The eruption of deep-seated xenoliths in basaltic, alnoitic, kimberlitic, etc volcanoes provides the geologist with an important direct means of examining the fragments of the earth's mantle and lower crust. Xenolith studies provide information on the composition of the earth's outer layers and its regional variation; the nature of the crust/mantle boundary; the evolution of the upper mantle and the role of crustal recycling and metasomatism; the tectonic control of igneous activity, and in particular that which erupts diamonds to the surface. Contains contributions from over seventy authors, who describe the occurrence of mantle xenolith bearing volcanoes from around the world. These are organised by region and tectonic plate and these descriptions form the first half of the book. The second half is composed of contributions relating to the studies of xenolithic material and their physical and chemical properties.
