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The AAPG/Datapages Combined Publications Database

Southeast Asia Petroleum Exploration Society (SEAPEX)

Abstract


Proceedings of the South East Asia Petroleum Exploration Society Volume V, 1980
Pages 63-70

Wrench vs. Compressional Structures with Application to Southeast Asia

James D. Lowell

Abstract

For differentiating between wrench and compressional structures in Southeast Asia, criteria are established to distinguish three basic structural types. These are: (1) wrench structures (basement-involved); (2) compressional structures (basement-involved); (3) compressional structures (detached).

Structures in northeast Java are interpreted as compressional in origin, taking the Kawengan oil fields as an example. The Pungut and Tandun oil fields in the Central Sumatra Basin are interpreted as wrench structures. Regional compression in Java and regional wrench deformation in Sumatra appear to be related to the change in orientation of the subduction zone marking the boundary between the East Indian Ocean and Asian plates.


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