UPDATING OF INDONESIAN TERTIARY SEDIMENTARY BASIN

摘要

Since 1980 the number of Indonesian Sedimentary Basin which is officially announced by the government are 60 basins, but informally the variation is in range of less than 60 up to around 66 basins. Based on stratigraphic and tectonics conditions of some areas there are overlapping layers between Tertiary Sedimentary and Pre Tertiary Basin. Besides, as basic platform for research and development, regulation and policy are needed to update the number of basin periodically.In general the definition of a sedimentary basin is a region, part of the earth's crust where sedimentary strata have been deposited in relatively much greater thickness than its surrounding area. The nomenclature for basin is referred more on basinal areas. Based on sedimentary basin classification there are: Type of plate where basin exists, basin position in the plate margin, type of plate interaction, time development of basin and basins fill with respect to tectonic and shape of the basin.The study will update knowledge of the basin, it can also update previous knowledge because of the limitation of the data and the lack of new concept when the report was published, this is the case of the basin in Java, other example Pembuang formerly was considered as basin but now is a part of Barito Basin. Other promising case is that the change of status of several basins such as Banggai and Bone from exploratory basin to producing basin.Map of New Version of Indonesian Tertiary Sedimentary Basin (63 basins) could be used as a basic data for development of science and technology, to support government policy and investor, to improve and accelerate oil and gas exploration and production in Indonesia.