USGS Central Region Energy Resources Team

Compiled by
Douglas W. Steinshouer, Jin Qiang, Peter J. McCabe, and Robert T. Ryder

Open-File Report 97-470F

Plate 2: Southeast Asia:

This digitally compiled map is part of a worldwide series of maps on CD-ROM released by the U.S.Geological Survey‘s World Energy Project. The goal of the project is to assess the undiscovered, technically recoverable oil and gas resources of the world. For data management purposes, the world is divided into eight regions based on political boundaries and corresponding approximately to the economic regions of the world as defined by the U.S. Department of State. This map covers the central part of the Asia Pacific Region (Region 3) and includes Brunei, Cambodia, Indonesia, Laos, Malaysia, Papua New Guinea, Philippines, Singapore, Solomon Islands, Thailand and Vietnam, and parts of The People‘s Republic of China. Two additional maps of the Asia Pacific Region cover the Far East (Plate 1) to the north and Australia and New Zealand (Plate 3) to the south.

The region is divided into geologic provinces. Each province has a set of geologic characteristics that distinguish it from sur rounding provinces.  These characteristics may include the predominant lithologies, the age of the strata, and the structural style. Some provinces include multiple genetically-related basins. Klett and others (1997) list all the provinces identified by the World Energy Project and rank them by known petroleum volumes. Offshore boundaries are defined by the 2000 meter bathymetric contour. Each province is assigned a unique number. Because geologic trends are independent of political boundaries, some provinces overlap two regions and two or more countries. Those provinces that lie entirely within the Asia Pacific Region begin with the number 3. Those provinces that lie partly within the South Asia Region may start with the number 8.

Details of the data sources and map compilations are given in the metadata file on the CD-ROM. The geologic outcrops on this map are based primarily on the Geological Map of South and East Asia by Ghose and others, 1990, and on the Geological Map of the World: Australia and Oceania by the Bureau of Mineral Resources (now Australian Geological Survey Organisation), 1965 and 1967. Some stratigraphic units are combined to simplify the map and to ensure consistency across the region. All rocks are colored by age. Sedimentary and metamorphic rocks are not differentiated, whereas igneous rocks and their types are indicated by patterns superimposed on the appropriate age color. The centerpoints of oil and gas fields are plotted based on the locations in the Petroconsultants database (1996) and are used with permission.

This map is compiled using Environmental Systems Research Institute Inc. (ESRI) ARC/INFO software. Political boundaries and cartographic representation on this map are taken, with permission, from ESRI (1992), they have no political significance and are displayed as general reference only. Portions of this database covering the coastlines and country boundaries contain intellectual property of Environmental Systems Research Institute, Inc. (ESRI)

Copyright (c)1992 and 1996, Environmental Systems Research Institute, Inc. All rights reserved.

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 U. S. Geological Survey Open-File Report 97-470F