Email: Alasdair.Skelton@geo.su.se
Website URL: http://www.geo.su.se

Geology is all about rock and soil . Which rocks do we know ? What is a rock ? Why nearly all rocks are covered by a thin soil cover ? The formation of rocks and soils ? The Earth’s oceans and continents are constantly
changing , if you think in geological time periods . The oldest known rocks determines the scope of geological time , which is about four thousand million years. Currently we live in a geological instant. It is an important moment for
us humans , because such fits all the prerequisites for life . We are therefore
researchers in Geology.