Shoal Bay Stream, and its tributaries during glacial times divided the spur into blocks which became isolated by subsequent rise of sea-level. Two groups of volcanoes were active in Recent times and further modified the peninsula.