Eastern view of Unzen Volcano in the Shimabara Peninsula, Kyushu, SW Japan. New lava domes with the thick apron of volcanic debris have formed near the summit of Mt. Fugen (1.359 m) since 20 May 1991. Rockfalls from the fronts of domes descended as pyroclastic flows along the Mizunashi River (straight toward readers) and Oshigadani Valley (curved in the clockwise direction).
Pulau Krakatau dinamakan orang juga Pulau Rakata. Penduduk Banten dan suku Sunda, terutama suku Sunda yang berdiam di wilayah Jawa Barat bagian barat, lebih banyak mempergunakan nama Rakata, namun suku-suku bangsa Indonesia lainnya lebih banyak mempergunakan nama Krakatau. Dalam “Encyclopedie” van Nederlandsch Indie” juga dikatakan, bahwa Pulau Krakatau disebut orang juga Pulau Rakata.
The change of seasons is most clearly distinguishable in the appearances of mountains. Councurrently with snow-melting, the yellowish green colored sprouts of plants attract our attention and tell us the advent of spring on mountains. And when the leaves change their colour from fresh green to dark green, we are informed that the rainy seasons is over and the summer is setting in.
Bahan galian industri adalah mineral industri dan batuan, yaitu semua bahan galian di luar mineral logam dan radioaktif yang mempunyai kegunaan langsung untuk berbagai industri. Menurut undang-undang dan peraturan yang berlaku ten tang penggolongan bahan galian (PP No. 27/1980), maka sebagian besar bahan galian industri termasuk bahan galian Golongan C. Secara geologi bahan g…
Geodynamics, the study of global movements and of the forces driving them, is a rekatively fresh offshoot from the vigorously branching tree of the earth sciences. Before the advent of Alfred Wegener on this scene in the early nineteen-hundreds, the idea of permanency in the distribution of continents and oceans was almost sacrosanct.
Das Antlitz der Erde, or “The Face of the Earth”, was the title of the first great magnum opus on the gross surface features of the earth by Eduard Suess late last century. A recent British television documentary with the same purpose bore the same title.
Batumulia dapat digolongkan dalam tiga bagian yakni; jenis batu permata (precious stones), setengah batu permata (semi precious stones ), dan jenis batu hias ( ornamental stones). Batumulia jenis batu permata adalah mineral yang mempunyai daya tarik yang terdapat di alam dan setelah dilakukan pemrosesan maka keindahannya semakin bertambah dari bentuk asalnya.Pada umumnya jenis batu permata …
rectangular area of 72,000 ha along the tidal reach of the Batanghari River, northeast of Jambi, Sumatra, has been proposed by the Indonesian government as one of the sites for developing a community to relieve the population pressure in other parts of Indonesia (see figure l). By year 2000, Hanson and Koesoebiono (1975) estimated that a population of perhaps 250 million people would requir…
The impetus for publishing this set of articles was the realization that, year after year. I and my students at Stanford were making copies (with varying degrees of legibility and legality) of the same classic articles on plate tectonics and geomagnetic reversals. At first we did this because there was so little material on the subject available.
The wavefields generated by strombolion activity are investigated using data from small-aperture (120-600 m) seismic arrays deployed on the north flank of Stromboli and data from seismic and pressure transducers set up near the summit crater.