M.T. Roberts, 1983. "Seismic Example of Complex Faulting From Northwest Shelf of Palawan, Philippines", Seismic Expression of Structural Styles: A Picture and Work Atlas. Volume 1–The Layered Earth, Volume 2–Tectonics Of Extensional Provinces, & Volume 3–Tectonics Of Compressional Provinces, A. W. Bally
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The structures illustrated herein are from the northwest Palawan shelf area of the South China Sea, about 80 km (49 mi) west of the Calamian Island Group, Philippines. This area has been part of the stable interior of the "China Plate" since the early Pliocene (Figure 1). The shelf is on the northern Palawan-Calamian Group block (NPC block), which includes the broad shoal area around these islands. The NPC block is in a foreland position with respect to thrustbelts along the western margin of the main Philippine Islands orogenic belt. In the late Miocene, the shelf was tectonically active and might have been an intraoceanic example of the type of tectonism recorded in the United States by the Laramide basement-involved structures on the foreland of the Cordilleran Thrustbelt.