Meishan
Formation at the uplift of the southern Qiongdongnan Basin commonly displays
domal reflections on the seismic section. There are two recognitions on the
genesis of the domal reflection formerly, including erosion channels and reef.
In order to identify the genesis of the domal reflections, the authors analyzed and
concluded the typical seismic reflection characteristics of channels and reef, which
indicates that the two are obviously different. Erosion channels display
typical down cutting feature and always shows obvious multiphase. By applying
seismic facies analysis, instantaneous attribute and strata slice technique, the
domal reflections were identified and characterized. Combined with the tectonic
movement background of Meishan stage within Qiongdongnan Basin, the geology
body with domal reflections is identified as reef.