The geological structure of France goes back 2,000 million, which is the age of the oldest rocks known. After the Pre-Cambrian Orogeny, which is represented in the north of the Armorican Chain, the Caledonian and above all the ian Orogeny formed the crystalline and metamorphic ossature of the country. All that i…
Figure 3, modified from KRTA (1989), shows the Ulumbu geothermal area and its location relative to Ruteng, Heng, Ponggeok and W Kokor. As indiated earlier a reasonable • amount of surface scientificsurvey work has been completed. However, one of the technical philosophies. under…
An aapa mire was investigated peat geologically. Based on about 1500 volumentric peat samples, the depth, peat types, degree of decomposition (V. Post's methods), bulk density, water content and shear strength were examined along an 800 m transcet. The calorific value was determined from 58 respresentative peat samples from the same transect, as wel…
Metallogenetic concept on mineral deposits of Indonesia as proposed by WESTERVELD is reviewed.
Depsite its general validity and practical applicability, certain geological phenomena and mineral occurrences seem to contradict the concept and therefore revisions are suggested A Metallic mineral distribution map with a scale 1:5000.000 accompanies thi…
Fundamental questions of metallogenetic investigations are first donsidered. The difference betwen factors and indicators in metallogenetic analysis is discuss.Metallogenetic factors are geological phenomena which condition the formation of deposits.They are its cause.