In this report the present state of geophysical exploration of the perbakti-salak geothermal prospect (west java) is given. The report describes results of restivity surveys made during 1974 and 1975; most of the data obtained are presented in the form of resistivity maps, resistivity soundings and resistivity sections; none of the data have been pr…
Pengukuran magnet dilakukan didaerah Tulungagung bersamaan dengan penyelidikan gaya berat bersistem jawa. maksud penyelidikan ialah di dalam rangka penafsiran struktur geologi dan melokalisir kemungkinan terdapatnya endapan mineral dibawah permukaan .
When a certain area is to be developed economically, some investigations must be undertaken beforehand, such as the investigations on the geology, hidrogeology, engineering geology and the others including the sociology and the socio economic.
The eocene (Early Tertiery) coal deposits on The ombilin river in central sumatra have been discovered in 1868 by de greve,mapped in 1875 by verbeek and their extraction was begun in 1892 in the vicinity of sawahlunto.
The geological structure of Sumatra is mirorred on a small scale in the range of islands west of it. it is ummistakable that the tendency of the longitudinal chains of sumatra to subside to the SE is observable again on the long range of islands which lies paralel to sumatra in the SW, separated by a "longitudinal depression" which surpasses by widt…
Penyelidikan geolistrik dan geohidrologi telah dilakukan oleh Direktorat Geologi atas daerah Blitar Selatan untuk memenuhi permintaan penyelidikan air tanah di daerah ini sesuai dengan surat Bupati Kepala Daerah Blitar No.R.L.B. 023 i/09/I/1976, tanggal 28 januari 1976. Biaya penyelidikan dibebankan pada biaya PPM Eksplorasi Geofisika dan biaya peny…
The mapped area covers the sheets XXVIII, XXIX, XXXVIII and XXXIX of the topographycal map of south sumatra, scale 1:100.000. it can easily be reached by motor-car by the road from tanjoeng-karang to enggala, or by boat with the ships of the K.P.M via the Toelang bawang river to benggala.
Geological data concerning the area covered by this map sheet were not avallable before the beginning of the geological survey Verbex (1881,1) largely as alluvium and for a small part in the SW as marind diluvium, by hartman (1915,2)
thi sheet includes the topographic mapsheets 1:100.000 no. XVII, XVIII, XXIV, and XXV. previous data are given by verbeek (lit.8), ERB (3), Moerman (5) and Philippy (6,7)