The Ancient Volcanoes of Great Britain, Volume 2 (of 2)

"The Ancient Volcanoes of Great Britain, Volume 2" by Archibald Geikie is a scientific publication written in the late 19th century. This volume focuses on the study of ancient volcanic activity, specifically detailing various volcanic formations across Great Britain, including the Carboniferous and Permian periods. Geikie's work serves as an extensive examination of the geological features and the historical context of volcanic formations in the region. At the start of this volume, Geikie introduces the geological landscape of the northern and central English regions, discussing the presence and characteristics of the Carboniferous volcanoes. He highlights key geological phenomena such as the Great Whin Sill, an extensive intrusive sheet of dolerite, and the Derbyshire toadstones, providing evidence of volcanic activity that shaped the region's landscape. The opening portion sets the stage for a detailed exploration of the complex relationships between different volcanic materials, their ages, and their interaction with surrounding sedimentary rocks, paving the way for further geological analyses.