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…
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…
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…
A method is developed whereby the well-top to well-bottom pressure differences in a discharging steam-well can be estimated graphically £roman output curve, provided the curve is known over the complete output range. These pressure differences can then be used, along with the equations governing transfer within the reservoir, to provide a bett…
Dari hasil analisis megaskopis 59 contoh serbuk bor, Sumur MT-2 trayek selubung 1 O" dan 8" lapangan panas bumi Mataloko, Flores, NIT dapat disimpulkan sbb: Lapisan batuan/ litologi Sumur MT-2, terdiri dari breksi tufa terubah, andesit piroksen terubah, andesit hornblende terubah dengan sisipan tipis bre…
Dari basil analisis megaskopis 59 contoh serbuk bor, Sumur MT-2 trayek selubung 1 O" dan 8" lapangan panas bumi Mataloko, Flores, NIT dapat disimpulkan sbb: Lapisan batuan/ litologi Sumur MT-2, terdiri dari breksi tufa terubah, andesit piroksen terubah, andesit hornblende terubah dengan sisipan tipis b…
Analysis of practicable revisio of GRDC quadrangle reports The purpose of publishing geological quadrangle reports to accompany the maps is to explain the entiie geology of the area represented by the ma quadrangle. This. involves explaining geological features represented on the map in greater detail than is possible on the map itself; pr…
Daerah penyelidikan merupakan jalur pegunungan bukit Barisan yang terletak di sebelah selatan dari Sungai utama A. Tripa termasuk Desa Ampa Kolak-Rampelam dengan ketinggian antara 830 m sampai 1150 m diatas permukaan laut. Umum nya daerah ini ditumbuhi pohon pinus, rumput-rumputan dan sebagian kecil tanaman tembakau pada punggung bukit yang tinggi. …
Secara umum geologi daerah prospeksi di kecamata Tanah siang dan sekitarnya kabupaten Murung paya didominisasi oleh batuan Vulkanik berupa lava indesit dan beraksi lufa serta terdapat batuan terobosan andesit horblende dan diorit indikasi mineralisasi logam terjadi pada batuan braksi bufa diorit dan umumnya pada bstuan lafa adnesit yang telah mengal…