The Great Tolbachik Fissure Eruption Geological and Geophysical Data 1975-1976

About this book

In 1975-1976 a remarkable volcanic eruption took place on the Kamchtka peninsula, part of the Soviet Union's arc of active volcanoes. Dr Fedotov and his colleagues studied the largest basaltic eruption in history, one of the most important volcanic events in the twentieth century. During this prolonged eruption they carried out extensive seismological, geophysical, geodetic and geochemical investigations. The results of this detailed and thorough investigation were collected as a series of papers under the editorship of S. A. Fedotov and collected into this volume, which was originally published by Cambridge in 1983. The result is a classic descriptive work of a major volcanic eruption.

Contents

Acronyms and abbreviations used in this book; Preface; 1. The Kamchatka Volcanological Station and its part in the development of Soviet volcanology; Part I. Description of the Eruption, Geological and Geochemical Data: 2. Chronology and features of the Southern Breakthrough of the Great Tolbachik Fissure Eruption 1975-1976; 3. Calculation of the magma discharge, growth in the height of the cone and dimensions of the feeder channel of Crater I in the Great Tolbachik Fissure Eruption, July 1975; 4. Activity of the Ploskiy Tolbachik volcano, June-July 1975; 5. The quantity, distribution and petrochemical features of pyroclastics of the Great Tolbachik Fissure Eruption; 6. Features of pyroclastics of the Northern Breakthrough of the Great Tolbachik Fissure Eruption and the origin of its pale-grey ash; 7. Basement xenoliths in the eruption products of the New Tolbachik Volcanoes and the problem of the formation of magma conduits in the upper crust; 8. Age divisions of the Holocene volcanic formations of the Tolbachik Valley; 9. Geology and petrochemistry of the Tolbachik regional zone of cinder cones; 10. Geochemical features of the rocks of the great Tolbachik Fissure Eruption 1975-1976 in relation to petrogenesis; 11. First results of a study of ore minerals in eruption products of the Southern Breakthrough of the Great Tolbachik Fissure Eruption; 12. Gases from the basalt flows of the Tolbachik Fissure Eruption 1975-1976; 13. Chemistry, metal content and reaction products of gases from the New Tolbachik Volcanoes of 1975; 14. The influence of volcanic eruption on the chemical composition of surface and underground waters. (As in the eruption area of the Tolbachik volcanoes, Kamchatka); Part II. Geophysical Studies: 15. The development of the Great Tolbachik Fissure Eruption in 1975 from seismological data; 16. Volcanic tremor during the Great Tolbachik Fissure Eruption in 1975; 17. A study of volcanic tremor during the Tolbachik eruption; 18. The influence of the 19-year tidal cycle on large-scale eruptions and earthquakes in Kamchatka, and their long-term prediction; 19. The focal mechanism and dynamic parameters of volcanic earthquakes preceding the Great Tolbachik Fissure Eruption of 1975; 20. Atmospheric shock waves accompanying the Great Tolbachik Fissure Eruption (September, 1975); 21. Deformations of the Earth's surface in the vicinity of the New Tolbachik Volcanoes (1975-1976); 22. Analysis of the methods and results of geodetic studies in the Tolbachik geodynamic polygon, 1975-1976; 23. Tilt of the Earth's surface during the formation of Cone II of the Great Tolbachik Fissure Eruption in 1975; 24. Changes in height, volume and shape of the New Tolbachik Volcanoes of the Northern Breakthrough; 25. The structure of the New Tolbachik Volcanoes from seismic data; 26. Study of volcanic tremor in the area of the Tolbachik eruption, using seismic instrumentation.

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