Poland, the lakes and forests of Finland, the mountains of Norway, the dykes of Holland, the little hills of Belgium, and more recently the plain of Flanders. We have pictured ourselves administering first aid to the wounded, hot drinks to refugees, or just keeping cool under heavy fire ! But for most of us such portraits are drawn more from phantasy than from reality. Certainly we may do a lit...

or Real An important characteristic of maps is the fact that they represent selections from reality in an abstract way. Especially for presentation purposes, maps that look ‘empty’ might even work better than maps with an overloaded view. In an exploratory mode, an overloaded map could be very representative for the topic being studied, and via interactive selection and filtering techniques the...

Edwards (1942), in a broad chemical and mineralogical study of dolerites in Tasmania, found variations in composition within the sills and dykes examined. He attributed these chang>es to fractional crystallization and gravitative differentiation in the cooling magma of the sills, similar to that which is postulated to have occurred in the Skaergaard intrusion of East Greenland and the Palisade ...