Mass-transport deposits(MTD)are an important component of deepwater deposition system.They occur in many deepwater basins around the word and play an important role in petroleum exploration and production.Using deepwater 3D seismic data

we predicted mass-transport deposits in the lower of the Upper Pliocene in Rakhine Sub-Basin

offshore Myanmar.Based on the seismic sections and time slices

we recognized 3 seismic facies in the MTD:low amplitude

semitransparent and chaotic seismic reflections

imbricate variable amplitude reflections and moderate-high amplitude reflections.The first seismic facies is the typical seismic response of laminar flow in the middle MTD

the second seismic facies is the evidence of the syndepositional deformation at the toe of MTD

and the third seismic facies is the seismic response of the floating blocks in the MTD.Based on RMS

coherence slices and structure maps

we analyzed the typical geologic features on the top boundary

bottom boundary and in the interior of MTD.The bottom boundary is mainly characterized by erosion

and the top boundary reveals the laminar flow and plastic flow regimes of MTD

while the interior mainly features in deformation and compression.