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The AAPG/Datapages Combined Publications Database

Southeast Asia Petroleum Exploration Society (SEAPEX)


Proceedings of the 2017 South East Asia Petroleum Exploration Society (SEAPEX) Conference, 2017
Page 7c

Neogene Tectonics of Northern Borneo: A Simple Model to Explain Complex Structures within Miocene-Recent Deltaic-deepwater Sediments both Onshore and Offshore

James Clark


The enigmatic “Circular Basins” of Eastern Sabah contain moderately deformed Neogene deltaic-shallow marine sediments preserved in synclinal outliers surrounded by older, often highly tectonised shales. This outcrop relationship is repeated across Northern Borneo (Fig. 1) and is the result of uplift and erosion of a detached, gravity-driven collapse system. It is not the product of multi-phase basement tectonics. The same thin-skinned gravity-driven processes are currently acting on the deltaic-deepwater basins that surround the northern Borneo hinterlands. The resulting offshore structures, well-imaged on 2D and 3D seismic, display similar geometries to the onshore and have the same mode of origin.

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