This section is list of currently available published geological and geochemical maps for Sumatera North of the equator. further information abput these maps is given in the geosurvey newsletter (berita geologi, Direktorat Jenderal Pertambangan Umum)
The area consists mainly of a sequence of clastic metasediments,limestones and metavolcanics known as the Geumpang Formation, Which forms part of the Woyla Group of late Jurassic to Early Cretaceous age.To the South-east this succession is cut by the Anu-Batee Fault, a major splay of the North Sumatra Fault System that strikes NW-SE down the axial l…
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17 Halaman,lampiran peta, tidak berwarna, cover bi
The Baso Granodiorite instrusion, which lies just north of the Sumatra fault zone in a remote part of Aceh Barat, has been the subject of a two-fold mineral exploration investigation. The instrusion and its environs were investigated as a potential source of gold and secondly there were a number of regional geochemical survey anomalies, particularly…
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33 Halaman, tidak bergambar, tidak berwarna, lampi
Geuteut is small village 55 km south of Banda Aceh on The West coast of Northern Sumatra At this locality the Miocene Geunteut Granodiorite intrudes Mesozoice rock of the woyla group. These form a westerly dipping series of metasediments and limestones that become increasingly calcareous upword
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125 Halaman, tidak berwarna, lampiran peta,cover b
A geochemical survey and mineral exploration of the Sigalala area has identified a middle Tertiary intrusive complex of altrered/weathered granodiorite with characteristics suggestive of Cu-Mo Porphyry style mineralisation
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27 Halaman, tidak berwarna, lampiran peta,cover bi
The Kr. Dusun basin area has been subjected to several previous investigations that have indicated the presence of porphyry-style mineralisation plus the occurrence of some lead-zinc drainage basin anomalies. In this investigation an area a altered granodiorite was surveyed by detailed drainage basin and rock sampling.
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58 halaman, tidak berwarna, lampiran peta, cover b
The Dusun Intrusive complex, which lies about 40 km southeast of lake tawar in a remote part of Aceh Tengah, has been the subject of a mineral investigation programme. Previous investigations in this area have revealed the presence of chalcopyrte, galena,sphalerite and molybdenite, with indicatations of both porphyry-style and vein mineralisation.…
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16 Halaman, lampiran peta, tidak berwarna,cover bi
Three low priority areas were investigated in the Takengon quadrangle because of their proximity to a more important area being studied. These areas-Panomon, Kebyaran and keuretu -were suggested as follow-up targets on the basis of geochemical anomalies found during the regional geochemical survey of the north Sumatra Project (NSP).
This section is a list of currently available published geological and geochemical maps for sumatra north of the equator. Further information aboit these maps is given in the geourvey Nesletter (berita geologi, Direktorat jeneral Pertambangan Umum), Volume 16, pages 105-107, May 1984
The North Sumatra Geochemical adn Mineral Exploration Project (NSGMEP) is a 4 year (1984-1988) mineral exploration programme being undertaken by a combined team of geologist seconded from the British Geological Survey (BGS) and Counterpart from the Directorate of Mineral Resources (DMR), Indonesia
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23 Halaman, tidak berwarna,lampiran peta, cover bi