The Krakatau complex situated in the Sunda Strait, as a part of the Lampung Province (105°21'20" - 105°27'44" E. Long/6°03'0 2, Lot.), consists of four islands: Rakata, Sortung, Panjang and Anak Krakatau. The bordering sides facing each other at Nakata, Sertung and Panjong show a steep morphology which forms the enlders wall, at none places revealing faults. The chronology of the volcanic…
To geologist, the field is where rocks or soils can be observed in place, and field geology consist of the methods used to examines and interpret structures and materials at the outcrop. Field studies are primary means of obtaining geologic knowledge. Some studies may be as simple as visiting a single outcrop or quarry, making notes and sketches on the relations between certain rocks, and colle…
It has long been realized that the mineral assemblages of igneous and metamorphic rocks may reflect the approach of a rock to chemical equilibrium during its formation. However progress in the application of chemical thermodynamics to geological systems has been hindered since the time of bowen and the other early physical-chemical petrologysts by the recurring quandary of the experimental geol…
Structural geology is the study of the architecture of the earth in so far as it is determined by earth movements. Tectonics and tectonic geology are term that are synonymous with structural geology. The Movements that affect solid rocks results from forces within the earth; they cause folds, joints, faults and cleavage.
The science of geology is concerned with the earth and the rocks of which it is composed, the processes by which they were formed during geological time, and the modelling of the earth’s surface in the past and at the present day. The earth is not a static body, but is constantly subject to changes both at its surface and at deeper levels.
Indonesia merupakan negara yang berada pada jalur Pasific Ring of Fire yang merupakan jalur rangkaian gunung api aktif di dunia. Salah satu Gunungapi yang terletak di provinsi Sumatera Utara adalah Gunungapi Sinabung.
Kegiatan pengumpulan data ditujukan untuk mengetahui/mengikuti perkembangan akhir kegiatan G. Colo dan perkembangan pemukiman setelah 13 tahun pulau itu kosong penduduk akibat letusan pada tahun 1989. Data yang terkumpul itu merupakan dasar untuk mempertimbangkan upaya penyelamatan penduduk dan harta bendanya melalui suatu mekanisme pengungsian yang relatif aman, mudah dan benar.
Berdasarkan berita bulan Januari 1996 bahwa G. Sakora di P. Una-una meletus (berita kawat terlampir) pada bula Februari 1996, Seksi Pengamatan Gunung api Sulawesi dan Maluku mengirimkan petugas untuk melakukan pengecekan di lapangan, ternyata berita tersebut tidak benar. Berita tersebut sesungguhnya bermula dari ketidaktahuan penduduk tentang gunung api. Seorang penduduk melihat asap di puncak …