The purpose of this report is to indicate the exixtence of a phreato-magnetic volcanic center in the densely populated area south of Cirebon city. On July 6 and July 29, 1988, I examined the geology of the area near the reservoir (waduk) Setu Patok , located 8 km south of Cirebon city (Figure 1) [108 degrees, 47', 10" S; topographic map, 1966 series, sheet 4722 IV, Tjirebon].
Mt. Kelut is an active andesite volcano in East Java, Indonesia, part of the Sunda arc, lying within a volcanic belt that is about 150 km above the north-dipping Benioff zone, where the Indian Ocean plate is being subducted beneath Java.
After eigthy five years of inactivity, the Colo Volcano (Indonesia, 0.175, 120.61E) experienced a series of violent eruptions which lasted from july 8 to August 22.. 1983. These eruptions destroyed most of the settlements, vegetation and animal life on the small island of Una-Una on which the volcano is located. The inhabitants were fortunately evacuated before the most destructive events took …
Volcanoes are unquestionably one of the most spectacular and awe inspiring features of the physical world, and they have provided humanity with the most exquisite pleasure as well as the most devastating misfortune. The loftiest mountains on the face of the earth, affording majestic scenery enjoyed by millions, are volcanic cones.
This book will interest not only geologists and students of volcanoes, but all those also who have a lively interest in landforms as natural phenomena. Dr. Cotton’s emphasis is on the study of volcanoes as landscape forms, beginning with the mechanism of volcanism – the types of eruption and the various kinds of volcanoes and proceeding with a discussion of the several types of landscape wh…
Viewing an erupting volcano is a memorable experience, one that has inspired fear, superstition, worship, curiosity and fascination throughout the history of mankind. In modern times, volcanic phenomena have attracted intense scientific interest, because they provide the key to understanding processes that have created and shaped more than 80 percent of the Earth’s surface.
On May 18, 1980 after 2 months of local earthquakes and steam eruptions, picturesque Mount St. Helens, a Cascade Range volcano is southwestern Washington, suddenly began a major explosive eruption directed first northward and then upward. The lateral blast, which lasted only the first few minutes of a 9 hour continuous eruption, devastated more than 150 square miles of forest and recreation are…
Volcanic activity is one of the main agents responsible for shaping the landscape, environment and climate of planets and moons. On Earth, volcanic eruption can also have catastrophic consequences for human society.
In the later summer, 1981, the international symposium on “Arc Volcanism” was held in Tokyo and Hakone under the sponsorship of the volcanological society of Japan and the International Association of volcanology and chemistry of the Earth’s Interior (IAVCEI). More than 400 scientists attended the symposium and about 220 papers were read during the main session from August 31 through Sep…
This study was conducted in a joint project on physical volcanology between Gadjah Mada University Yogyakarta, Indonesia and the Institute of Geophysics, University of Stuttgart, Federal Republic of Germany.