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The Azores archipelago consists of nine islands that emerge from the Azores Plateau in the Central Northern Atlantic, situated within the triple junction of the American, Eurasian and African lithosphere plates. Subaerial volcanic activity has been well known since the Pliocene and continues today, with several well-documented eruptions since the settlement of the islands in the fifteenth century. The origin of the Azores Plateau has been a matter of scientific debate and thus this book provides the first comprehensive overview of geological features in the Azores from volcanological, geochemical, petrological, paleontological, structural and hydrological perspectives
Volcanoes are essential elements in the delicate global balance of elemental forces that govern both the dynamic evolution of the Earth and the nature of Life itself. Without volcanic activity, life as we know it would not exist on our planet. Although beautiful to behold, volcanoes are also potentially destructive, and understanding their nature is critical to prevent major loss of life in the future. Richly illustrated with over 300 original color photographs and diagrams the book is written in an informal manner, with minimum use of jargon, and relies heavily on first-person, eye-witness accounts of eruptive activity at both "red" (effusive) and "grey" (explosive) volcanoes to illustrate the full spectrum of volcanic processes and their products. Decades of teaching in university classrooms and fieldwork on active volcanoes throughout the world have provided the authors with unique experiences that they have distilled into a highly readable textbook of lasting value. Questions for Thought, Study, and Discussion, Suggestions for Further Reading, and a comprehensive list of source references make this work a major resource for further study of volcanology. Volcanoes maintains three core foci: Global perspectives explain volcanoes in terms of their tectonic positions on Earth and their roles in earth history Environmental perspectives describe the essential role of volcanism in the moderation of terrestrial climate and atmosphere Humanitarian perspectives discuss the major influences of volcanoes on human societies. This latter is especially important as resource scarcities and environmental issues loom over our world, and as increasing numbers of people are threatened by volcanic hazards Readership Volcanologists, advanced undergraduate, and graduate students in earth science and related degree courses, and volcano enthusiasts worldwide. A companion website is also available for this title at www.wiley.com/go/lockwood/volcanoes
This volume examines the impact of and responses to historic earthquakes and volcanic eruptions in the Azores. Study is placed in the contexts of: the history and geography of this fascinating archipelago; progress being made in predicting future events and policies of disaster risk reduction. This is the only volume to consider the earthquake and volcanic histories of the Azores across the whole archipelago and is based, not only on contemporary published research, but also on the detailed study of archival source materials. The authors seek to show how extreme environmental events, as expressed through eruptions, earthquakes and related processes operating in the past may be considered using both complementary scientific and social scientific perspectives in order to reveal the ways in which Azorean society has been shaped by both an isolated location in the middle of the Atlantic Ocean and the ever present threat of environmental uncertainty. Chapter 2, which analyses in depth the geology and tectonics of the islands is of more specialist interest, but technical terms are fully explained so as to widen the accessibility of this material. The audience for this volume includes all those who are interested in the geology, geography, history and hazard responses in the Azores. It is written, not just for the educated general reader, but for the specialist earth scientist and hazard researcher.