The continent of Europe, as a recognizable geographic entity, attained roughly its present shape around 20 million years ago. Even since then, the European coastline has undergone significant changes, due mainly to sea-level movements. This book relates how Europe has been assembled through geologic[...]
Our world is made of rock. Although much of the Earth's surface is covered by vegetation, concrete or water, if one digs down far enough solid rock will always be found. Those who live in a landscape where rock outcrops are obvious will have wondered about the kind of rocks they are looking at and h[...]