Present-day stress and neotectonic provinces of the Baram Delta and deep-water fold-thrust belt

摘要

We present the first present-day stress orientation measurements across a delta and deep-water, delta toe fold-thrust belt. Stress anti neotectonic data for NW Borneo reveal three discrete neotectonic provinces: an inverted, Inner shelf province (where present-day maximum horizontal stress, an, is oriented margin-normal); an extensional, delta top province (all Is margin-parallel), and a compressional, delta toe province (all is margin-normal). We interpret the delta top and delta toe data to reflect that compression in the fold-thrust belt is coupled to delta top extension and that the inverted, Inner shelf province reflects the location of this system on an active margin.