Mineral provinces and their connec-tions to phases of nountain building in Indonesia have been proposed by WESTERVELD (J. WESTERVELD,1952). Mineral deposits characterizing certain orogonic belt, are. grouped into one pr-ovfnco., The Malaya orogen (Lats-Jurassic) is charactarizcd by cassitorite bearing pegmatites and veins. Pyrouotasonatic iron an…
Menurut angka statistik tahun 1971 luas tanah pertanian di Indonesia ± 1,57 juta hektar atau ± 8,3% luas seluruh daratan Indonesia. Sepertiga luas tanah pertanian ini berupa tana~ pesawahan yang ditanami padi. Dari semula tanah pesawahan yang ditanami padi ini baru sepertiganya mendapaj, kan pengairan-teknik secara terus-menerus sepanjang tahu…
Penyelidikan endapan serpih bitumen untuk tahun anggaran 1980/1981 telah dilakukan di daerah Ombilin-Sawahlunto. Penelitian ini dimaksudkan sebagai kelanjutan proyek inventarisasi sumber daya energi serpih bitumen• di Sumatera.
Formasi Sangkarewang yang tersebar luas di daerah Talawi telah diselidikai secara mendetail. Lingkungan pengendapan ser…
Perlite is a glassy yolcanic roc~which 'fill upon rapid and controlled heating, expand or l:lpop" into a frothy material of low bulk density -valued as a ,lightweight aggregate. Occurrences and commercial• deposits of perli te are known throughout the world as well~exposed flows and domes of Tertiary and Quatern~ry age like most of ~he volcan…
During the early part of August until 7th 1 was in Bangka. We had Intended to leave on 3rd August, but the Garuda Flight scheduled for that day was cancelled, so i though it would be a good opportunity to view the terrain in Sumatera, and on 7th Agustust crossed by small boat to Palembang where we took a train to pandjang and crossed to djawa where …
In November 1974, on assignment of the "Directie Interna,tionale Technische Hulp11 (Ministry of Foreign Affairs) at The Hague, Dr. H. CRUIJS has joined RMRDC - Regional Mineral Resources Development Centre, recently created. by ESCAP - Economic and Social Commission for Asia and the Pacific at Bangkok. Under a bilateral arrangement between the H…
To this end an agreement was signed between the United Kingdom and the Republic of Indonesia for a five year Reconnaissance Geological and Geochemical mapping program which was carried out between 1975 and 1980 over the who Ie of Sumatra north of the Equator, an area of 190,00…