Geology of Ascension Island other volcanic islands, which only have a few mafic and felsic endmembers such as basalt or rhyolite, Ascension has a full-range from some of the most mafic to most felsic. This includes basalt, hawaiite, mugearite, benmoreite,trachyte and rhyolite. Potassium-argon dating indicates that the oldest rocks exposed above the water are one million year old rhyolites. Geologists have divided the island's mafic and felsic rocks into different named sequences and sub-divided mafic rocks based on their ratio of zirconium and niobium. The Sister's Peak region in northwest Ascension has intermediate mafic lava flows, scoria cones and mafic ash fall deposits near
Substance 1987 the on-screen title is "Substance 1983–88") and different background colours are used; the Factory/Qwest release has a grey background, the Japanese VHS release, blue and the LaserDisc, turquoise. The video includes linking sequences which are animated to the accompaniment of instrumental sections from "The Happy One", an otherwise unreleased track from the "Technique" sessions. Substance 1987 Substance (also known as Substance 1987) is a compilation album by English alternative dance band New Order. It was released in August 1987 by Factory Records. The album compiles all of the band's singles at that point in their 12-inch versions, along with their