Salah satu kegunaan obsidian-perlit adalah sebagai bahan baku pembuatan agregat ringan )light weight aggregates) yang kini sedang dibutuhkan pemerintah dalam rangka meningkatkan pembangunan rumah murah untuk rakyat. Selain itu, dengan adanya kemajuan teknologi, baik dalam metoda pemrosesannya maupun dalam penggunaanya, bahan galian industri akan semakin penting artinya.
Sebagai program lanjutan pemetaan geokimia bersistem Sumatera Bagian Utara (NSP), maka di Sumatera Bagian Selatan telah dilaksanakan penyelidikan geokimia regional pada Lembar KOTAAGUNG (1010) yang dilaksanakan pada. bulan September sampai Nopember 1991 dilakukan Sukmana dkk., (1991) bulan Januari sampai Maret 1992 Sukmana dkk, (1992) dan Djumsari dkk, (1992). Sejak tahun 1989…
In order to delineate areas of prospective for REE mineralizations in Indonesia, the geological setting of the parts of Indonesia were checked agains the REE mineralization models explained above, taking into consideration the results of former prospecting and explorations.The main prospective areas of Indonesia are those which on one hand conatin granitoid instrusions and on the other hand con…
Calcium carbonate deposit or limestone is a carbonate rock consisted predominantly of calcite and or aragonite minerals. Both of minerals have the same chemical composition but different in their crystallographic systems. Aragonlte occurs mostly as constituents of mod ern carbonate rocks, e.g. beachrock, reefrock and marine bioskeletals, as well as ancient calcium carbonate rocks or li…
Lokasi singkapan WR-2 terletak di hulu anak sungai yang diperkirakan bermuara ke Sungai Klabau. Lokasi tersebut dapat dicapai melalui jalan pemboran minyak yang dibuat oleh Pertamina, Asamera dan jalan desa dari Desa Bejubang menuju Dusun Pulau Alang (?) ke a rah selatan sejauh 6 km, dilanjutkan melalui jalan setapak sejauh kurang lebih 1,5 km. Kendaraan …
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.
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 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.
lmu Petrografi batubara sebetulnya telah dipelajaari sejak awal abad ke 20 yang dipelopori oleh Marie Stopes, (1919) dan Reinhardt Thiessen, (1920). Kedua nama ini telah memperkenalkan terminologi dan klasifikasi batubara yang sampai saat ini masih terpakai. Namun penclitian batubara secara petrografi baru dimulai sejak tahun 1930-an, dimana Marie Stopes, (1930) memp…
This book is a collection of Prof. Dr. John Ario Katili publications from various international journals about Indonesian tectonic and resources. The idea of producing this book was stated on the way to Islamic World Academic of Science Conference, Ankara, Turkey, 2006 when Prof. Dr. Ir. John Ario Katili showed his worries concerning the development of geology in Indonesia, mostly because there…