Recent high-quality, satellite-derived, free-air gravity data and magnetic data compiled by the Geologic Survey of Japan are interpreted to provide a regional plate tectonic framework for planning hydrocarbon exploration including regional detail of rifts, depocenters, carbonate buildups and platforms, and major structures and accommodation zones; distribution of volcanics and depth to magnetic basement; as well as definition of oceanic fracture zones and their interaction with prospective continental margin areas. The study area is 100° to 120° East by 3° to 23° North, or about the same size as the entire Gulf of Mexico or North Sea.

Basins interpreted include Beibu Wan, Hoang Sa, Malay, Mekong, Nha Trang, Outer, Pearl River, Sabah, Sokang, Song Hong, Tarakan, Thai, West Natuna, and Yang Ghe. Other important regions interpreted include: Baram Delta, Luconia Platform, McClesfield Bank, Paracel Islands, Reed Bank, and Spratly Islands area.

In addition to interpretation maps, nine mega-regional modeled cross sections are used to support the interpretation. The presentation is interactive utilizing ArcView™ GIS software.

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