Pada umumnya gunung api di Indonesia menghasilkan batuan calcalkali dari tipe magma pasifik dan hanya beberapa saja yang menghasilkan magma Mediateran misalnya seperti G. Tambora (1815) menghasilkan magma Mediteran
Kegiatan kembali ("opleving") magmatik G. Agung pada tgl. 27 Djanuari 1964, merupakan letusan2 miniatur tjorak volkanion ("vulcanina type eruption"), dengan asap2 kelabu hohitam-hitoman bergumpal-gumpal serupa kol kembang dan mentjapai ketinggian maksimal k.l. 4000 m. diatas puntjaknja. Gedjala ini ternjata merupakan detik2 penghabisan dari roda kegiatan volkaniknja sedjak tgl. 16 Februari 1963.
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].
The spectacle of explosive volcanic activity has always struck us with a sense of fascination and awe. Stories of the last days of Pompeii and Herculaneum, the massive eruption of Krakatau, and more recently the destruction wrought by Mount St. Helens in Washington and El Chinchon in Mexico have captured the public imagination. This atlas examines the aftermath of such events by looking at the …
Fundamentals of physical Volcanology is a comprehensive overview of the processes that control when and how volcanoes erupt. Understanding these processes involves bringing together ideas from a number of disciplines, including branches of geology, such as petrology and geochemistry; and aspects of physics, such as fluid dynamics and thermodynamics.
The eminent volcanologist T.A. Jaggar in no way exaggerated the significance of volcanic phenomena when je stated that his conception of volcanicity was of a process which is everywhere at work within and beneath the earth’s crust. Today there are more than 500 volcanoes which are still active or at which activity has been recorded during historic times, while the number of extinct volcanoes,…
The eminent volcanologist T.A. Jaggar in no way exaggerated the significance of volcanic phenomena when je stated that his conception of volcanicity was of a process which is everywhere at work within and beneath the earth’s crust. Today there are more than 500 volcanoes which are still active or at which activity has been recorded during historic times, while the number of extinct volcanoes,…
The past 25 years have been vast expansion in the field of igneous petrology to accommodate a wide range of new information from both the Earth and other terrestrial planets. This has made the subject far more interesting, but has also resulted in a marked increase in both the amount and the degree of specialization of the available literature.
PVMBG merupakan salah satu institusi yang khusus bergerak di bidang gunung api, gempa bumi, tsunami, gerakan tanah, erosi dan sedimentasi. Di dunia internasional PVMBG dikenal dengan sebutan Volcanologi Survey of Indonesia (VSI). Di erah digital ini PVMBG mengembangkan multiplatform bernama MAGMA Indonesia. MAGMA Indonesia (Multiplatform Application for Geohazard Mitigation and Assesesment in I…
Gunung api Gamalama merupakan Gunung api strato dengan tinggi puncak 1715 meter dan berada pada zona penujaman celah Sangir-Halmahera. wilayah ini merupakan zona penujaman yang cukup aktif yang dikenal dengan Punggungan Mayu.